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Mercurygram vs Telegram Desktop: catalog facts
Mercurygram	Telegram Desktop
Free Free and open source under the GPL-3.0-or-later licence.	Freemium Free to use. Telegram Premium is an optional subscription for larger uploads, faster…
Linux, Android	Windows, macOS, Linux
Based on the official Telegram Desktop code Privacy-focused changes on top of upstream	Official client with published source and build instructions Cloud chats sync instantly across every device you sign in on
Still relies on Telegram's servers and account system Small project compared with the official client	Ordinary chats are not end-to-end encrypted and Telegram holds the keys Secret chats are not available in the desktop client
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
Account needed	Account needed
Needs internet	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.