Web 4.0 architectural framework and Open Internet Stack applications for virtual worlds (RIA)

Overview

Funding for the development of a Web 4.0 architectural framework and open-source applications for virtual worlds, targeting European innovators such as SMEs, startups, academia, and Open Source communities. The grant aims to advance interoperable, trustable, and EU-compliant solutions for immersive digital environments.

Who Can Apply

Consortia of legal entities (e.g., SMEs, startups, research institutes, universities) from eligible countries. Proposals must address either the "Architectural Framework" or "Applications" area, with a focus on Open Source development and collaboration with European initiatives.

Funding Details

• Maximum grant amount: €23,500,000
• Funding rate: Not specified (standard Horizon Europe rules apply)
• Financial support to third parties:

- Architectural Framework: Up to 70% of the total budget may be allocated to third-party grants (max €300,000 per third party). - Applications: Up to 20% of the total budget may be allocated to third-party grants (max €300,000 per third party).

What Is Funded

Architectural Framework:

• Development of a human-centric Web 4.0 framework with interoperable layers (open hardware, web, AI agents, immersive applications).
• Focus on trust, privacy, portability, identity management, and EU Wallet integration.
• Energy efficiency, decentralization, and security with verifiable metrics.

Applications:

• Decentralized applications/services (e.g., messaging, videoconferencing, collaboration tools, social media) for virtual worlds.
• App stores and cross-technology virtual worlds for user/attribute management.
• Scalability, resiliency, and alignment with standards.

Cross-cutting requirements:

• Maturation of building blocks (security audits, accessibility, localization, documentation).
• Standardization strategy, community engagement, and synergies with EU initiatives (e.g., Virtual Worlds, Open Internet Stack).

Technology / Maturity Requirements

• TRL range: 7–9 (system prototype demonstration in operational environment to actual system proven in operational conditions).

Key Dates

• Open date: 2026-01-14
• Deadline: 2026-04-14

Application Process (High-Level)

• Single-stage submission via the [Funding & Tenders Portal](https://ec.europa.eu/info/funding-tenders/opportunities/portal).
• Evaluation based on award criteria (Annex D of Horizon Europe Work Programme).
• Balanced portfolio approach: at least one proposal per area ("Architectural Framework" or "Applications") will be selected if thresholds are met.

Post-Award Obligations

• Ownership/licensing: Beneficiaries must notify the granting authority before transferring ownership or granting exclusive licenses (objection possible up to 4 years post-action).
• Reporting: Standard Horizon Europe reporting requirements apply (financial, technical, dissemination).
• Third-party support: If applicable, beneficiaries must manage third-party projects, including lifecycle support and compliance with EU rules.

Geographic Scope & Language

• Eligible countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Norway, Iceland, United Kingdom, Switzerland.
• Application language: English.

Notes

• Only one proposal will be selected for the "Architectural Framework" area.
• Proposals must demonstrate experience in Open Source communities and full lifecycle expertise.
• Synergies with other EU initiatives (e.g., Virtual Worlds, 3C, Open Internet Stack) are required.