RFB protocol remote desktop viewer & screen server (compatible with VNC / TightVNC / UltraVNC servers). A Linux alternative to TightVNC and UltraVNC for viewing remote RFB desktops and sharing your X11 screen. Disclaimer: This project is an independent open-source tool. Not affiliated with, sponsored by, or endorsed by GlavSoft LLC or UltraVNC.

FEATURES (100% real TCP/RFB socket operations, zero mock data): • Pure-Python RFB 3.3 / 3.7 / 3.8 client with live framebuffer rendering, Scale-to-Fit and View-Only modes • Security types: None (1) and password challenge-response authentication (type 2, pure-Python FIPS 46-3 DES) • Encodings: Raw (0), CopyRect (1), and DesktopSize (-223) dynamic resolution changes • Full remote keyboard (X11 keysyms), mouse pointer/wheel, Ctrl+Alt+Del shortcut, and clipboard sync • Built-in view-only RFB 3.8 server sharing the active X11 screen with 64x64 dirty-tile detection • Saved server address book (never stores passwords on disk), connection history, and live protocol trace

NOTES & HONEST LIMITATIONS: • Client supports Raw and CopyRect encodings and None / DES challenge authentication (no Tight/ZRLE/TLS/VeNCrypt). • Built-in screen server is view-only (captures X11 via QScreen.grabWindow; remote input is counted, not injected; under Wayland sessions only X11/XWayland surfaces are visible).

Support development: https://buymeacoffee.com/thanhnv128b