Ask HN: What are some examples of well written C/C++ codebases?

Try Redis: https://github.com/antirez/redis

I will pass on recommendations from Nick Black:

9Some of the best code I can recommend includes: the core Linux kernel, OpenVPN, OProfile, OpenSSH, and the NPTL threading implementation from GNU libc. I recommend OpenSSL, the Linux PATA or TTY implementations, the SVR4 shared memory API, or the Berkeley Sockets resolver(3) API for examples of what not to do. Source: https://nick-black.com/dankwiki/images/8/85/Msadvice.pdf

Maybe try this: https://github.com/id-Software/DOOM

Postgres: https://github.com/postgres/postgres

Redis Postgres Nginx Llvm+clang

They are a joy to read