ChainMemory
Mem0
Agentmemory
Memori
Tempreon
cognee
TheSecondBrain.dev
Suprflo
Jetico BCTextEncoder
GNUPGK
TheLetterEncrypter
SecretPad
GizmoMarks
CTI Text Encryption
Crypditor
PlainText Crypto
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
Jetico BCTextEncoderMem0 - Your private, local memory layer for all AI tools
GNUPGK - A GnuPG Frontend GUI made in C#.
Agentmemory - Persistent memory for Claude Code, Codex & coding agents
TheLetterEncrypter - TheLetterEncrypter is a small (14KB download) AES-based text-encryption program.
Memori - Persistent memory from agent trace, not just conversation
SecretPad - SecretPad is software that encrypts your plain text into a form that cannot be understood by anyone.