JRebel is a build automation tool developed by Estonian company ZeroTurnaround, acquired by Rogue Wave Software in 2017, and then acquired (and now supported by) Perforce since that company's 2019 acquisition of Rogue Wave. The vendor says users of JRebel saves Java teams a month of coding time per year on average.
Hot code swapping doesn't have many players...it's mainly JRebel. We use JRebel a lot in our backend code development where it minimizes our development cycle (20min down to 30sec). For Android, the competitor is Android Studio's Instant Run which works fairly well now. For …