Source:
https://www.cnet.com/roadshow/news/open-source-apollo-speeds-up-baidus-self-driving-software-development/
Quoting:
"In July, Chinese technology company Baidu made its Apollo 1.0 self-driving car software available as open source on Github, using the Apache/BSD license. By Day 4 of the release, it was the most downloaded C++ software on the site.
At an Apollo meetup hosted by Baidu at its Sunnyvale, California, offices, company president Ya-Qin Zhang announced Apollo 1.5, a major iteration of the software, just three months after the initial release."