Opera Developer 73.0.3834.0
This version is the bleeding edge development from Opera; features will be piloted, and may be shelved, taken back to the drawing board, or taken forward to the Opera Next stream - feature complete, but potentially buggy.
source https://www.techspot.com/downloads/6150-opera-developer.html
source https://www.techspot.com/downloads/6150-opera-developer.html