Project Tessera

Project Tessera is an open-source, local-first memory and knowledge management layer for AI tools. It captures and indexes your conversations and documents across platforms like Claude, ChatGPT, Gemini, and Copilot, unifying everything into a single encrypted, on-device knowledge base. Tessera enables powerful cross-tool-memory, search (semantic, keyword, graph), knowledge graph construction, user profiling, project spaces, provenance tracking, and session priming, all while keeping your data private and off the cloud. It is ideal for users who want persistent AI memory, privacy, and efficiency when working with multiple AI assistants and document formats.