The best open source alternative to RealVNC is RustDesk. If that doesn't suit you, our users have ranked more than 100 alternatives to RealVNC and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to RealVNC are Remmina, TightVNC, UltraVNC and Bananas Screen Sharing.
Provides secure, cross-platform remote access and file sharing with no registration needed. Offers end-to-end encryption, self-hosting, multi-monitor support, screen sharing, and portable use, all with a lightweight, ad-free interface.
Open source remote desktop client for Linux and BSD supporting RDP, VNC, SPICE, and more, aimed at sysadmins and travelers needing remote access with features like scrollable high-res desktops and organized connection management.
TightVNC is a free remote desktop application. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer.
Secure, free remote desktop access for Windows lets users control computers via LAN or internet, share screens, sync clipboards, transfer files, support IT helpdesks, provide remote demonstrations, and assist users without pre-installation using add-ons.
Almost everyone thinks UltraVNC is a great RealVNC alternative.
Bananas offers a cross-platform, peer-to-peer screen-sharing service without needing an account or server infrastructure. It uses WebRTC for secure connections, lets users collaborate with multiple cursors, and features a unique connection URL. Privacy is ensured as no data is stored.
DWService is a half (only the client/agent) open source project which offers a service that allows access to remote systems (Windows, Mac, Linux, Raspberry...) using a standard web browser - without any component required on the client side.
unlimited devices, no installation for viewer/client, free dispatcher
TigerVNC is an advanced VNC implementation. It is based on the fourth generation of VNC. TigerVNC also includes features from the TightVNC and TurboVNC projects. This includes accelerated JPEG compression. TigerVNC supports the latest X.Org X server.
Easy to configure, fast, local and secure.
It has all the features of tightvnc, a good license, it comes with windows 64 binaries, it appears to be an active project with security fixes, and it works well.
Most users think TigerVNC is a great RealVNC alternative.
Guacamole is a clientless remote desktop gateway. It supports standard protocols like VNC and RDP. We call it clientless because no plugins or client software are required.
This is a full computer management web site. With MeshCentral, you can run your own web server to remotely manage and control computers on a local network or anywhere on the internet.
Remotely is a free and open-source remote desktop, remote scripting, and rich auto-complete to maximize your IT support efficiency.
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Enjoy the freedom of using your software wherever you want, the way you want it, in a world where interoperability can finally liberate your computing experience.
A VNC/SSH Client for the GNOME Desktop
Singapore
Italy
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Russia
Belgium
Estonia
United States
I've used it for around 10 years now and haven't found anything more powerful or useful. I'm always keeping my eyes opened for new things, but so far this has worked for me extremely well.