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Open Source AI Memory & Context using CSS

A curated collection of the best open source persistent memory and context layers for AI agents and applications. using CSS.

Mem0

AI
Persistent memory layer for AI agents and apps

  • Stars

    67,500

  • Last commit

    12 hours ago

  • License

    Apache-2.0
Adds persistent, searchable memory to AI agents and apps, so they remember user preferences and past interactions across sessions without pipeline changes.

Open Source Alternative to:

Supermemory

Letta

AI
Stateful AI agents that remember, learn, and improve over time

  • Stars

    Stars growing over the last 30 days3,660

  • Last commit

    7 hours ago

  • License

    Apache-2.0
Build persistent AI agents with continuous memory, scheduled tasks, and multi-channel communication via Slack, Discord, and Telegram, using your own API keys.

Open Source Alternative to:

Supermemory
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