File Formats Websites
fileformat.info
FileFormat.Info is the source for file format standards, online file conversions, and detailed file specifications, including Unicode characters, MIME types and file extensions
34,686 
$ 387,360.00
filetypeadvisor.com
Information about filename extensions. Everything about file types and file formats. Description, usage, programs to open and covert files.
95,234 $ 141,120.00