The best open source alternative to UltraViewer is RustDesk. If that doesn't suit you, our users have ranked more than 100 alternatives to UltraViewer and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to UltraViewer are Remmina, TightVNC, Bananas Screen Sharing and DWService.
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.
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.
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.
HopToDesk is a Remote Desktop Software that focuses on privacy and security. Allowing users to connect and control any device from anywhere. HopToDesk with its frictionless application is perfect for enterprises with work-from-home employees or the personal user who wants to...
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.
X2Go is an open source remote desktop software for Linux that uses the NX technology protocol.
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.
1Remote (previously PRemoteM) is a modern personal remote session manager and launcher. It is a single place to manage all your remote sessions supporting a number of different protocols.
Singapore
Italy
EU
Russia
Estonia
United Arab Emirates
United States
Germany
China