Top Open Source AI Memory & Context Tools in 2026
A curated collection of the 9 best free and open-source AI Memory & Context tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
CloudQuery
Unified cloud ops control plane for governance and automation
Stars6,497Last commit10d agoLicenseMPL-2.0
Cerbos
Fine-grained authorization for apps and AI agents
Stars4,558Last commit10d agoLicenseApache-2.0screenpipe
Local AI agent memory for your computer
Stars21,252Last commit11d agoLicenseOpen Source
OneUptime
Open-source observability & incident management
Stars7,523Last commit10d agoLicenseApache-2.0
Mem0
AI memory layer for persistent agent context
Stars64,166Last commit10d agoLicenseApache-2.0
Malak
AI-powered developer platform
Stars—Last commitRecentlyLicenseOpen Source
Letta
AI agents that learn continuously and improve over time
Stars24,463Last commit14d agoLicenseApache-2.0GitLab
DevSecOps platform with AI-powered automation
Stars24,540Last commit10d agoLicenseOpen Source
Bytebase
Unified database governance platform for teams and AI agents
Stars14,422Last commit10d agoLicenseOpen Source
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Showing 9 of 9 open-source tools