| Apache Commons Compress was derived from various sources, including: | |
| Original BZip2 classes contributed by Keiron Liddle | |
| <keiron@aftexsw.com>, Aftex Software to the Apache Ant project | |
| Original Tar classes from contributors of the Apache Ant project | |
| Original Zip classes from contributors of the Apache Ant project | |
| Original CPIO classes contributed by Markus Kuss and the jRPM project | |
| (jrpm.sourceforge.net) |