Thought Train
Whimsical
Gone
Jot
Paper
Taskful
X (Twitter)
Tyke
ChainMemory
Mem0
Agentmemory
Memori
Tempreon
cognee
TheSecondBrain.dev
Suprflo
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.
Thought Train
ChainMemoryIt's recommended for professionals, students, and anyone who needs a quick-access tool to jot down ideas throughout the day, or for those who find bulky task management applications overwhelming and prefer a more stripped-down approach.
Whimsical - The visual workspace for teams.
Mem0 - Your private, local memory layer for all AI tools
Gone - An ephemeral to-do list
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
Jot - The no-fuss way to take notes
Memori - Persistent memory from agent trace, not just conversation