
Punkt
Happyfeed
Day One
recorder
Journalistic
Lifelog
Telegram Voice Journaling Bot
Journal
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.
Punkt
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Happyfeed - A simple gratitude journal for iOS
Mem0 - Your private, local memory layer for all AI tools
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
recorder - Voice journaling made easy
Memori - Persistent memory from agent trace, not just conversation