Sites and apps similar to SARD Anti-Cheat include PunkBuster, which is free. Other options are Easy Anti-Cheat, Valve Anti-Cheat and BattlEye. In total there are four Anti-Cheat Tools like SARD Anti-Cheat for Mac, Windows and Linux.
PunkBuster is Anti-Cheat system for online multiplayer games (eg Call of Duty). It keeps the cheaters out, but due to many incompatibilities (for example with Steam overlay, x64 systems, Linux systems) it also keeps many legit players out.
Easy Anti-Cheat is the industry-leading anti–cheat service, countering hacking and cheating in multiplayer PC games through the use of hybrid anti–cheat mechanisms.
United States
Valve Anti-Cheat (VAC) is an automated system designed to detect cheats installed on users' computers. If a user connects to a VAC-Secured server from a computer with identifiable cheats installed, the VAC system will ban the user from playing that game on VAC-Secured...
BattlEye (BE) was founded by Bastian Suter in October 2004. Starting out as an external 3rd-party anti-cheat for Battlefield Vietnam, first versions were quickly released and it rapidly gained first acknowledgement.
Germany
EU