| Software | XP Support | Pros | Cons | | :--- | :--- | :--- | :--- | | | Excellent (v2.8.x) | Open source, fully local, no cloud dependency. | No NAT traversal; you need port forwarding or VPN. No encryption by default (use SSH tunnel). | | UltraVNC | Excellent | Supports Windows Logon integration and file transfers. | Similar to TightVNC; slower than AnyDesk on low bandwidth. | | TeamViewer 14 | Yes (Last version) | Very polished, good firewall traversal. | TeamViewer aggressively flags commercial use. Older versions are insecure. | | Radmin VPN (LAN only) | Poor | N/A | Requires modern WinSock API – generally fails on XP. |

: You must have Windows XP Service Pack 3 (SP3) installed. AnyDesk generally does not support SP1 or SP2 due to the lack of modern encryption protocols required for a secure connection.