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Unigram vs Mercurygram: catalog facts
Unigram	Mercurygram
Free Free and open source under the GPL-3.0.	Free Free and open source under the GPL-3.0-or-later licence.
Windows	Linux, Android
Interface built for Windows Available from the Microsoft Store	Based on the official Telegram Desktop code Privacy-focused changes on top of upstream
Windows only Requires a Telegram account	Still relies on Telegram's servers and account system Small project compared with the official client
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-or-later
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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