Top 20 Alternatives to TeamSpeak in Free VoIP Software

Free platform with persistent voice channels, low latency, screen‑share, and robust community tools.

Open‑source, low‑latency VoIP client focused on high‑quality audio and positional sound for gamers.

Classic free voice chat client offering low‑lag audio and simple server administration.

Microsoft’s free VoIP service with voice calls, group calls, and screen sharing.

Provides up to 40‑minute group voice/video meetings; popular for its ease of use.

Open‑source, browser‑based video‑conference tool that also supports high‑quality voice calls without registration.

Free, decentralized messenger with built‑in VoIP and video calls; fully open source.

Group voice chat feature inside Telegram groups and channels; completely free and mobile‑first.

Google’s browser‑based meeting platform offering voice‑only calls and up to 100 participants.

Team collaboration hub with built‑in voice calls for up to 15 participants per call.

Open‑source team chat with optional VoIP integration (WebRTC) for voice conversations.

Peer‑to‑peer, encrypted instant messaging and voice chat client; no servers required.

Free, decentralized, end‑to‑end encrypted VoIP and video calling platform.

Open‑source SIP client for voice calls on desktop and mobile; supports HD audio.

Scalable open‑source telephony platform that can be configured for group voice chat.

Widely used open‑source PBX that can host conference bridges for free voice communication.

Push‑to‑talk (PTT) app offering instant voice communication; free for personal use.

Simple, no‑login browser‑based voice (and video) rooms; free for small groups.

Browser‑based meeting rooms with voice‑only mode; free for up to 4 participants.

Free public Murmur servers let you use Mumble without self‑hosting; many community‑run servers exist.