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Synapse documentation
Guides for installing Synapse, connecting to your servers, and keeping your hosts and vault safe. This covers what the app actually does today, in version 0.2.5.
Synapse is an SSH client for Windows, built by Maku. It runs on your computer, connects straight to the servers you choose, and keeps an encrypted vault for your passwords, keys and API keys. There's no Synapse account: everything here is stored on your device unless you switch on sync yourself.
These pages are for developers and sysadmins using Synapse day to day, and they describe what the app actually does in the current release. If something changes between versions, the changelog is the place to check.
Where to start
Getting started
Install Synapse, add your first host and connect.
Security and privacy
What's encrypted, what isn't, and what Synapse never sends anywhere.
Your data
Hosts and connections
Save servers, choose how you sign in, and organise them into groups.
Vault and master password
Encrypt your passwords, keys and API keys with a master password.
Sync and the phone app
Keep hosts and the vault in step across your devices, end-to-end encrypted.
Backups and restore
Automatic local backups, encrypted full backups, and getting hosts back.
Working
Workspaces, tabs and projects
Group sessions, tile terminals, and open local project folders.
Terminal features
tmux awareness, search, history and more.
Files and transfers
Browse remote files and move files in and out of a session.
Tunnels and other connections
Forward ports over SSH and reach services on the other side.
AI
Relay assistant
An AI assistant that asks before it runs anything.
Coding agents and the Agent hub
Launch and keep track of Claude Code, Codex and other coding agents.
Harnesses
Teach coding agents your stack's conventions before they touch a file.