FileProInfo.com is the file information database of over 15,000+ file types, software, free online apps/tools, so tools, guest blogs, videos, and images.
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Chicken Dinner - Grow your MailChimp list fast with a giveaway!
Convertio - File Conversion in the Cloud
Mailchimp Pro - A new suite of features to optimize emails for $199/month
FileInfo.com - FileInfo is the central file extensions registry and contains a database of over 10,000 file types.
Ghost - Ghost is a fully open source, adaptable platform for building and running a modern online publication. We power blogs, magazines and journalists from Zappos to Sky News.
File-Extensions.org - Large computer file extension library with detailed explanation of each file type with links to download free or associated software programs.