Alloy is a chat app for Matrix, the open network that lets you talk to people on any server, with end-to-end encryption. It runs on Mac, Windows, Linux and Android, it is free and open source, and it never collects any data about you: no analytics, no tracking, no ads.
Use your existing Matrix account (matrix.org, your company's server, your own) or create one on any server.
Early release. Alloy already does the everyday things well, but it is young: some features are still missing (see What's next) and the installers are not yet signed, so your computer will ask you to confirm the first start.
- Chat with anyone on Matrix, in private encrypted rooms, group rooms and direct messages. Reply (swipe a message on a phone), edit, delete, react with one tap, pin messages, forward, start threads, create polls, send voice messages, albums of photos, files and your location, and see when your messages have been read.
- Find things fast. Search your rooms from the sidebar (or with Ctrl/Cmd+K). Search inside a chat for words or for who said them, and jump straight to the message.
- Stay organised. Make your own tags (for example "Work", "Family"), colour them, put rooms under them, and filter or sort your room list by tag, unread, name or recent activity.
- Keep chats in order. Pin or archive a chat, mark it unread, mute it for an hour or a day, and unsent text waits for you as a draft.
- Make it yours. Dark theme, three message layouts (modern, chat bubbles or compact), text size, notification levels per room, and a settings page where every switch really does something. Your preferences follow you to your other devices.
- Always know what's new. Notifications on desktop and Android, unread counts that clear when you read, typing indicators, and an update notice that shows what changed before you install.
- Feels right on a phone. On Android the app turns into a proper phone app: one screen at a time, a bottom tab bar, big touch targets and sheets instead of tiny menus.
 Search inside a chat, by words or by person |
 Right-click a room: notifications, tags, settings |
 Emoji picker with search, recents and skin tones |
 Settings |
- Your messages are protected with end-to-end encryption in encrypted rooms. Only you and the people in the room can read them.
- Alloy has no telemetry. It only talks to your own Matrix server.
- Link previews are built by your server, and are off in encrypted rooms unless you turn them on.
- On desktop, your login and encryption keys are kept in the system's secure storage (Keychain, Credential Manager, Secret Service).
Download the file for your system from the Releases page.
| System | File | First start |
|---|---|---|
| macOS | Alloy_…_aarch64.dmg (Apple chips) or …_x64.dmg (Intel) |
Drag Alloy to Applications, then right-click it and choose Open. If macOS says the app is "damaged", run xattr -dr com.apple.quarantine /Applications/Alloy.app in Terminal. |
| Windows | Alloy_…_x64-setup.exe (or .msi) |
If SmartScreen warns, choose More info, then Run anyway. |
| Linux | .AppImage, .deb or .rpm |
Make the AppImage executable, or install the package. |
| Android | alloy-android.apk |
Allow installing from your browser when asked. Android 7 or newer. |
Why the warnings? Alloy is not yet signed with the paid developer certificates Apple and Microsoft ask for. That is only a matter of paperwork; the code is open and every release lists a checksum file you can verify.
Updates: on desktop, Alloy checks for updates by itself, shows you the release notes and updates in place. On Android it tells you when a new version exists and opens the download page. Because the Android file is signed with a temporary key for now, uninstall the old version before installing a new one.
Alloy is developed in the open and the plan is public: roadmap and project board. Coming up:
- Notifications on Android when the app is closed (without needing Google services)
- Signing in through your server's web login (needed for matrix.org-style single sign-on)
- Searching old messages in encrypted rooms, QR code sign-in, more languages
- Your own themes and shortcuts from simple files, then plugins and a community marketplace
- Voice and video calls, web version and multiple accounts (later)
- Latest releases and the changelog
- Recent commits and contributors
- Issues and the project board
- Found a bug or want a feature? Open an issue.
- Security problem? Please use GitHub Security Advisories instead of a public issue.
- Want to help? Read CONTRIBUTING.md. Everyone is welcome under the Code of Conduct.
Alloy is written in Rust (the Matrix part) with a Tauri 2 app shell and a Svelte 5 interface.
git clone https://github.com/centopw/alloy.git && cd alloy
just hooks # commit message checks
just synapse-up # a local test server (users alice and bob, password testpassword123!)
cd apps/alloy && pnpm install && (cd ui && pnpm install)
pnpm tauri dev # run the desktop appYou need Rust 1.90+, Node 22+ with pnpm, just and Docker (for the test server). Android builds also need the Android SDK and NDK 27.
| Everything CI runs | just ci, plus pnpm check && pnpm test && pnpm build in apps/alloy/ui |
| Try the UI without a server | pnpm dev in apps/alloy/ui (uses demo data) |
| Refresh the screenshots above | pnpm build && node scripts/readme-shots.mjs in apps/alloy/ui |
| Master plan and decisions | docs/PLAN.md, docs/decisions/ |
| How releases work | docs/RELEASING.md |
| Changelog | CHANGELOG.md |
Apache License 2.0, see LICENSE.