Wikipedia
YouTomb
YouTomb is a website built to track videos removed by popular video-sharing website YouTube. The site operates a searchable database of recent video removals on YouTube. It tracks not only DMCA takedowns but also terms of use violations and user removals. Those videos removed due to DMCA takedowns are sortable by alleged copyright holder. The database is generated by software that repeatedly scans YouTube for unavailable videos. The site is operated by the MIT chapter of Students for Free Culture and its source code is licensed under the GNU Affero General Public License. Although it only tracks YouTube, a future goal is to cover more video websites on YouTomb (unavailable as of November 2014).