Open source

Read every line

Slate is open source under the MIT license. The app, this website and the desktop app are all here. Check what it does, or build on it.

Download source (238.1 KB)The app’s code

Connections

Device to device

Friends connect directly with WebRTC, which encrypts every connection. Free public relays only pass along an encrypted introduction.

Storage

On your devices

Messages and friends are saved in your browser’s storage. There’s no Slate database of chats.

Server

Only for supporters

The one server-side piece checks supporter status by friend code and handles Stripe checkout. See src/index.ts.

Files

.gitignore110 B
LICENSE1.1 KB
README.md2.1 KB
cloudflare.config.ts1.2 KB
desktop/main.js2.2 KB
desktop/package.json139 B
package.json323 B
public/404.html1.8 KB
public/admin/index.html8.1 KB
public/app/index.html248.1 KB
public/icon.svg264 B
public/index.html12.4 KB
public/logo.svg208 B
public/manifest.webmanifest534 B
public/robots.txt47 B
public/site.css16.8 KB
public/site.js4.8 KB
public/support/index.html4.9 KB
public/support/thanks/index.html2.3 KB
public/sw.js1.2 KB
scripts/split-download.mjs1.3 KB
src/accounts.ts8.8 KB
src/admin.ts4.3 KB
src/index.ts5.4 KB
src/secrets.d.ts479 B
src/tokens.ts12.3 KB
src/util.ts4.1 KB
tsconfig.json382 B
vite.config.ts152 B

License

MIT License Copyright (c) 2026 the Slate contributors Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.