Sysdig is described as 'Is open source, system-level exploration: capture system state and activity from a running Linux instance, then save, filter and analyze. Think of it as strace + tcpdump + lsof + awesome sauce' and is an app in the system & hardware category. There are more than 10 alternatives to Sysdig for a variety of platforms, including Linux, Windows, Mac, Web-based and Self-Hosted apps. The best Sysdig alternative is Wireshark, which is both free and Open Source. Other great apps like Sysdig are Datadog, tcpdump, HyperDX and DeepFlow.