Telegram

Cloud-based messaging platform for mobile and desktop with a focus on security, speed, and developer openness. Messages are delivered quickly, support multi-device sync, and the platform offers an open API and client source code.

Hosts more than 10 million bots on its Bot API. Differentiates through an open development model: Bot API over HTTPS for simple integrations, full MTProto API and TDLib for custom clients, and Mini Apps built with JavaScript. Login with Telegram enables OAuth-style sign-in for third-party apps. Groups support up to 200,000 members with no limits on media size.

Key capabilities:

• Bot API with HTTPS interface for building automated services and integrations
• Mini Apps with JavaScript for in-chat web applications, stores, and tools
• TDLib and full Telegram API for building custom clients on any platform
• Gateway API for sending verification codes via Telegram instead of SMS
• Login with Telegram for OAuth and seamless third-party authentication

Developers build notification bots for CI/CD pipelines, status alerts, and deployment updates. Customer support bots handle FAQs and route conversations. Mini Apps power in-chat stores, productivity tools, and games. The Bot API integrates with GitHub, Gmail, and other services through official bots. Teams use groups and channels for internal communication with file sharing, polls, and threaded discussions.