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This round is closed. The next round and similar open calls are listed below. Synced from the EU Funding & Tenders Portal on 9 November 2026.
This call is closed. These open or upcoming calls fund the closest work.
Projects the EU funded under this call, with the organisation that led each one.
EuroQSSUniversal European Quantum Software Stack
Led by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV · Germany · 2026 · Official record ↗
Q-VERSEQuantum Virtual Ecosystem for a unified Runtime for agnostic Software Engineering
Led by Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV · Germany · 2026 · Official record ↗
Based on projects the EU funded on the same subject in this programme.
MIRAQLSMID-INFRARED QUANTUM TECHNOLOGY FOR SENSING
HORIZON-CL4-2021-DIGITAL-EMERGING-01-23 · 2022 · Official record ↗
TURINGTrustworthy Unified Robust Intelligent Generative Systems
HORIZON-CL4-2024-HUMAN-03-02 · 2025 · Official record ↗
Millenion-SGA1Modular Industrial Large-scaLE quaNtum computing with trapped IONs, phase 1
HORIZON-CL4-2022-QUANTUM-01-SGA · 2023 · Official record ↗
TruePATruly Resilient Quantum Limited Traveling Wave Parametric Amplifiers
HORIZON-CL4-2021-DIGITAL-EMERGING-02-16 · 2022 · Official record ↗
ENEXAEfficient Explainable Learning on Knowledge Graphs
HORIZON-CL4-2021-HUMAN-01-01 · 2022 · Official record ↗
EVENFLOWRobust Learning and Reasoning for Complex Event Forecasting
HORIZON-CL4-2021-HUMAN-01-01 · 2022 · Official record ↗
SERMASSocially-acceptable Extended Reality Models and Systems
HORIZON-CL4-2021-HUMAN-01-13 · 2022 · Official record ↗
QUDICEQUantum DevIces and subsystems for Communications in spacE
HORIZON-CL4-2021-SPACE-01-11 · 2023 · Official record ↗
Each one links to its EU funding record and the partners it works with: a starting list for building a consortium.
Project results are expected to contribute to the following expected outcomes:
This topic emphasizes the strategic importance of collaboration between Horizon Europe quantum computing software and hardware projects and the EuroHPC Joint Undertaking’s quantum projects, including high-performance computing-quantum middleware, integration, and Quantum Excellence Centres. Successful applicants will be required to closely collaborate and agree on the interfaces for the main layers of the software stack at the beginning of their projects. It is crucial that the projects collaborate from the outset to define open interfaces for the main layers of the software stack. These interfaces should be open for consultation and incorporate input from existing initiatives to ensure they are well aligned with current developments in the field. All interface specifications should be properly documented as they will serve as the foundational basis for the development of different layers and facilitate seamless collaboration across projects.
In line with the European Commission’s commitment to open access and reuse of software, when possible, all developments under this call should utilize open-source software platforms and be published in open repositories such as GitHub. Additionally, the use of appropriate software licenses, such as those listed as free by the Free Software Foundation and listed as open source by the Open Source Initiative, or under the European Union Public Licence (EUPL), is strongly recommended.
Moreover, the beneficiaries will have to ensure open access to other research outputs like data and workflows under the principle ‘as open as possible and as closed as necessary’ and in accordance with the FAIR (Findable, Accessible, Interoperable, Reusable) data principles.
Quantum APIs and cloud access form the transition layer between users and quantum machines in the quantum computation stack. This layer includes general-purpose quantum software development kits that are used to implement quantum algorithms for both gate-based systems, simulators and quantum annealers. This call seeks proposals that address the creation of a cohesive software stack that is agnostic to quantum hardware, facilitating the development, testing, and deployment of quantum applications across various platforms.
Proposals are encouraged to build on, or seek collaboration with, existing projects, and develop synergies and ensure complementarities with other relevant European, national, or regional initiatives and funding programmes. In particular, links are encouraged with the following, as well as with the EuroHPC Joint Undertaking:
In addition, proposals are expected to develop synergies with relevant projects funded under the Digital Europe Programme (DEP).
Proposals should also contribute to spreading excellence across Europe; for example, through the involvement of EU Widening Countries.
In this topic the integration of the gender dimension (sex and/or gender analysis) in research and innovation content is not a mandatory requirement; however, should proposers consider it to be of relevance for their proposal, they are strongly encouraged to integrate it.
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Activities are expected to start at TRL 3-4 and achieve TRL 5-6 by the end of the project – see General Annex B.
1. Admissibility Conditions: Proposal page limit and layout
are described in Annex A and Annex E of the Horizon Europe Work Programme General Annexes.
Proposal page limits and layout: described in Part B of the Application Form available in the Submission System.
2. Eligible Countries
are described in Annex B of the Work Programme General Annexes.
A number of non-EU/non-Associated Countries that are not automatically eligible for funding have made specific provisions for making funding available for their participants in Horizon Europe projects. See the information in the Horizon Europe Programme Guide.
3. Other Eligible Conditions
In order to achieve the expected outcomes, and safeguard the Union’s strategic assets, interests, autonomy, and security, it is important to avoid a situation of technological dependency on a non-EU source, in a global context that requires the EU to take action to build on its strengths, and to carefully assess and address any strategic weaknesses, vulnerabilities and high-risk dependencies which put at risk the attainment of its ambitions. For this reason, participation is limited to legal entities established in Member States, Iceland and Norway and the following additional associated countries: Canada, Israel, the Republic of Korea, New Zealand, Switzerland, and the United Kingdom.
For the duly justified and exceptional reasons listed in the paragraph above, in order to guarantee the protection of the strategic interests of the Union and its Member States, entities established in an eligible country listed above, but which are directly or indirectly controlled by a non-eligible country or by a non-eligible country entity, may not participate in the action unless it can be demonstrated, by means of guarantees positively assessed by their eligible country of establishment, that their participation to the action would not negatively impact the Union’s strategic assets, interests, autonomy, or security. Entities assessed as high-risk suppliers of mobile network communication equipment within the meaning of ‘restrictions for the protection of European communication networks’ (or entities fully or partially owned or controlled by a high-risk supplier) cannot submit guarantees.[[The guarantees shall in particular substantiate that, for the purpose of the action, measures are in place to ensure that: a) control over the applicant legal entity is not exercised in a manner that retrains or restricts its ability to carry out the action and to deliver results, that imposes restrictions concerning its infrastructure, facilities, assets, resources, intellectual property or know-how needed for the purpose of the action, or that undermines its capabilities and standards necessary to carry out the action; b) access by a non-eligible country or by a non-eligible country entity to sensitive information relating to the action is prevented; and the employees or other persons involved in the action have a national security clearance issued by an eligible country, where appropriate; c) ownership of the intellectual property arising from, and the results of, the action remain within the recipient during and after completion of the action, are not subject to control or restrictions by non-eligible countries or non-eligible country entity, and are not exported outside the eligible countries, nor is access to them from outside the eligible countries granted, without the approval of the eligible country in which the legal entity is established.
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Described in Annex B of the Work Programme General Annexes.
4. Financial and operational capacity and exclusion
are described in Annex C of the Work Programme General Annexes.
5a. Evaluation and award: Award criteria, scoring and thresholds
are described in Annex D of the Work Programme General Annexes.
5b. Evaluation and award: Submission and evaluation processes
are described in Annex F of the Work Programme General Annexes and the Online Manual.
5c. Evaluation and award: Indicative timeline for evaluation and grant agreement
is described in Annex F of the Work Programme General Annexes.
6. Legal and financial set-up of the grants
is described in Annex G of the Work Programme General Annexes.
are described in the specific topic of the Work Programme.
Application and evaluation forms and model grant agreement (MGA):
Application form templates — the application form specific to this call is available in the Submission System
Standard application form (HE RIA, IA)
Evaluation form templates — will be used with the necessary adaptations
Standard evaluation form (HE RIA, IA) 
Guidance
HE Programme Guide 
Model Grant Agreements (MGA)
HE MGA 
Call-specific instructions 
Ownership Control Declaration
Additional documents:
HE Main Work Programme 2025 – 1. General Introduction
HE Main Work Programme 2025 – 7. Digital, Industry and Space
HE Main Work Programme 2025 – 14. General Annexes
HE Programme Guide
HE Framework Programme 2021/695
HE Specific Programme Decision 2021/764
EU Financial Regulation 2024/2509
Rules for Legal Entity Validation, LEAR Appointment and Financial Capacity Assessment 
EU Grants AGA — Annotated Model Grant Agreement 
Funding & Tenders Portal Online Manual 
Funding & Tenders Portal Terms and Conditions 
Funding & Tenders Portal Privacy Statement
Confirm the current call documents and submission conditions with the funding authority.
View on EU portal ↗Source: EU Funding & Tenders Portal · synced 2026-11-09
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