Collaborative platform with E2EE for personal and team use. Open-source client, audited by Cure53, guest access, self-hosting options; optional phone/email. Multi-platform (Android, iOS, desktop, web); versatile for secure group communication. (Open-source, free tier)
Decentralised messenger without user IDs or servers. Open-source, audited code, quantum-resistant E2EE, anonymous queues; no metadata leaks. Supports Android, iOS, desktop. (Open-source, free)
Decentralised messenger using onion routing for anonymous chats without phone numbers or central servers. Open-source, audited infrastructure, no metadata exposure, blockchain-based for resilience; supports groups and voice notes. Multi-platform – Android, iOS, desktop. (Open-source, free)
Hardened Signal fork with added security like database locking. Open-source, builds on Signal’s audits, PIN protection, no Google dependencies; phone number optional in some modes. Android-only – F-Droid. (Open-source, free)
