libre
A portable C library providing SIP, RTP, STUN/TURN/ICE, HTTP, and WebSocket stacks for building real-time communication applications.
What is libre?
libre is a portable C library that provides foundational real-time communication protocols like SIP, RTP, STUN/TURN/ICE, and HTTP/WebSocket. It solves the problem of implementing standards-compliant VoIP, messaging, and multimedia streaming applications without relying on heavyweight frameworks.
C developers building embedded systems, VoIP clients, SIP servers, WebRTC infrastructure, or custom real-time communication applications that require low-level control and portability.
Developers choose libre for its comprehensive protocol support, strict RFC compliance, minimal resource footprint, and cross-platform portability across Linux, BSD, Windows, macOS, iOS, and Android.
Overview
Generic library for real-time communications with async IO support
Use Cases
Best For
- Building lightweight SIP phones or PBX systems
- Implementing custom WebRTC signaling servers and NAT traversal
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