Expected Outcome:
Common expected outcome
Stimulate the emergence at European and global scale of Web 4.0 (such as standards, protocols, components and a framework for their interaction) and virtual worlds solutions.
Expected outcome for the “Architectural Framework” area
- An emerging Web 4.0 architectural framework made of cross-platforms, interoperable, trustable, safe and secure building blocks that rely on Open Source software
- A structured and agile eco-system of talented contributors driving the creation and evolution of commons based on Open Source software, open standards and open hardware and designs.
Expected outcome for the “Applications” area
- Open source and made in Europe, supporting trust and sovereignty, and delivering credible alternative choices for citizens, governments and companies including start-ups and SMEs.
- Interoperable, standards-based, decentralised solutions exploiting extended reality technologies.
- Compliant-by-design with EU rules and regulations. Paced for easy deployment by the rich European eco-systems of providers, integrators and verticals.
For both areas the outcome will bring synergies with actions under Virtual worlds, Open Internet Stack, 3C, as well as with other like-minded actions in Europe e.g. at Member States level and outside
Scope:
Proposals should address one of the following areas and should clearly identify the area addressed.
1/ “Architectural Framework” area
Develop a human-centric Web 4.0 architectural framework encompassing interoperable layers from open hardware, web, AI agents, up to immersive and decentralised applications, utilizing cross-platform digital commons developed by European innovators (SMEs, start-ups, academia). Proposals should demonstrate immersive multi-modal user interaction and should enhance trust, privacy, portability, and advanced identity management, facilitating deployment of the EU Wallet while optimizing the balance between decentralization, security, and energy efficiency with verifiable metrics.
2/ “Applications” area
Proposals will cover the one or more of the following technologies:
- Alternative decentralised applications and services such as synchronous and asynchronous messaging, videoconferencing, collaboration and groupware or social media that can be exploited through Virtual Worlds technologies, including immersion and interaction.
- App-stores (incl. web-based) adapted for Virtual Worlds
- Shared, robust and trustworthy cross-technology Virtual Worlds for user and attribute management
Proposals will have to demonstrate (1) technical maturity in terms of scalability, resiliency, alignment with standards (2) critical mass of communities actively supporting the development (3) evidence of interest from users and deployers of the solutions.
Cross-cutting requirements for both areas:
Applicants should define the mechanisms for maturing building blocks e.g. security and accessibility audits, packaging of the software for easy deployment, localisation of the software in EU languages, documentation of best practices and advising on licensing.
Applicants should detail the path to growth for building blocks e.g. by defining a clear standardisation strategy, actively animating communities, creating momentum among like-minded efforts, defining how projects will gain critical mass and what services will be provided for reaching such stage, and providing a coherent picture of the portfolio for adopters
Applicants should create the conditions for successful collaboration and synergies with other European initiatives such as the Virtual Worlds/Web 4.0, 3C and Open Internet Stack initiatives as well as with like-minded funding efforts at national, European levels and beyond Europe such as Digital Commons initiatives.
Applicants should demonstrate their experience and understanding of Open Source communities and their expertise covering the full Open Source life cycle through proven track record including years of experience.
Beneficiaries that intend to transfer ownership or grant an exclusive licence must formally notify the granting authority (i.e. DG-CNECT and HaDEA) before the intended transfer or licensing takes place and the granting authority may up to four years after the end of the action object to a transfer of ownership or the exclusive licensing of results.
Financial support to third parties
If applicants opt for financial support to third parties, then they should target calls towards European Open Source communities – SMEs, research institutes and individual researchers and developers – with solid experience with development of solutions in line with EU rules and values. Applicants should provide the programme logic for the third-party projects, managing the projects lifecycle, and provide the necessary technical and non-technical support: these tasks cannot be implemented using the budget earmarked for the financial support to third parties.
News flashes
2026-10-09
EVALUATION RESULTS
Call HORIZON-CL4-2026-04
Published: 12.12.2025
Deadline: 15.04.2026
Available budget: EUR 221,800,000.00
The results of the evaluation for each topic are as follows:
HORIZON-CL4-2026-04
DATA-02
DATA-03
DATA-06
EMERGING-01
EMERGING-08
EMERGING-09
Number of proposals submitted (including proposals transferred from or to other calls)
31
6
63
4
8
41
Number of inadmissible proposals
0
0
2
1
0
0
Number of ineligible proposals
1
2
3
1
3
2
Number of above-threshold proposals
24
2
39
2
3
30
Total budget requested for above-threshold proposals
222,798,016.25 €
7,993,073.04 €
538,094,514.11 €
33,999,387.25 €
53,990,531.25 €
173,178,667.04 €
Number of proposals retained for funding
3
1
3
1
1
1
Number of proposals in the reserve list
1
1
1
1
1
1
Funding threshold [1]
14.00
14.00
14.50
12.50
14.50
14.50
Number of proposals with scores lower or equal to 15 and higher or equal to 14
3
1
8
0
1
2
Number of proposals with scores lower than 14 and higher or equal to 13
7
0
5
0
1
3
Number of proposals with scores lower than 13 and higher or equal to 10
14
1
26
2
1
25
HORIZON-CL4-2026-04
EMERGING -14
EMERGING-15
EMERGING-17
EMERGING-19
HUMAN-01
HUMAN-02
Number of proposals submitted (including proposals transferred from or to other calls)
1
2
1
18
105
32
Number of inadmissible proposals
0
1
0
0
1
0
Number of ineligible proposals
0
0
0
2
0
3
Number of above-threshold proposals
1
1
1
12
81
19
Total budget requested for above-threshold proposals
3,043,282.50 €
999,976.25 €
1,163,306.74 €
179,979,870.75 €
387,981,592.72 €
126,943,323.25 €
Number of proposals retained for funding
1
1
1
3
6
2
Number of proposals in the reserve list
0
0
0
3
2
1
Funding threshold [1]
11.50
13.50
12.50
13.50
14.50
13.50
Number of proposals with scores lower or equal to 15 and higher or equal to 14
0
0
0
2
12
1
Number of proposals with scores lower than 14 and higher or equal to 13
0
1
0
1
20
3
Number of proposals with scores lower than 13 and higher or equal to 10
1
0
1
9
49
15
[1] Proposals with the same score were ranked according to the priority order procedure set out in the call conditions (for HE, in the General Annexes to the Work Programme or specific arrangements in the specific call/topic conditions). For HE, to determine the ranking for ‘Innovation actions’, the score for ‘Impact’ is given a weight of 1.5.
Summary of observer report:
The two independent observers were tasked by the EC services to follow the evaluation processes of call HORIZON-CL4-2026-04 with respect to their conduct, transparency, and fairness, and to provide recommendations for process improvement. This Observers’ Report consolidates their observations and recommendations. Based on the observed Consensus Meetings and Panel Meetings, the evaluation procedures for all topics were carried with transparency, efficiency, fairness, consistency, impartiality with homogenous criteria in compliance with the applicable evaluation rules for each stage of the selection exercise (Individual Evaluation, Consensus Meetings, Quality Check, Cross-reading, Panel Meeting and Final Ranking for funding). The evaluation processes were carried out in full accordance with the Horizon Europe evaluation rules and the provided Digital Europe Programme evaluation briefings. The Call with 12 topics received 312 proposals, where 5 were inadmissible, 17 ineligible and 0 withdrawn. The number of proposals per topic varied from 1 to 105. Proposals were evaluated by 218 experts, with a satisfactory gender balance (44,5% female; 55,5% male). The majority of experts were from EU Member States and a small number from associated countries. Sixteen invited experts declined due to conflict of interest or other reasons. In conclusion, the overall assessment of all submitted proposals were executed in full transparency and compliance with the Horizon Europe applicable rules in a fair and impartial manner to select the best proposals for funding according to the topics’ specifications and expected results. The observers’ conclusion is that the scientific evaluations have been carried out in a just, transparent, and unbiased manner based on the Horizon Europe evaluation rules.
We recently informed the applicants about the evaluation results for their proposals.
For questions, please contact the Research Enquiry Service.
2026-10-09
PROPOSAL NUMBERS
Call HORIZON-CL4-2026-04 has closed on 15.04.2026
312 proposals have been submitted.
The breakdown per topic is:
HORIZON-CL4-2026-04-DATA-02
31
HORIZON-CL4-2026-04-DATA-03
6
HORIZON-CL4-2026-04-DATA-06
63
HORIZON-CL4-2026-04-DIGITAL-EMERGING-14
1
HORIZON-CL4-2026-04-DIGITAL-EMERGING-15
2
HORIZON-CL4-2026-04-DIGITAL-EMERGING-17
1
HORIZON-CL4-2026-04-HUMAN-01
105
HORIZON-CL4-2026-04-HUMAN-02
32
HORIZON-CL4-2026-04-DIGITAL-EMERGING-01
4
HORIZON-CL4-2026-04-DIGITAL-EMERGING-08
8
HORIZON-CL4-2026-04-DIGITAL-EMERGING-09
41
HORIZON-CL4-2026-04-DIGITAL-EMERGING-19
18
Evaluation results are expected to be communicated in July 2026.
2026-10-09
The submission session is now available for: HORIZON-CL4-2026-04-DIGITAL-EMERGING-18, HORIZON-CL4-2026-04-DIGITAL-EMERGING-17, HORIZON-CL4-2026-04-HUMAN-02, HORIZON-CL4-2026-04-DIGITAL-EMERGING-01, HORIZON-CL4-2026-04-DATA-03, HORIZON-CL4-2026-04-DIGITAL-EMERGING-08, HORIZON-CL4-2026-04-DATA-06, HORIZON-CL4-2026-04-DATA-02, HORIZON-CL4-2026-04-DIGITAL-EMERGING-12, HORIZON-CL4-2026-04-DIGITAL-EMERGING-09, HORIZON-CL4-2026-04-DIGITAL-EMERGING-11, HORIZON-CL4-2026-04-DIGITAL-EMERGING-19, HORIZON-CL4-2026-04-HUMAN-01, HORIZON-CL4-2026-04-DIGITAL-EMERGING-14, HORIZON-CL4-2026-04-DIGITAL-EMERGING-15
