FTP search engines: quick list

Usually, the conventional WWW (World Wide Web) search engines can do the Internet search job well, but sometimes (e. g., if you are looking for some particular file name) FTP search, cataloging & indexing engines can be of great help.
Here is a quick list of such sites.

• Мамонт (in Russian) / Mamont FTP Search Engine (in English)
[BTW, "мамонт" means "mammoth" in Russian]
• Gegereka - Internet file search
• Proisk (in Russian & English)
• FileSearch.ru (in Russian) / FileSearching.com (in English)
• NAPALM FTP Indexer
• FileWatcher File Search
• FreewareWeb - FTP Search
• Oth Net Search
• Krasfs (in Russian)
• MetaBot.ru (in Russian)
• ...