
Task Coach
Todoist
Remember The Milk
EssentialPIM
Todo.txt
Things
TickTick
Google Tasks
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.
Task Coach
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Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Mem0 - Your private, local memory layer for all AI tools
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.
Memori - Persistent memory from agent trace, not just conversation