TDLib

In plain words

TDLib is an open-source library that enables developers to build Telegram applications by handling the underlying technical infrastructure. It manages network communication, encryption, and local data storage, allowing developers to focus on user interface design and animations instead of backend complexity. The library is suitable for developers looking to create custom Telegram clients or integrate Telegram messaging capabilities into their applications.

written from the facts on this page · September 2026

From the sources

The Telegram Database Library (TDLib) takes care of all network implementation details, encryption and local data storage, so that developers can dedicate more time to design, responsive interfaces and beautiful animations.

Meet TDLib, a powerful library for third-party developers that makes it easy to build fast, secure and feature-rich Telegram apps.

Telegram offers developers more than just the Bot API . Since day one, we've also had a free and open Telegram API that allows anyone to create their own messaging apps operating in the Telegram cloud. These apps openly compete with the official ones and some of them have now reached more than 10 million downloads on Google Play. Users of these alternative clients can communicate with anyone on Telegram, but the apps often offer experimental, highly specialized or locally flavored features. Today we are introducing a new tool for third-party developers that will make it even easier to build fast , secure and feature-rich Telegram apps on our platform. Meet TDLib – the Telegram Database…from telegram.org

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