Top Alternatives to Guacamole

UltraVNC is an open-source remote desktop and administration software designed for Microsoft Windows. It allows users to remotely access and control another computer, with features like file transfer, integrated chat, and VNC protocol support, making it a versatile tool for remote support and accessing remote machines.

TightVNC is a free and open-source remote desktop application that enables users to control another computer's screen remotely. It is known for its efficiency, especially on slower network connections, and offers cross-platform support for Windows, Linux, macOS, and other VNC-compatible systems.

RealVNC offers secure and reliable remote access and control solutions across various platforms. It allows users to connect to and manage computers from anywhere, providing essential functionality for IT support, remote work, and personal access.

Ammyy Admin is a freeware remote desktop application designed for seamless remote access, support, and administration. It's a lightweight solution offering essential features for connecting to and controlling remote computers, facilitating tasks like technical assistance and managing unattended machines.

TigerVNC is a high-performance, open-source VNC (Virtual Network Computing) software suite that provides robust remote desktop access capabilities. It includes both server and client components, allowing users to securely control and interact with remote computers over a network, offering a reliable alternative for remote support, administration, and development tasks.

Vinagre is a versatile remote desktop viewer for the GNOME environment, supporting VNC, SSH, RDP, and SPICE protocols. It provides a user-friendly interface for connecting to and managing remote machines.

Screen Sharing is a built-in macOS application that allows users to remotely access and control another Mac's screen or share their own screen with others. Utilizing the VNC protocol, it provides a straightforward method for remote support, collaboration, or accessing files and applications on a remote machine. Integrated deeply within the macOS ecosystem, it offers a seamless experience for users within the Apple environment.

Chicken of the VNC is a discontinued, open-source Virtual Network Computing (VNC) client specifically designed for macOS. It allowed users to view and interact with a remote computer's screen, providing a way to administer or control other machines over a network using the VNC protocol.

Screens is a powerful and user-friendly VNC client designed for macOS and iOS, enabling seamless remote access to computers. Connect to your machines from anywhere with a robust feature set including SSH tunneling, file transfer, and multi-monitor support. Perfect for IT professionals, remote workers, and anyone needing quick and reliable access to their desktop.

Viubo is a robust remote access and support platform designed for both technical support and personal use. It provides secure and efficient ways to control and manage remote computers, offering features like remote desktop, file sharing, unattended access, and multi-monitor support.