Would you consider Audacity another example? (I'm one of the original authors.) It survived for ~20 years as a community-supported project - it was popular but

Would you consider Audacity another example? (I'm one of the original authors.) It survived for ~20 years as a community-supported project - it was popular but clunky and limited in many ways. Since being acquired by Muse the UI has been cleaned up and modernized quite a bit, while still keeping it open-source.