RustDesk

RustDesk is an open-source remote desktop tool and TeamViewer alternative that works without configuration.

Key Features:

• Works out of the box
• Use public relay or self-host your own server
• Write your own server if needed
• Cross-platform support
• Open-source lets you control your data
• Low latency and high performance

Privacy: Being open-source, unlike TeamViewer or AnyDesk, you can self-host your relay servers.