uh-huh: https://github.com/earthly/earthly/blob/v0.8.15/LICENSE (MPLv2, just like TF used to be) https://github.com/dagger/dagger/blob/v0.15.2/LICENSE (Apache 2)
I would guess dev tooling usually also falls into the "nice to have," or as my former CEO used to say "vitamins vs painkillers"