Telegram apps are open source and support reproducible builds. Anyone can independently verify that Telegram apps you download from App Store or Google Play were built using the exact same code that we publish.
For the moment we are focusing on open sourcing the things that allow developers to quickly build something using our API. We have published the code for our Android, iOS, web and desktop apps (Win, macOS and Linux) as well as the Telegram Database Library.
This code allows security researchers to fully evaluate our end-to-end encryption implementation. It is also possible to independently verify that Telegram apps available on Google Play and App Store are built using the same code that we publish on GitHub.
Cross-platform library for building custom Telegram apps, see
TDLib for
details.
Licensed under
Boost 1.0.
GitHub »
Official Android App, see
Google Play Market page
for full description.
Licensed under
GNU GPL v. 2 or later.
GitHub »
Download APK File »
Licensed under
GNU GPL v. 2 or later.
GitHub »
Native macOS client.
Licensed under
GNU GPL v. 2.
GitHub »
Telegram Web, Version K. Mac, Windows, Linux, Mobile.
Licensed under
GNU GPL v. 3.
GitHub »
Telegram Web, Version A. Mac, Windows, Linux, Mobile.
Licensed under
GNU GPL v. 3.
GitHub »
Legacy JavaScript client. Mac, Windows, Linux.
Licensed under
GNU GPL v. 3.
GitHub »
JavaScript client for browsers. Mac, Windows, Linux.
Licensed
under
GNU GPL v. 3.
GitHub »
Qt-based desktop client. Mac, Windows, Linux.
Licensed
under
GNU GPL v. 3.
GitHub »
Licensed under
GNU GPL v. 2 or later.
GitHub »
Alternative Telegram client for Android based on TDLib.
Licensed
under
GPL v.3.0
GitHub »
Linux Command-line interface for Telegram .
Licensed under
GNU GPL v. 2.
GitHub »
A Telegram client optimized for Windows.
Licensed under
GNU GPL v. 3 or later.
GitHub »
A PHP MTProto Telegram client.
Licensed under
GNU AGPL v. 3.
GitHub »
Telegram welcomes developers and the security research community to audit its services, code and protocol seeking vulnerabilities or security-related issues. Learn more about our Bug Bounty Program here.