Knotes
Readwise
Klib
Newsletters to Kindle
FSNotes
Kindle2Notion
Wellput
Kindle Highlight Export by Glasp
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.
Knotes
ChainMemoryReadwise - Effortlessly rediscover and organize your Kindle highlights
Mem0 - Your private, local memory layer for all AI tools
Klib - Kindle & iBooks Highlights Manager
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
Newsletters to Kindle - Read your newsletters on your Kindle
Memori - Persistent memory from agent trace, not just conversation