Download

Synapse, everywhere you are.

Native builds for phones, desktops and the terminal. Every one of them speaks the same protocol, so a conversation started on a phone finishes in a shell.

Android

Mobile

Phone and tablet, with material-you theming and share-to-Synapse.

APK· Signature verifiedAPK download for Android
F-DroidF-Droid download for Android

Google PlayAndroid 8.0 or later

iOS

Mobile

iPhone and iPad, with widgets, push relay and offline inbox.

TestFlight· Weekly buildsTestFlight download for iOS

App StoreiOS 16 or later

Windows

Desktop

Native desktop client with tray quick-switch and global shortcuts.

winget· winget install Synapse.Synapsewinget download for Windows
GitHub ReleasesGitHub Releases download for Windows

Installer (.exe)Windows 10 or 11, 64-bit

Linux

Desktop

Wayland and X11, with MPRIS media keys and pipewire screen share.

.AppImage.AppImage download for Linux
Flatpak· flathub.orgFlatpak download for Linux
.rpm.rpm download for Linux

Debian package (.deb)Ubuntu 22.04+, Fedora 38+, Debian 12+

CLI

Terminal

Read, send and script conversations without leaving the shell.

Homebrew· brew install synapseHomebrew download for CLI
cargocargo download for CLI

npmNode.js 18+ on macOS, Linux or WSL

From the terminal

One command, on every platform

No store account required. Package manager builds are the same signed binaries as the direct downloads.

install

# Windows$ winget install Synapse.Synapse# macOS$ brew install synapse# Debian / Ubuntu$ sudo apt install ./synapse_latest_amd64.deb# Fedora$ sudo dnf install synapse# Any platform with Node.js 18+$ npm install -g @synapse/cli# Verify$ synapse --version

Reproducible builds

Every release is built from a tagged commit, published with its checksum and signed with the same key across all channels. Compare a binary against the source if you want to.

Read the build and self-hosting guide

Requirements

What your machine needs

Synapse is a native client on every platform — no Electron tax on mobile, and the CLI has no GUI dependency at all.

Platform	Minimum	Available as
Android	Android 8.0 or later	Google Play · APK · F-Droid
iOS	iOS 16 or later	App Store · TestFlight
Windows	Windows 10 or 11, 64-bit	Installer (.exe) · winget · GitHub Releases
Linux	Ubuntu 22.04+, Fedora 38+, Debian 12+	Debian package (.deb) · .AppImage · Flatpak · .rpm
CLI	Node.js 18+ on macOS, Linux or WSL	npm · Homebrew · cargo

Running your own node instead? A single small VPS with Docker and Postgres is enough for a few hundred active members — see the self-hosting guide.

FAQ

Questions people ask before installing

If something is missing here, the repository issues and discussions are open to anyone.

Yes. Every client is MIT licensed, and the hosted network is free to join with no seat limits and no ads. Self-hosting costs whatever your own hardware costs.

Install it once. Sync it everywhere.

MIT licensed, no ads, no tracking. Pick a platform above or read the source first — both are fine.

Download Synapse View the source

Synapse, everywhere you are.

Android

iOS

Windows

Linux

CLI

One command, on every platform

What your machine needs

Questions people ask before installing

Is Synapse free?

Which platforms are supported?

Do I have to trust someone else's server?

Are my messages encrypted?

Does it work with a bad connection?

How do updates reach me?

Can I automate it?

How do I report a bug or contribute?

Install it once. Sync it everywhere.