Data Formats for Computers

• Audio@
• Document
• Fonts@
• Graphics
• Markup Languages
• Video@

• HTML@
• Portable Document Format
• SGML@
• SMIL@
• XHTML@
• XML@

• Compression
• Conversion

• Computers: Software: Globalization: Character Encoding 
• Computers: Internet: Protocols 

• .dot WHAT?  - File extension information resource. Covers all file formats used in Microsoft Windows, Mac OS X, and Unix based operating systems.
• Data Liberation  - Offers information and solutions on how to move personal data in and out of Google's array of products or services.
• File-Extensions.org  - Extensive collection of lists and information on file extensions for different platforms.
• FileFormat.Info  - Comprehensive source for information about digital file formats. With file converters, tools, tips and tricks, and resource links.
• FileInfo.com  - Online source for information about text, data, image, audio, video, web, system, plugin, executable, encrypted, backup, and game file formats or extensions.
• Filesuffix.com  - Online filename extension database with answers to typically asked questions about file extensions.
• FILExt  - Serves as a guide to identifying or knowing what a particular file format is.
• Uniblue File-Extension  - Free online file extension library with free PC utilities.
• Wotsit.org  - File and data format resource for programmers. Presents specifications, examples, and references.