BoringSSL
Reviewing and improving literally every function in OpenSSL one at a time is a truly heroic effort.<p>A part of me regrets that so much time and skill is being sunk into a swamp like OpenSSL though. Surely by now it'd have been easier for Google to produce a much more modern C++ based SSL toolkit that doesn't have this ridiculous litany of problems to resolve? An OpenSSL API emulation could then have been layered on top. I realise a lot of C/C++ apps rely on the OpenSSL API, but I hope one day the industry finds a way to rip off the sticking plaster.