The bit array data structure is implemented in Java as the BitSet class. Unfortunately, this fails to scale without compression. JavaEWAH is a word-aligned compressed variant of the Java bitset class. It uses a 64-bit run-length encoding (RLE) compression scheme. The goal of word-aligned compression is not to achieve the best compression, but rather to improve query processing time. Hence, we try to save CPU cycles, maybe at the expense of storage. However, the EWAH scheme we implemented is ...

Artifacts using JavaEWAH (105)
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JGit Optional LFS Support
Last Release on Dec 2, 2025
Wt Forge
Last Release on Nov 17, 2021
Fiji allows the imposition of schema and much else upon HBase.
Last Release on Jun 23, 2016
REST + DotMaven + Autoprox + Revisions + SetBack
Last Release on Oct 24, 2016
Eclipse EGit Gitflow Feature
Last Release on Dec 2, 2025
Fiji allows the imposition of schema and much else upon HBase.
Last Release on Jun 23, 2016
Extremely fast and compact in-memory embedded column oriented database
Last Release on Aug 23, 2017
Fiji allows the imposition of schema and much else upon HBase.
Last Release on Jun 23, 2016
NEM Core
Last Release on Apr 20, 2022
This project contains tools to generate the model code from the ESDL specification via a 'mvn clean install' command. It also tags the esdl.ecore file with the current git tag
Last Release on May 29, 2026