Tiled terminals & workspaces
Drag hosts into side-by-side, stacked or grid layouts, or float them. Group sessions into workspaces.
SSH client · Windows · Version 0.1
Connect.
Command. Ship.
Synapse is a minimal SSH client for developers and engineers who run AI coding agents on their machines. Tiled terminals, an encrypted vault, files, tunnels and tmux - without the clutter.
Free during early access. No account needed.
Built for real work.
Everything runs on your computer and connects straight to your servers.
Encrypted vault
Passwords, keys and API keys are kept out of your host list and can be locked with a master password (AES-256-GCM).
Files and tunnels
Browse and edit remote files, drop files onto a terminal to upload, and forward ports over SSH.
tmux aware
Finds your tmux sessions in the background and lets you attach, switch and detach in one click.
AI with a seatbelt
Relay works with Claude, Gemini, OpenAI, Grok or a local model. Commands it suggests only run when you approve them.
Keyboard first
A command palette for everything (Ctrl K), plus local project folders with one-click AI coding CLIs.
Made for how you work now.
Most of your work happens on remote machines, and more and more of it is done alongside AI coding agents. Synapse puts both in one place, so you spend less time juggling windows and more time shipping.
Everything you connect to, in one list
Save servers once, with their credentials in the vault, group them, and connect with a click or Enter. Local project folders sit right alongside them.
Agents where your code lives
Start Claude Code, Gemini CLI or Aider in any session or project folder, and keep several running side by side in a grid.
You stay in control
Relay suggests commands and shows the real output and exit code, and nothing runs until you approve it. Your vault never leaves your device.
Built to stay out of the way
A quiet black-and-white interface, a command palette for everything and no account to create. Just open it and connect.
Download.
Version 0.1.0 · early access. Requires 64-bit Windows 10 or 11.
Windows installer (.exe)
Windows installer (.msi)
macOS
Linux
Android
- The installer isn’t code-signed yet, so Windows SmartScreen may ask you to confirm (More info → Run anyway).
SHA-256 checksums
bfdae370916422cfd05be52595ef5097a37bc8cc3ac3bf4c1b81b587d58a834e Synapse_0.1.0_x64-setup.exe
8acc01c4ad804dfba4154eb865adf1c0334068b9f80ad45187ce540644231f0d Synapse_0.1.0_x64_en-US.msi
Private by design.
No account, no tracking
The app has no analytics or telemetry, and this site uses no cookies or trackers.
Your data stays on your device
Hosts, settings and credentials are stored locally. Credentials go in the vault, not the host list.
AI only when you choose
Relay talks directly to the AI provider you set up. Your vault is never sent to it.