ChainMemory
Tempreon
TheSecondBrain.dev
Memori
Agentmemory
OpenMemory MCP
Pinecone
Memo.ai
study-lingo.com
Anki
Space Repeat
FlipToMind
Quizlet
Recall Cards
Drops
Flashcard Exchange
ChainMemory gives your AI agents persistent memory that belongs to YOU โ 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 โ 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.
ChainMemory
study-lingo.comTempreon - A personal memory layer for your AI tools, connected over MCP.
Anki - Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.
TheSecondBrain.dev - One Brain. Everywhere you work. One memory for Claude, ChatGPT, Cursor and every AI tool you use. Runs in your own Cloudflare account. Open source.
Space Repeat - Train your memory with a science backed spaced repetition flashcard app built around active recall.
Memori - Persistent memory from agent trace, not just conversation
FlipToMind - Space repetition app to help you remember everything