DisavowFiles.com is a service of Bruce Clay, Inc. (http://www.bruceclay.com), an Internet marketing firm founded in 1996 by SEO industry leader Bruce Clay.
DisavowFiles.com provides a crowdsourced database for Google disavow files, software tools to extract the data and a number of reports. The site is designed as a co-operative where participants can submit their Google disavow files into an anonymized collective database. The purpose is to provide a means for webmasters and SEOs to help each other understand more about the sites that link to them and fight link spam.
The DisavowFiles software tools are proprietary. Link data integrated into DisavowFiles.com reports and tools is pulled from a third-party, Majestic, via an API.