Krfb review
A free, open-source VNC server for basic Linux desktop access.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Krfb is a free, open-source Linux desktop-sharing server from KDE. It shares the current desktop through the VNC/RFB protocol, allowing a remote user to view the screen and, when permitted, control the keyboard and mouse. It supports both attended connections, which can be accepted or refused, and unattended remote access. Authentication is controlled with a password, while network port configuration and local-network announcements through Service Location Protocol provide additional connection options. Krfb runs in the system tray after its main window is closed.
The main fit is compatibility with established VNC workflows. Krfb can accept connections from VNC clients and integrates with KDE Remote Desktop Connection, making it suitable for Linux users who already have a compatible viewer. It is distributed under the GPL-2.0-or-later license and is installed through Linux distribution package managers or AppStream-compatible stores. The published product details describe a desktop-sharing server rather than a hosted remote-support service, so its use centers on sharing an existing Linux desktop instead of managing a broader support operation.
Krfb’s narrow focus is both its strength and its boundary. Password authentication, attended approval, unattended access, remote input control, port configuration, and local-network service announcement cover the core needs of basic Linux VNC sharing. It does not include file transfer, session recording, mobile apps, or broader platform support. Choose Krfb when free, open-source Linux desktop sharing and VNC compatibility are the priorities. Choose an alternative when remote support requires mobile access, cross-platform coverage, file exchange, recording, or a hosted service model.
Krfb pros and cons
- Where it wins
- Free, open-source Linux desktop sharing
- Supports attended and unattended remote access
- Works with VNC clients and KDE Remote Desktop Connection
- Where it doesn't
- Linux-only platform support
- No file transfer or session recording
- No mobile apps or hosted remote-support workflow
Krfb fact sheet, pricing and score →
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