Jami is a decentralized, open‑source VoIP and video‑chat platform that respects privacy. Below is a curated list of 20 free (or free‑tier) VoIP solutions you can consider as alternatives, ranging from open‑source projects to widely‑used commercial services.
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Open‑source video‑conferencing platform with end‑to‑end encryption, screen sharing, and no account required.
Free SIP‑based softphone for desktop and mobile, offering voice, video, and instant messaging with strong encryption.
Low‑latency, open‑source voice chat primarily for gamers, featuring positional audio and secure TLS encryption.
Privacy‑focused messenger with high‑quality voice and video calls, using end‑to‑end encryption.
Decentralized messenger built on the Matrix protocol, supporting encrypted voice and video calls.
Free community platform offering voice channels, video calls, and screen sharing; free tier supports unlimited servers.
Popular video‑conferencing tool with 40‑minute limit on group meetings; includes voice‑only calls and screen sharing.
Free video‑meeting service from Google, allowing up to 100 participants for 60 minutes per meeting.
Collaboration hub with chat, voice, and video calling; free plan supports unlimited chat and up to 60‑minute meetings.
Cloud‑based messenger offering encrypted voice calls and group video chats for up to 1,000 participants.
Widely used mobile app with end‑to‑end encrypted voice and video calls, supporting up to 8 participants.
Free messaging app with high‑definition voice and video calls, plus community chat features.
Cross‑platform SIP softphone offering voice and video calling, with support for multiple accounts.
Open‑source SIP and H.323 softphone for Linux and Windows, providing voice, video, and conference capabilities.
Android SIP client that turns your phone into a VoIP endpoint, supporting voice calls over any SIP provider.
Peer‑to‑peer, encrypted instant messenger with voice and video calling, requiring no central server.
Secure collaboration platform offering encrypted voice, video, and messaging for personal and business use.
Open‑source team chat that can be extended with voice and video calling via WebRTC plugins.
Scalable open‑source telephony platform that can be used to build custom VoIP services, including voice and video.
Desktop‑focused version of Linphone with advanced call management, conference bridges, and SIP account integration.