NoMachine is a proprietary remote desktop application built on the NX protocol, offering fast cross-platform remote access with a free personal-use edition and paid Enterprise subscriptions for business use. Full details →

NoMachine’s free tier covers personal use, but commercial deployments require a paid Enterprise subscription, and the client and server are closed source. RustDesk offers a directly comparable self-hosted remote-access experience under an open source license, with no per-seat licensing if you run your own relay server. Remmina takes a different approach as a multi-protocol client for connecting to existing RDP, VNC, SSH, or SPICE servers, which suits users who need to reach machines that already expose one of those standard protocols rather than replacing NoMachine’s own client-server model outright.

Open Source Alternatives

RustDesk is an open source remote desktop application written in Rust, designed for self-hosting your own relay server as a free, auditable alternative to AnyDesk, NoMachine, and TeamViewer.

AGPL-3.0

Remmina is a free, open source remote desktop client for Linux and other POSIX systems, supporting RDP, VNC, SSH, SPICE, and X2Go through a single GTK application.

GPL-2.0-or-later