Applicable version: November 21, 2025
QUANTSTACK, a simplified joint-stock company, with a share capital of €1.080, registered with the Créteil Trade and Companies Register under number 820 717 668, with its registered office at 16 avenue Curti 94100 SAINT-MAUR-DES-FOSSES («QUANTSTACK») has developed and publishes an innovative software platform operated as a Software as a Service (« SaaS ») named « Notebook.link ».
Notebook.link was designed to create and share interactive documents including, but not limited to, computer code, mathematical equations, data visualizations and narrative text (the « Platform ») for any user, including engineers, scientists, students and teachers in their respective fields of activity (the « User »).
Terms beginning with a capital letter in the Terms of Use have the meaning given in their context or as defined below, whether used in the singular or plural:
| Account | refers to the User’s personal space created at the time of registration, which gives them access to the Platform and its Features, as well as their resources and projects. |
| Content | refers to any element, comment, message, illustration and/or information of any kind (text, code, image, graphic, formula, data, comment) created, imported, stored, transmitted, posted and/or disseminated by the User on the Platform under their responsibility. |
| Data | refers to all data, including any Personal Data transmitted or entered directly or indirectly by the User, which enables to open an Account and use the Features. |
| Feature | refers to any or all of the features made available to Users via the Platform as described in article 5. |
| Licence | refers to the licence to use the Platform granted by QUANTSTACK to the User for the purpose of using the available Features. |
| Party(ies) | means individually and/or collectively QUANTSTACK and/or the User. |
| Personal Data | refers to personal data as defined in article 4, 1) of the General Data Protection Regulation (EU) of April 27th, 2016, namely “any information relating to an identified or identifiable natural person (…) ‘; an ’identifiable natural person‘ is a natural person who can be identified, directly or indirectly, in particular by reference to an identifier such as a name, an identification number, location data, an online identifier or to one or more factors specific to the physical, physiological, genetic, mental, economic, cultural or social identity of that natural person”. |
| Platform | means the SaaS Notebook.link » Platform described in the Preamble, made available to Users by QUANTSTACK provided and accessible only in English via the following web address : https://notebook.link including the Features. |
| QUANTSTACK | refers to the company QUANTSTACK identified in the Preamble, acting as the publisher of the Platform. |
| Terms of Use | refers to these terms of use available on the Platform. These are available and can be consulted at any time by any User, and must be read and accepted when the User registers on the Platform. |
| Third-Party Software | refers to programs executed or integrated into the Platform’s execution environment that are subject to open source or other licenses, including GPL, MIT, Apache or equivalent licenses, including programming language tools such as Python and Jupyter. |
| User | refers to any natural or legal person who meets the criteria set out in article 3, who browses the Platform and, where applicable, has an Account providing access to the Platform based on their subscription, enabling them to use all the Features for their professional, academic or personal needs. |
2.1 The purpose of the Terms of Use is to define:
The Terms of Use apply automatically to any User who browses the Platform and, where applicable, registers on the Platform depending on the subscription they opt for, has an Account and uses the Features regardless of the context of their use. If the User does not subscribe, they may have limited access to the Platform, allowing him only to consult public Content.
The User is invited to read the Terms of Use carefully before registering on the Platform and creating an Account. Use of the Platform implies the User’s full and unreserved acceptance of the Terms of Use. If the User does not accept the Terms of Use, he is invited not to register, access the Platform nor use the Features.
The Terms and Conditions prevail over any other terms and conditions or documents issued by QUANTSTACK, whether or not exchanged between the Parties, relating to the use of the Platform. Any special or exceptional terms and conditions, or additions to these Terms and Conditions, must be accepted in writing beforehand by QUANTSTACK.
2.2 QUANTSTACK reserves the right to modify all or part of the Terms of Use at any time after informing the User in advance by any written means, including by email and/or by notification via his Account. The modifications will take effect as soon as they are published online. The applicable Terms of Use will be those in force at the time of use of the Platform and, where applicable, of connection to the Account.
Users are invited to consult the Terms of Use regularly in order to be aware of any changes made to them. The new version of the Terms of Use shall be deemed to have been accepted by the User upon their subsequent use of the Platform. If the User does not accept these changes, they must cease all use of the Platform.
2.3 In the event that one of the clauses of the Terms of Use is deemed invalid due to a change in legislation, regulations or a court decision, this shall in no way affect the validity and compliance with the other clauses of the Terms of Use.
Any User may access the Platform and benefit from the Features described in the Terms of Use under the conditions defined below.
3.1 The Platform and Features are accessible to any natural person with full legal capacity to register and commit to the Terms of Use, or, failing that, the User is at least 13 years of age and has obtained the prior consent of his legal representative, whose contact details will be required to register on the Platform. In any event, the User must have reached the age of digital majority applicable in their country in order to access the Platform. Any use of or access to the Platform by a person under the age of 13 is prohibited and the Account cannot be created.
Where applicable, the Platform is also accessible to any legal entity acting through a natural person with the required power or authorization.
The User may qualify as:
3.2 Access to the Platform requires that the User has the necessary means and skills to use the Features made available. In this respect, the User acknowledges that he has the appropriate computer equipment and expressly acknowledges that use of the Platform requires internet access and that the quality of use of the Features depends on this connection, for which QUANTSTACK cannot be held liable.
The User is responsible for the proper functioning of his equipment and internet connection, as well as all costs resulting from this condition.
4.1 In order to access the Platform and use all of its Features, the User must have an Account and must first complete the mandatory registration process.
The User may only create a single Account. As an exception, the User may create a second Account if he has a legitimate reason, such as a separate professional need or a specific organization of his activities. Any creation of multiple Accounts by the same User for the purpose of circumventing the limits on the use of resources on the Platform and/or contravening the Terms of Use may result in the suspension or closure of all or part of the User’s various Accounts by QUANTSTACK, at its sole discretion.
4.2 Where the User seeks to register on the Platform, he must provide the information identified as mandatory, which is necessary for access to and use of the Platform, including in particular his surname, first name, email address and telephone number.
The User undertakes to provide accurate information. The accuracy of the information provided is of particular importance for the proper performance of the Features. The User is invited to use utmost care when creating his Account.
4.3 Registration automatically results in the opening of an Account in the User’s name, which allows him to access the Features using his login email address and the password he has chosen in accordance with the security requirements indicated on the Platform.
Once his registration has been validated on the Platform via the registration form, QUANTSTACK will send an email to the User so that he can proceed to confirm his registration.
In any event, the email address and password are strictly personal and confidential. They must not be shared or disclosed to third parties under any circumstances. QUANTSTACK cannot be held liable for fraudulent resulting from the disclosure of login details.
The registered User is solely responsible for the use of his login details, as well as for any actions and/or statements made through his Account. If the User loses or forgets his password, he can click on a link provided for this purpose to reset it by creating a new password.
Any fraudulent use of login details of which the User becomes aware must be immediately notified in writing to QUANTSTACK at the address indicated in article 12 of the Terms of Use, which cannot be held liable for such use.
4.4 Once registration is complete, the User can access all the Features made available on the Platform.
Where applicable, the User undertakes to update his personal information. In this respect, he may consult, modify and complete his personal information on his profile at any time, with the exception of his email address.
Any change of email address shall be notified to QUANTSTACK at the address mentioned in article 12 of the Terms of Use or via the dedicated section available on the Platform.
Before registering on the Platform, the User acknowledges that he can acquaint himself with all the available Features described on the Platform or through any documentation or explanatory guide provided by QUANTSTACK by any means.
Through its Platform, QUANTSTACK makes available Features relating to the creation, execution and sharing of interactive documents, including, in particular, through access to interfaces, WebAssembly execution environments, collaborative spaces, code and text visualization and editing tools.
Once logged into his Account, the User has the option, including but not limited to, to benefit from the following Features:
When using the Features, the User will be able to create any Content with which he can interact and which he can share with other Users on the Platform under the conditions set out in articles 7.1.3 and 7.1.4.
QUANTSTACK reserves the right to modify the Features or offer any other features.
QUANTSTACK shall maintain and host the Platform and the Data in accordance with its own technical and organizational procedures and at its sole discretion, using a hosting provider of its choice, provided that the security of such Data is guaranteed.
During the term of the License, QUANTSTACK reserves the right to perform all maintenance operations, which includes corrective and upgrade maintenance, on the Platform. In this respect, access to the Platform may be limited or suspended for the sole purpose of performing maintenance services.
QUANTSTACK shall use its best efforts to correct any anomalies, malfunctions or bugs detected on the Platform, as well as to make any adjustments, improvements or modifications to the Platform’s Features and/or technical installations.
QUANTSTACK undertakes to inform the User by any means it deems appropriate and will do so at the earliest opportunity, of any downtime on the Platform that will result in temporary inaccessibility of the Platform for any User.
In the event of any difficulty encountered when using the Platform, Users may contact QUANTSTACK’s support service at any time via an assistance tool accessible from the Platform or at the email address indicated in article 12.
6.1 The Terms of Use are effective as of the User’s navigation and/or registration on the Platform under the conditions set out in article 4 and will remain effective for an unlimited period until the User unsubscribes or, where applicable, until QUANTSTACK ceases operating the Platform.
6.2 The Terms of Use shall terminate upon closing of the User’s Account or at the initiative of QUANTSTACK in the event of breaches referred to in article 8 of the Terms of Use. In any event, the deletion of the User’s Account shall take effect within a maximum period of thirty (30) days from the date of the User’s request to unsubscribe or from QUANTSTACK’s initiative.
6.3 QUANTSTACK also reserves the right to delete any User Account that has been inactive for a continuous period of more than twelve (12) months after informing the User in writing and receiving no response.
6.4 Upon termination of the Terms of Use for any reason whatsoever, QUANTSTACK shall destroy or delete all User Content and Data as soon as possible. Prior to closing the Account, the User shall be responsible for recovering all of their Data and all items appearing on their Account.
At the end of the effective Account deletion period, the User will permanently lose all access to his Account, including all of his Content, as well as his projects and resources.
The User undertakes to provide QUANTSTACK with all the information necessary to open the Account and use the Features, and to update this information regularly to enable the proper execution of the Terms of Use.
The User:
The User must immediately contact QUANTSTACK using the contact details provided in article 12 of the Terms of Use or via the Platform if he notices that his Account has been used without his knowledge. He acknowledges that QUANTSTACK shall be entitled to take all appropriate measures in such cases.
The User is solely responsible for the use of his information and the security of his password, as well as for any action performed through his Account. In the event that the User discloses or uses his login details in a manner contrary to their intended use, QUANTSTACK may delete the Account without notice or compensation.
Under no circumstances shall QUANTSTACK be held liable in the event of identity theft of the User. Any access and actions performed through the User’s Account shall be presumed to have been performed by the User, insofar as QUANTSTACK has no obligation and does not have the technical means to verify the identity of persons accessing the Platform through an Account.
Any loss, misappropriation or unauthorized use of a User’s login details and their consequences are the sole responsibility of the User, who is required to notify QUANTSTACK immediately by email to the address indicated in article 12 of the Terms of Use.
The User is solely responsible for his use of the Platform and the Features, as well as for any information he shares, exchanges or transfers in this context, in particular through the publication of Content and the use of Third-Party Software.
The User undertakes to use the Features personally in a fair and professional manner with regard to QUANTSTACK and any other User, and not to allow any third party to use them in his place or on his behalf, in accordance with the laws and regulations in force and the Terms of Use.
The User undertakes to strictly comply with and take responsibility for the terms and conditions of the licenses applicable to the Third-Party Software that they install and use on the Platform, for which they remain solely responsible.
When using the Platform, the User is responsible for ensuring that all necessary precautions are taken to protect computer systems against viruses, Trojan horses and any other harmful or destructive content.
The User shall refrain from misusing the Features for purposes other than those for which they were designed including for:
The User also refrains from:
When using the Features, Users undertake to behave appropriately and respectfully in any exchanges they may have when sharing Content via the Platform.
QUANTSTACK cannot be held liable for any fact or event resulting from the interaction between Users (communication, sharing of Content, transactions), to which it is not a party.
In the event of an incident, the User may, however, inform QUANTSTACK in writing at the address indicated in article 12 of the Terms of Use. QUANTSTACK will make every effort to contact the parties involved and resolve the issue amicably, without guaranteeing a positive outcome.
The User is solely responsible for any Content of any kind that he voluntarily posts online as part of the Features, in particular for the publication of thumbnail. QUANTSTACK does not at any time verify the Content on the Platform.
When the User chooses to share his Content on the Platform in the form of a public link, he agrees that the Content posted on the Platform may be accessed, viewed and consulted by other Users of the Platform without any restriction. In this case, the User expressly agrees that, for the duration of the Terms of Use, any Content publicly distributed may be used on the various social networks used by QUANTSTACK for advertising purposes in order to promote the Platform. Failing this, where the Content is not shared, other Users and QUANTSTACK may not use the Content in any form whatsoever.
Without this list being exhaustive, the User shall refrain from publishing any Content:
The User is solely responsible for the Content he posts online and the consequences of its dissemination or execution. In this respect, he shall indemnify QUANTSTACK against any claim and/or action that may be brought against it as a result of a breach of any of his obligations. The User shall compensate QUANTSTACK for any damage suffered and reimburse any sums it may have to pay as a result.
QUANTSTACK undertakes to provide the Platform and the Features with diligence and in accordance with best practice, it being specified that it is bound by an obligation of means.
QUANTSTACK make its best efforts to provide the User with a quality experience.
For this purpose, it shall regularly perform checks to verify the proper functioning and accessibility of its Features on the Platform. It shall implement organizational and technical measures to protect the Data and Content hosted against any unauthorized access.
QUANTSTACK cannot be held liable for, in particular, computer viruses, breakdowns, data loss or errors that may occur during or following access to the Platform, nor for the lack of authorization to input Data or the use of Third-Party Software.
QUANTSTACK will make its best efforts to ensure that the Platform is available and accessible 24 hours a day, 7 days a week, except in cases of force majeure, interruptions for security reasons and periods of unavailability that are scheduled and notified to the Client, including the maintenance operations referred to in article 5.2. However, QUANTSTACK cannot be held liable for events that may prevent continuous access to the Platform’s Features, and reserves the right to render the Platform unavailable if necessary, particularly in the event of updates or technical malfunctions.
QUANTSTACK shall not be liable for any temporary difficulties or impossibility of accessing the Platform or its Features arising from:
QUANTSTACK cannot be held liable in the event of misuse of the Platform, non-performance or fault attributable to the User, including the use of Third-Party Software.
In any event, QUANTSTACK’s liability is limited solely to proven direct damage resulting from its own fault or negligence suffered by the User as a result of using the Features. The User acknowledges and accepts, for the aforementioned cases of damage, that the total amount of liability is strictly limited to the total amount paid by the User to QUANTSTACK during the twelve (12) months preceding the event giving rise to liability or the duration of the Platform’s provision if this duration is shorter, in accordance with article 1231-3 of the French Civil Code.
Furthermore, QUANTSTACK does not guarantee that the Features:
7.2.2.1 Procedure under the French Law of June 21st, 2004, pour la confiance dans l’économie numérique (LCEN) and the Digital Act Services (DSA)
QUANTSTACK acts solely as a hosting provider within the meaning of article 6-1, 2 of the Law of June 21st, 2004, on LCEN for Content voluntarily posted on the Platform. Consequently, it is not subject to a general obligation to monitor Content and cannot be held liable for the nature, accuracy or legality of Content published by the User.
QUANTSTACK does not exercise any a priori moderation of Content published by the User.
In this respect, in the event that QUANTSTACK receives a notification concerning manifestly unlawful Content, it will act promptly to remove it or make it unavailable and may take the measures described in Article 8.
Notification of any manifestly unlawful Content by a User or any third party (e.g. intellectual property infringement, criminal offences, etc.) must be made expressly in writing to QUANTSTACK’s email address indicated in article 12 of the Terms of Use.
Pursuant to article 16 of the Digital Services Act (DSA), the notification sent by the User or any other third party must include all of the following elements:
In accordance with article 6-VII of the LCEN, any User who reports Content in an abusive and/or misleading manner with a view to having it removed or its distribution stopped, while knowing that the information transmitted to QUANTSTACK is inaccurate, engages his criminal liability and is exposed to a penalty of up to one year’s imprisonment and a fine of €15.000. In this event, QUANTSTACK also reserves the right to interrupt access to the Platform and/or suspend the Account temporarily or permanently under the conditions set out in article 8.2.
In any event, upon reception of the valid notification, QUANTSTACK undertakes to act promptly to examine the relevance of the removal request. In the absence of Content deemed illegal, the Content will not be removed.
7.2.2.2 Procedure under the Digital Millenium Copyright Act (DMCA)
Subject to the applicability of the Digital Millennium Copyright Act (DMCA) for Users located in the United States, QUANTSTACK, as an online service provider, intends to voluntarily adopt the notification and removal procedure provided for in order to benefit from the protection afforded by the safe harbour under article 17 US Code §512.
In this respect, in accordance with the provisions of the DMCA, any copyright holder who considers that his work has been reproduced or distributed on the Platform in violation of his rights may send a DMCA notification to QUANTSTACK at the contact details indicated in article 12 of the Terms of Use in order to request the removal or deactivation of access to the infringing Content.
The notification shall include the following elements:
In the event that the Content is removed following a DMCA notification, the User concerned may send a counter-notification. This notification must include the following:
Under the terms of article 8 of the Terms of Use, QUANTSTACK reserves the right to suspend or delete any Account involved in repeated copyright infringements or the publication of illegal Content, in accordance with the LCEN and the DMCA.
The following constitute essential obligations on the part of the User:
In the event of a breach of any of these essential obligations, QUANTSTACK reserves the right to:
take any legal action.
These penalties are without prejudice to any damages that QUANTSTACK may claim from the User.
In the event of a breach of any obligation other than one of the essential obligations, QUANTSTACK shall send a notification to the User by any appropriate written means in order to remedy the User’s breach within a maximum period of forty-eight (48) hours.
Access to the Platform shall be terminated at the end of this period if the breach is not remedied.
The termination of access to the Platform automatically results in the deletion of the User’s Account.
With the exception of rights attached to Third-Party Software and User Content, QUANTSTACK owns all intellectual property rights to the Platform, software, infrastructure, databases, documentation and content of any kind, including in particular the French and European trademark “Notebook.link” and, more generally, any other element (text, images, visuals, graphics, logos, trademarks, domain names, etc.) that it directly exploits. They are protected by all intellectual property rights or database producer rights in force.
The Terms of Use do not confer to the User any intellectual property rights over the Platform and/or its identifying elements, which remain the sole and exclusive property of QUANTSTACK. The User is not authorised to modify the Platform, the documentation or any other element included on the Platform.
The graphic charter and content of the Platform, other than those that may be downloaded and/or provided by the User, are protected by French intellectual property legislation. QUANTSTACK is the owner of all related rights.
The User is strictly prohibited from representing, reproducing, modifying or exploiting the graphic charter and/or the contents of the Platform without the prior written authorization of QUANTSTACK.
Any disassembly, decompilation, decryption, extraction, reuse, copying and, more generally, any act of reproduction, representation, distribution and use of any element of the Platform’s graphic charter or content, in whole or in part, without QUANTSTACK’s authorization is strictly prohibited and may be subject to legal proceedings.
When using the Platform, each User is invited to create or submit Content which will remain his property.
The User may also be required to import and use Third-Party Software for which the User and/or the licensors of the Third-Party Software remain the owners of all rights and titles attached thereto. The User is informed and acknowledges that they are responsible for all conditions and restrictions provided for in relation to the use of Third-Party Software, for which QUANTSTACK cannot be held liable under any circumstances.
In this respect, each User declares and guarantees that he is the owner of the intellectual property rights, or benefits from the right to exploit the intellectual property rights attached to the User’s Content, allowing him to represent or reproduce all Content on the Platform.
In any event, QUANTSTACK cannot be held liable for any act of infringement, considering its capacity as a mere host of the Content published by Users.
For purposes of implementing the Terms of Use, the User nevertheless agrees that the Content may be reproduced free of charge on the Platform or on any other third-party site used by QUANTSTACK, in particular QUANTSTACK’s social networks. In this context, the User grants QUANTSTACK a free, non-exclusive license to reproduce any Content and, where necessary, perform minor modifications in order to promote the Platform and train artificial intelligence models, provided that the Content is made available to the public.
This license shall be valid for the entire duration of use of the Platform under the terms hereof and world wild.
This license does not confer any right to sub-license to a third party. QUANTSTACK shall not be held liable for the copying of Content by any User browsing the Platform who violates the Terms of Use.
The User indemnifies QUANTSTACK against any claims relating to the Content they publish and the licenses applied to any Third-Party Software that may be integrated.
In the course of its activities, QUANTSTACK may collect and process Personal Data concerning the User, including for purposes of providing access to the Platform. QUANTSTACK is particularly attentive to the management of data collected and processed during the use of the Platform by its Users.
In this respect, QUANTSTACK undertakes to comply with all legal and regulatory obligations incumbent upon it with regard to the protection of Personal Data, in particular Law No. 78-17 of January 6th, 1978 in its latest amended version, known as the « Loi Informatique et Libertés » and the General Data Protection Regulation (EU) of April 27th, 2016, known as the « GDPR ».
QUANTSTACK may collect and process the following Personal Data: surname, first name, e-mail address, and, where applicable, other Personal Data as indicated on the Platform, which may be optionally provided by the User.
Personal Data is processed by QUANTSTACK and its subcontractors (hosting providers) for the duration of access to the Platform for the purposes of:
With the exception of cases relating to compliance with legal or regulatory provisions applicable to QUANTSTACK, Personal Data will be retained for the entire duration of the User’s use of the Platform. Upon deletion of the Account, Personal Data will be deleted in accordance with the conditions set out in article 6.4.
In particular, in accordance with article 6-V-A of the LCEN and the applicable provisions of the French Postal and Electronic Communications Code, QUANTSTACK undertakes to hold and retain any data that may enable the identification of anyone who has contributed to the creation of Content, including information relating to the User’s civil identity, until the expiry of a period of five (5) years from the deletion of the Account.
Any User has, at any time, the right to information, access, opposition, rectification, erasure, limitation of processing, deletion and portability of information concerning them that they communicate when opening an Account, which they may exercise by writing to the contact details indicated in article 12 of the Terms of Use.
The Terms of Use are exclusively governed by and subject to French law.
Users are informed and undertake to settle any disputes arising between one or more Users. QUANTSTACK shall in no event be required to intervene in any dispute.
Users shall also settle any disputes that may arise from the use of Third-Party Software.
Any dispute relating to the validity, interpretation or execution of the Terms of Use and/or the use of the Platform between QUANTSTACK and the User shall first be subject to an attempt at amicable settlement. The User is invited to contact QUANTSTACK using the contact details provided in article 12.
Failing amicable agreement between the Parties within a reasonable period of time, the dispute shall be brought before the competent French courts in accordance with the applicable civil procedure provisions.
Any questions, comments and/or complaints may be addressed to: