Top 3 C Bitset Projects

CRoaring

8 1,453 8.9 C

Roaring bitmaps in C (and C++), with SIMD (AVX2, AVX-512 and NEON) optimizations: used by Apache Doris, ClickHouse, and StarRocks
mlib

8 791 9.0 C

Library of generic and type safe containers in pure C language (C99 or C11) for a wide collection of container (comparable to the C++ STL).

Project mention: preprocessor stuff - compile time pasting into other files | /r/C_Programming | 2023-12-09

This uses the preprocessing library

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
croaring-rs

1 153 7.1 C

Rust FFI wrapper for CRoaring

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).