Mahimahi is a suite of user-space tools for network emulation and analysis.

Each mahimahi tool spawns a lightweight container, generally connected to the outside via a synthetic network device that observes packets in transit or emulates a desired behavior.

The tools are composable so that a series of emulated network effects can be chained together, with mahimahi containers nested inside each other. Each tool takes an optional command to execute, so it is possible to create a series of nested containers with one command line.