Siege is described as 'Regression test and benchmark utility. It can stress test a single URL with a user defined number of simulated users, or it can read many URLs into memory and stress them simultaneously' and is a Benchmark tool in the os & utilities category. There are five alternatives to Siege for a variety of platforms, including Linux, Mac, Windows, Self-Hosted and Python apps. The best Siege alternative is Apache JMeter, which is both free and Open Source. Other great apps like Siege are locust, wrk, hey and Apache Benchmark.