Stars
Style guides for Google-originated open-source projects
a fast, scalable, multi-language and extensible build system
chap analyzes un-instrumented core files for leaks, memory growth, and corruption
Bazel rules for creating packages of many types (zip, tar, deb, rpm, ...)
Project planning for the C++ Library Evolution Working Group
LaTeX and Markdown source for the Ranges TS/STL2 and associated proposals