This is the complete source code and the build instructions for the official Telegram messenger desktop client, based on the Telegram API and the MTProto secure protocol.

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Preview of Telegram Desktop

The source code is published under GPLv3 with OpenSSL exception, the license is available here.

The latest version is available for

• Windows 7 and above (64 bit) (portable)
• Windows 7 and above (32 bit) (portable)
• macOS 10.13 and above
• Linux static build for 64 bit
• Snap
• Flatpak

Version 4.9.9 was the last that supports older systems

• macOS 10.12
• Linux with glibc < 2.28 static build

Version 2.4.4 was the last that supports older systems

• OS X 10.10 and 10.11
• Linux static build for 32 bit

Version 1.8.15 was the last that supports older systems

• Windows XP and Vista (portable)
• OS X 10.8 and 10.9
• OS X 10.6 and 10.7

• Qt 6 (LGPL) and Qt 5.15 (LGPL) slightly patched
• OpenSSL 3.2.1 (Apache License 2.0)
• WebRTC (New BSD License)
• zlib (zlib License)
• LZMA SDK 9.20 (public domain)
• liblzma (public domain)
• Google Breakpad (License)
• Google Crashpad (Apache License 2.0)
• GYP (BSD License)
• Ninja (Apache License 2.0)
• OpenAL Soft (LGPL)
• Opus codec (BSD License)
• FFmpeg (LGPL)
• Guideline Support Library (MIT License)
• Range-v3 (Boost License)
• Open Sans font (Apache License 2.0)
• Vazirmatn font (SIL Open Font License 1.1)
• Emoji alpha codes (MIT License)
• xxHash (BSD License)
• QR Code generator (MIT License)
• CMake (New BSD License)
• Hunspell (LGPL)
• Ada (Apache License 2.0)

• Windows (32-bit) (64-bit)
• macOS
• GNU/Linux using Docker