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TightVNC vs Krfb: catalog facts
TightVNC	Krfb
Free Free and open source under the GPL. A commercial licence is sold for redistribution.	Free Free and open source under the GPL, developed by KDE.
Windows, Linux	Linux
Very light on resources, with a Java viewer that runs from any browser host Simple, dependable remote control on a local network	Shares the existing desktop session rather than a separate one Works with any standard VNC client
No relay service; you must reach the machine yourself over the network VNC authentication is weak and needs to be tunnelled over SSH or a VPN	Linux only Fits best on a KDE Plasma desktop
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License: GPL-2.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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