Tiger is described as 'Linux security tool that can be use both as a security audit and intrusion detection system' and is an app in the Security & Privacy category. There are four alternatives to Tiger for Linux, Mac, Windows, BSD and Online / Web-based. The best alternative is Chkrootkit, which is both free and Open Source. Other great apps like Tiger are Lynis (Free, Open Source), SecPod Saner Personal (Free Personal) and RootkitRevealer (Free).
Chkrootkit is a Linux tool to locally check for signs of a rootkit. It contains: - chkrootkit: shell script that checks system binaries for rootkit modification. - ifpromisc.c: checks if the interface is in promiscuous mode. - chklastlog.c: checks for lastlog deletions.
SecPod Saner is a light-weight, easy to use, enterprise-grade security solution for proactively assessing and securing your personal computer. It identifies security loopholes and misconfigurations, and remediates to ensure systems are secure.
RootkitRevealer is an advanced rootkit detection utility. It runs on Windows NT 4 and higher and its output lists Registry and file system API discrepancies that may indicate the presence of a user-mode or kernel-mode rootkit.