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mRemoteNG vs Remote Desktop Connection Manager: catalog facts
mRemoteNG	Remote Desktop Connection Manager
Free Free and open source under the GPL.	Free Free download from Microsoft Sysinternals.
Windows	Windows
RDP, VNC, SSH, telnet, rlogin, raw sockets and HTTP in one tabbed window Folder tree with inherited settings, so a hundred servers stay manageable	Groups servers and connects to a whole group at once Live thumbnail view of many sessions
The last tagged stable release is 1.76 from 2019 Windows only	Windows and RDP only Closed source
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-2.0	License not stated
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 24, 2026

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