1.1 These General Terms and Conditions (GTC) apply to the business relationship between the
TWENTY |20 GmbH & Co. KG
Hausinger Straße 6
40764 Langenfeld
Germany
registered in the commercial register of the Düsseldorf local court under HRA 23675
(hereinafter "twenty20" or "we")
and
the customer company as contractual partner
(hereinafter "customer" or "you")
for the (time-limited) fee-based usage permission (license) of software extensions for JetBrains YouTrack via our online store at twenty20
1.2 These GTC apply exclusively to transactions with entrepreneurs (B2B), unless otherwise expressly regulated and confirmed by twenty20 in individual cases. In this case, any deviating regulation must be made in writing.
1.3 Deviating, conflicting or supplementary general terms and conditions of the customer shall not become part of the contract unless twenty20 has expressly agreed to their validity in writing.
2.1 twenty20 develops and distributes software extensions (plugins/apps) for the JetBrains program YouTrack. We currently offer the following paid extensions after a trial phase:
2.2 The software is provided as a license for use. The customer does not acquire any ownership rights to the software, but receives a simple (non-exclusive) and non-transferable right of use for a limited period of time in accordance with the type of license selected and granted in the store. Detailed rights of use under point 6.
2.3 The exact description of the functions, system requirements and supported YouTrack versions can be found on the respective product page in the JetBrains Marketplace or on our website.
2.4 All apps are continuously tested against the latest YouTrack main version. Compatibility with older or future versions cannot be guaranteed.
3.1 Twenty20 its paid YouTrack apps through the YouTrack Marketplace for a free trial period. This trial period generally ends after 30 days. Free use beyond the trial period is not permitted, subject to the free usage model for small teams as described in Section 3.3.
3.2 The customer receives a notification within the app about the end of the trial phase with a reference to the possibility of placing a chargeable order via the twenty20 store. This chargeable order is not placed automatically, but is linked to the active conclusion of a contract.
3.3 Current license models:
3.4 The licenses can be purchased in packages according to the number of active YouTrack users in your instance. The store contains a corresponding selection option. The selected number becomes part of the license agreement. The number of licensed users may not be exceeded.
3.5 The license is limited in time and is clearly defined at the time of purchase. The period of use is clearly and comprehensibly defined within the invoice, e.g. 365 days from activation of the license key.
3.6 The single license starts with the activation of the license key and ends automatically on the day of the period specified when the contract is concluded.
3.7 All prices for future fee-based versions are net prices plus the respective statutory value added tax, if applicable.
3.8 We reserve the right to change prices for new orders (including new orders as a continuation of a previous license). Existing contracts are not affected within the agreed period of use.
4.1 The presentation of the products in our online store and in the JetBrains Marketplace does not constitute a legally binding offer, but a non-binding invitation to order (invitatio ad offerendum).
4.2 For the trial phase: The contract for 30 days of free use is concluded by installing the respective app from the JetBrains Marketplace in your YouTrack instance. This ends automatically at the end of the 30 days without any special termination by either party.
4.3 For the chargeable order: The customer submits a binding offer to conclude a license agreement for the selected app by clicking on the "Order with costs" button or a similarly clearly marked button. The contract is concluded by confirmation by e-mail from twenty20 and/or by the provision of the license key.
4.4 The contract of use ends automatically without special termination by either party at the end of the period of use agreed in the contract.
4.5 The text of the contract is stored by twenty20 and can be requested at any time. These GTC can be accessed at any time on our website at twenty20.
5.1 The software is installed via the JetBrains Marketplace(https://plugins.jetbrains.com/).
5.2 Basic requirements for installation:
5.3 The customer is responsible for providing a compatible YouTrack environment. We only guarantee compatibility with the YouTrack versions specified in the product description.
5.4 During installation, the base URL of the customer's YouTrack instance is stored in the JetBrains Marketplace. This information is used for license verification and support purposes.
6.1 The customer receives a simple, non-transferable and non-sublicensable right to use the software in accordance with the purchased license.
6.2 Use is limited to the number of users specified in the license and the specific YouTrack instance. Exceeding the licensed number of users or use in multiple instances is not permitted.
6.3 Permitted uses:
6.4 Prohibited uses:
6.5 All rights not expressly granted shall remain with twenty20.
7.1 Data processing in YouTrack:
The software processes and stores data exclusively in the YouTrack instance provided by the customer. No external data transfer takes place.
7.2 Responsibilities:
7.3 Data protection compliance:
Our apps are developed in compliance with the GDPR and only process the data necessary for their functionality.
7.4 Further information on data protection can be found in our privacy policy at twenty20
8.1 Payment shall be made in accordance with the specified payment terms.
8.2 Available payment methods:
8.3 In the event of late payment, twenty20 shall be entitled to charge interest on arrears at a rate of 9 percentage points above the prime rate.
8.4 Offsetting against counterclaims of the customer is only permitted if these are undisputed or have been legally established.
9.1 Support services:
9.2 Updates and patches:
twenty20 provides updates and patches for the Software to the extent that this is technically possible and economically reasonable. Updates are made via the JetBrains Marketplace.
9.3 Limits of Support:
There is no entitlement to specific updates, new features, or unlimited support. Support is provided to the extent that it is economically reasonable and only for the duration of the contractual relationship. twenty20 does not affect twenty20 obligation to maintain the software in a condition suitable for contractual use during the agreed term and to remedy reported material defects within the limits of what is economically reasonable.
9.4 Update notifications:
Updates are displayed in the JetBrains Marketplace. YouTrack checks weekly for available updates. Manual checks are possible at any time.
10.1 Scope of warranty:
Twenty20 warrants that the software has the functions specified in the product description and is free from defects in title.
10.2 Notification of defects:
Defects must be reported to us immediately in writing (e-mail is sufficient). In the event of justified complaints, we shall, at our discretion, remedy the defect or supply a replacement.
10.3 Subsequent performance:
If the subsequent performance has finally failed, the customer may, at his discretion, demand a reduction in price or withdraw from the contract.
10.4 Warranty periods:
10.5 Exclusions:
The warranty applies exclusively to faulty performance for which twenty20 is responsible. It does not cover damage caused by improper use, changes to the YouTrack environment or interference by third parties.
11.1 Unlimited liability:
We are liable without limitation for damages resulting from injury to life, body or health that are based on an intentional or negligent breach of duty, as well as for other damages that are based on an intentional or grossly negligent breach of duty.
11.2 Limited liability:
We shall also be liable for the breach of essential contractual obligations in the event of simple negligence, but limited to the foreseeable damage typical of the contract.
11.3 Disclaimer:
In all other respects, our liability is excluded, unless liability applies under Sections 11.1 and 11.2, in particular for:
11.4 Limitation of Liability for Free Apps:
For free apps, liability is limited to cases of willful misconduct and gross negligence. Liability for damages resulting from injury to life, limb, or health, as well as liability under mandatory statutory provisions, remains unaffected.
11.5 The above limitations of liability shall also apply in favor of our vicarious agents and legal representatives.
12.1 Free licenses:
In the case of free licenses, the contract can be terminated by either party at any time without notice by uninstalling the app.
12.2 Licenses subject to a charge:
The term and termination depend on the respective license terms, which are displayed during the purchase process.
12.3 Extraordinary termination:
The right to extraordinary termination for good cause remains unaffected. Important reasons are in particular
12.4 Consequences of termination:
The right of use shall expire upon termination of the contract. The customer must uninstall the software and delete all copies.
13.1 Additional Limitations of Liability for Businesses:
The provisions of Section 11 apply additionally to liability toward businesses. Compensation for indirect damages, consequential damages, and lost profits is owed only in accordance with Section 11.
13.2 Shortened limitation periods:
For entrepreneurs, warranty claims expire within one year of delivery.
13.3 Offsetting and retention:
entrepreneurs may only offset or assert rights of retention with undisputed or legally established claims.
14.1 Applicable law:
German law shall apply to all legal relationships between us and the customer to the exclusion of the UN Convention on Contracts for the International Sale of Goods (CISG).
14.2 Place of jurisdiction for entrepreneurs:
If the customer is a merchant, a legal entity under public law or a special fund under public law, the exclusive place of jurisdiction for all disputes shall be Langenfeld, Germany. However, we are also entitled to sue the customer at his place of business.
14.3 Place of jurisdiction for consumers:
The statutory place of jurisdiction applies to consumers. Mandatory consumer protection provisions of the country in which the consumer has his habitual residence shall remain unaffected.
15.1 Notice pursuant to Section 36 of the German Consumer Dispute Resolution Act (VSBG): We are neither obligated nor willing to participate in dispute resolution proceedings before a consumer arbitration board. The former EU platform for online dispute resolution was discontinued on July 20, 2025.
15.2 You can find our e-mail address in the legal notice above.
15.3 As a pure B2B provider, we are not obliged and generally not willing to participate in dispute resolution proceedings before a consumer arbitration board.
16.1 The provision of the software (including its provision for the purpose of a free trial period) and the performance of this Agreement are subject to the condition that there are no obstacles to such performance arising from national or international foreign trade regulations, in particular export control regulations, embargoes, or other sanctions (including those of the European Union, the Federal Republic of Germany, and the United States of America, such as the OFAC lists or the U.S. Entity List).
16.2 The customer is expressly prohibited from installing, testing, or using the software if he:
16.3 The Customer is obligated to provide twenty20 request, with all information and documents necessary to verify compliance with export control and sanctions regulations (end-use certificate).
16.4 If the Customer breaches any of the obligations or representations set forth in this Section 16, such breach shall constitute a material breach of the Terms of Use. In such a case, Twenty20 entitled, provided the breach is attributable to the Customer, to terminate the Agreement (including any agreement regarding a trial phase) with immediate effect without notice, to suspend all services, and to block the license key without compensation. The Customer shall indemnify twenty20 all damages and liability claims incurred by twenty20 a breach of these obligations by the Customer.
If any provision of these Terms and Conditions is or becomes invalid or unenforceable, this shall not affect the validity of the remaining provisions. The invalid or unenforceable provision shall be replaced by the applicable statutory provisions (Section 306(2) of the German Civil Code (BGB)).
18.1 We reserve the right to amend or supplement these GTC for future transactions.
19.1 Individual contractual agreements shall always take precedence and are valid even without compliance with any specific form (Section 305b of the German Civil Code). In all other respects, ancillary agreements shall be documented in writing.
19.2 Any amendments or additions to these Terms and Conditions must be made in writing (Section 126b of the German Civil Code). The primacy of individual agreements (Section 305b of the German Civil Code) remains unaffected.
19.3 If the customer changes their address, they are required to notify us of the new address immediately. If they fail to do so, any notices we have properly sent to the last address provided shall be deemed to have been received.
As of May 22, 2026
twenty20 GmbH & Co. KG
Hausinger Straße 6
40764 Langenfeld
+49 (0) 2173 167 00 50