Top 4 Unordered Open-Source Projects

sparsepp

4 1,230 1.1 C++

A fast, memory efficient hash map for C++
plf_colony

1 389 6.7 C++

An unordered C++ data container providing fast iteration/insertion/erasure while maintaining pointer/iterator validity to non-erased elements regardless of insertions/erasures. Provides higher-performance than std:: library containers for high-modification scenarios with unordered data.
InfluxDB

www.influxdata.com featured

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.
gtl

5 90 7.1 C++

Greg's Template Library of useful classes.

Project mention: Inside boost::concurrent_flat_map | /r/cpp | 2023-07-07

gtl library author here. Very nice writeup! Reading it made me think, and I believe I know why gtl::parallel_flat_hash_map performs comparatively worse for high-skew scenarios (just pushed a fix in gtl).

unordered-intmap

0 1 0.0 Haskell

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).