jitsi/libjitsi

libjitsi is a mature, infrastructure-grade component of the Jitsi ecosystem. With over 13 years of history, it represents a massive accumulation of domain expertise in real-time communication (RTC) standards that are notoriously difficult to implement correctly, such as ICE for NAT traversal and SRTP/DTLS for security. Its defensibility score of 7 is driven by this technical complexity and its role as a critical dependency for Jitsi Videobridge and Jitsi Meet, which are the de facto open-source standards for self-hosted video conferencing. While its velocity is currently low (0.0/hr), this reflects the project's maturity rather than obsolescence; most core RTC logic in the Java ecosystem has stabilized. It faces little risk from frontier labs (OpenAI/Google), as they are focused on higher-level AI interaction rather than low-level Java media stacks. The primary competition comes from native WebRTC libraries (C++) and newer Go-based stacks like Pion, but the switching cost for existing Java-based telecommunications infrastructure remains high. Platform risk is low because this project serves the 'sovereign/self-hosted' market which specifically avoids Big Tech platforms like AWS Chime or Azure Communication Services.