At present, Privoxy is known to run on Windows 95 and later versions (98, ME, 2000, XP, Vista, Windows 7, Windows 10, Windows 11 etc.), GNU/Linux (RedHat, SuSE, Debian, Fedora, Gentoo, Slackware and others), Mac OS X (10.4 and upwards on PPC and Intel processors), Haiku, DragonFly, ElectroBSD, FreeBSD, NetBSD, OpenBSD, Solaris, and various other flavors of Unix. The binaries provided by members of the Privoxy team have the following testing platforms, earliest supported OS versions and processor architectures. Be aware that down-level versions of Privoxy contain known security issues. It is preferable to build the latest code to target earlier OS releases than use an earlier Privoxy release: Operating System Privoxy Release Testing Platforms Earliest OS Version Supported Processor Architectures Windows 3.0.33 Windows 10 Windows Vista Intel 32 and 64 bit 3.0.32 Windows 10 Windows XP Intel 32 and 64 bit macOS 3.0.33 El Capitan (10.11.6) Snow Leopard (10.6.1) Intel 64 bit 3.0.26 El Capitan (10.11.6), Tiger (10.4.1) PPC Tiger (10.4.1) Intel 32 & 64 bit, PowerPC Any operating system that runs TCP/IP, can conceivably take advantage of Privoxy in a networked situation where Privoxy would run as a server on a LAN gateway. Then only the gateway needs to be running one of the above operating systems. Source code is freely available, so porting to other operating systems is always a possibility, as is compiling for older versions of supported operating systems. ]]>