is the file extension source. Here you'll find a collection of file extensions; many linked to the programs that created the files. This is the FILExt home page.
a list of 50+ similar services that are absolutely free and require no e-mail registration to use. Included in the list are file size limits, download limits and the amount of time the file remains on the server for download.
This is the public wiki for the Heritrix archival crawler project. Heritrix is the Internet Archive’s open-source, extensible, web-scale, archival-quality web crawler project. Heritrix (sometimes spelled heretrix, or misspelled or mis-said as heratrix/heritix/ heretix/heratix) is an archaic word for heiress (woman who inherits).
Y. Chung, M. Toyoda, und M. Kitsuregawa. Proceedings of the 5th International Workshop on Adversarial Information Retrieval on the Web, Seite 9--16. New York, NY, USA, ACM, (2009)