Joel’s conclusions were based on a single data point. There were successful rewrites as well: https://medium.com/@herbcaudill/lessons-from-6-software-rewrite-st

Joel’s conclusions were based on a single data point. There were successful rewrites as well: https://medium.com/@herbcaudill/lessons-from-6-software-rewrite-stories-635e4c8f7c22 https://medium.com/@herbcaudill/lessons-from-6-software-rewr... In particular, Basecamp successful rewrite seems more applicable here, since both are web services. They never sunset previous two versions though. Edit: typo.