Admidio
TidyHQ
Google Groups
Membee
Mighty Networks
Bigtent
Nabble
Galette
ChainMemory
Mem0
Memori
Agentmemory
Tempreon
cognee
TheSecondBrain.dev
Suprflo
ChainMemory gives your AI agents persistent memory that belongs to YOU — not to a single vendor.
Save a memory in ChatGPT, recall it in Claude or Gemini. Available via Chrome extension, MCP server (npm), or REST API. Every memory gets a cryptographic fingerprint and project states are anchored with Merkle proofs, so anyone can independently verify integrity — no trust required.
Memories consolidate into a structured Project Brain (decisions, milestones, risks) instead of a pile of raw notes. Multi-agent native: Claude, Cursor and GPT share one consolidated state. Free tier available.
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TidyHQ - Organization management tool to support membership, subscriptions, event planning, and outreach.
Mem0 - Your private, local memory layer for all AI tools
Google Groups - Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.
Memori - Persistent memory from agent trace, not just conversation
Membee - Membee is web-based membership management software.
Agentmemory - Persistent memory for Claude Code, Codex & coding agents