Abseil
Abseil is an open C++ collection for strings, time, hash containers, synchronization, status handling, and language supplements.
Why use it
Large native codebases standardize foundations on implementations proven under production workloads.
Where it fits
Find engines, frameworks, code libraries, version control, and production automation.
What to check
Abseil follows a live-at-head compatibility model; pinning old commits indefinitely increases security and upgrade risk.