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Grant
Fund: NGI0 Commons Fund
Start: 2026-06
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NGI0 Commons Fund

Sylk Persistent Group Chat

Encrypted enterprise-ready persistent group chat over SIP

Sylk is a feature-rich standards based communication suite and conferencing server. Originating from the SIP world and building on a mature protocol stack, it provides a FOSS softphone alternative to proprietary platforms. Currently, Sylk supports end-to-end encrypted one-to-one messaging and multiparty audio / video calls. This project will add fully encrypted group chat capabilities, bringing end-to-end encryption to multiparty conversations. This development would help position it as a privacy-first alternative to mainstream platforms for individuals and businesses, while maintaining its core strength of being a self hostable, standards-based communication platform.

Run by AG Projects B.V.

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This project was funded through the NGI0 Commons Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 101135429. Additional funding is made available by the Swiss State Secretariat for Education, Research and Innovation (SERI).