Ask HN: What open source project, in your opinion, has the highest code quality?
SQLite.and for this reason alone!https://www.sqlite.org/testing.html    As of version 3.23.0 (2018-04-02), the SQLite library consists of approximately 
    128.9 KSLOC of C code. (KSLOC means thousands of "Source Lines Of Code" or, in 
    other words, lines of code excluding blank lines and comments.) 

    By comparison, the project has 711 times as much test code and test scripts - 
    91772.0 KSLOC.