Archivicons x 16 is a collection/icon set of twenty (20) 16x16px archive file icons, inspired by the 7-zip file archiver icon set.
Available for download as 8-bit PNGs.
This icon set is published under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA 3.0) License.
You're free to copy, distribute and transmit the work for non-commercial use. You can also adapt the work as long as you re-publish it under the same license.
Archivicons x 24 [link]
Archivicons x 32 [link]