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Compare scores, permissions, risks, and fit in one decision-focused table.

DimensionWitsyDesktop AI assistant and universal MCP client for many model providersCompartmentEncrypted, fully offline long-term memory for AI agents
FMRS45 / 100 · D75 / 100 · B
Reliability6 / 2012 / 20
Security and permissions8 / 2016 / 20
Maintenance11 / 2014 / 20
Documentation12 / 2018 / 20
Setup experience8 / 2015 / 20
Best for
  • Desktop users who want one interface for many model providers
  • Users who want to run Ollama models locally
  • Users needing desktop shortcuts, document retrieval, or agent features
  • Developers integrating desktop AI actions through a localhost HTTP API
  • Individuals or teams who prioritise privacy and offline operation and do not want data leaving the machine
  • Users who share memory across multiple MCP clients such as Claude Code, Claude Desktop, Hermes Agent, OpenClaw, Cursor, Codex and Gemini CLI
  • Scenarios that need encrypted storage, a hash-chained audit log and verifiable vault migration
  • Users who want low-latency recall, a bundled embedding model and no extra LLM calls inside the memory layer
Not for
  • Users seeking a standalone MCP server that provides tools to other MCP clients
  • Users seeking a confirmed client-specific MCP server configuration
  • Users who do not want to configure cloud API keys or install a local model runtime
  • Users who need cloud multi-device sync or a hosted team memory service; moving between machines means locking the vault and copying the file
  • Users who expect the server itself to run an LLM that extracts facts and decides what to remember; Compartment explicitly keeps no LLM inside and leaves that to the host model
  • Users who cannot keep a passphrase safe or who need a recovery path if it is lost, since Compartment never generates a password, seed or recovery phrase
  • Deployments that require network transports such as SSE or streamable-http; this server is stdio only and opens no ports
Required permissions
  • Cloud models, search, generation, and speech services require the relevant API keys
  • Ollama requires a local installation and model files
  • Local-file RAG and the local filesystem plugin require access to selected files
  • Prompt Anywhere, AI commands, and global shortcuts interact with other desktop applications
  • The local HTTP API listens on localhost port 8090 by default, or the next available port
  • CLI installation may require creating system-level symlinks on macOS or Linux
  • Read and write the vault file under the user's home directory, by default ~/.compartment/memory.vault, and its sibling settings file
  • Access the session directory holding the unlock credential (configurable with COMPARTMENT_SESSION_DIR), which also carries the shared embedding process's Unix socket
  • Optionally use the macOS keychain (compartment unlock --keychain is an explicit opt-in, and it survives reboots)
  • Write or merge an mcpServers entry into each MCP client's own configuration file, taking a byte-exact backup first
  • Install a PostToolUse hook for Claude Code that captures memory files the agent writes
  • Serve a read-only dashboard on 127.0.0.1 behind a one-time random URL token
Risks and side effects
  • User-provided API keys are used with configured third-party services; costs and data handling depend on those providers
  • Local files, prompts, and conversations may be sent to the selected cloud models or services
  • The HTTP API is localhost-only by default; exposing it through a reverse proxy requires user-configured authentication
  • MCP servers, Python execution, agents, and local-file features can expand the actions or data accessible to the model
  • The software is licensed under AGPL-3.0
  • A leaked passphrase means the encrypted content can be decrypted; Compartment generates no recovery phrase and cannot recover a lost passphrase
  • Enabling the memory_unlock tool places the passphrase in the model's context, which is why it is off by default
  • If a 2FA keyfile is lost, for example a USB stick, the vault cannot be opened even with the passphrase
  • `export --plaintext` writes the vault as unencrypted JSONL, so that file must be handled carefully
  • Memory content can come from untrusted sources; recall wraps memories with a notice that they are stored data and content can be marked quarantined, but the host agent must still treat memory as data to limit prompt-injection risk
  • The capture hook and client integration write into the user's own settings files, although the implementation backs up and merges rather than replacing
Supported clientsClaude Desktop, Claude Code, Hermes Agent, OpenClaw, Cursor, VS Code, Codex, Gemini CLI, Cline, Roo Code, Zed, OpenCode, LM Studio, AnythingLLM, BoltAI, Goose, Kiro
Tools014