Apps similar to Vaurien include Chaos Monkey, which is free and open source. Other options are Toxiproxy. Between them they cover Linux, self-hosting, Mac and Windows.
Chaos Monkey is a tool invented in 2011 by Netflix to test the resilience of its IT infrastructure. It works by intentionally disabling computers in Netflix's production network to test how remaining systems respond to the outage.
Toxiproxy is a framework for simulating network conditions. It's made specifically to work in testing, CI and development environments, supporting deterministic tampering with connections, but with support for randomized chaos and customization.
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