SysOp — VNC Remote Desktop

SysOp is a VNC client for Android built for people who administer machines, not just glance at them. It speaks RFB 3.8 (RFC 6143) and supports the TightVNC extensions, including file transfer. CONNECTIONS • TightVNC security and standard VNC password authentication, negotiated automatically; servers offering only RFB 3.3 still work • Saved connections with name, host, port and encoding — swipe to edit, delete, view or connect • Export and import the whole list as JSON ENCODINGS Tight, ZRLE, Hextile, CopyRect and Raw. Tight is offered first because it normally costs the least bandwidth, while Raw and CopyRect stay available as fallbacks every server understands. A connection can pin one encoding instead of letting the server choose. FILE TRANSFER Browse the remote machine's folders and move files in either direction with progress reporting, using the TightVNC 2.x file transfer extension. Servers without the extension say so up front instead of failing halfway through. INPUT • Tap to left-click, long-press to right-click; dragging pans your view rather than dragging on the remote machine • With a mouse attached: hover, middle and right buttons, and the scroll wheel • On-screen keyboard drawn by the app — docked, where the desktop slides up so nothing is covered, or floating as a window you can park anywhere. English and Russian layouts, one-shot Ctrl and Alt, adjustable opacity, key size and width • Physical keyboards — cover, Bluetooth or USB — forwarded as X11 keysyms with Ctrl and Alt shortcuts intact. Held keys are released the moment the session loses focus, so a modifier cannot get stuck down DISPLAY Pinch or use the on-screen buttons to zoom up to 8x, with fit-to-screen as the minimum so the desktop never shrinks away into a corner. Rotating the device re-fits it to the new shape. VIEW-ONLY MODE Watch a machine without touching it: zoom and pan still work while every path that would send a pointer, key or clipboard event is closed off. It can be switched on and off during a live session. SECURITY Passwords live in Android Keystore-backed storage — never in the connection list, never in an export. An optional master password covers connections that have none of their own. PERFORMANCE Networking and frame decoding run in a background isolate, so protocol work never stalls the interface. Also: bidirectional clipboard sync, light and dark themes following the system setting, and tablet layouts. A NOTE ON SECURITY RFB transmits in plain text and its password authentication is DES-based and weak by modern standards. These are properties of the protocol, not of this app, and apply to every RFB client. On networks you do not fully trust, tunnel the connection over a VPN or SSH. No ads. No accounts. No analytics. Nothing is sent anywhere except the server you specify.