| 1 | !BT | BitTorrent | BitTorrent Incomplete Download Format |
| 2 | 3DM | Robert McNeel & Associates | Rhino 3D Model |
| 3 | 509 | N/A | Internet Security Certificate |
| 4 | AHTM | N/A | HTML |
| 5 | AQF | Liquid Development, LLP | Aquifer-Generated Web Page |
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| 6 | AS | Adobe Systems | ActionScript Format |
| 7 | ASCX | Microsoft | ASP.NET User Control Format |
| 8 | ASHX | Microsoft | ASP.NET Web Handler Format |
| 9 | ASMX | Microsoft | ASP.NET Web Service Format |
| 10 | ASP | Microsoft | Active Server Page |
| 11 | ASPX | Microsoft | Active Server Page Extended Format |
| 12 | ATOM | N/A | Atom Web Feed Format |
| 13 | AXL | N/A | XML Project |
| 14 | BC | BitComet | BitComet Partially Downloaded Format |
| 15 | BC! | BitComet | BitComet Incomplete Format |
| 16 | BSON | 10gen | BSON Binary JSON |
| 17 | CFC | Adobe Systems | ColdFusion Component Format |
| 18 | CFML | Adobe Systems | ColdFusion Markup Language Format |
| 19 | CGI | N/A | Common Gateway Interface Script |
| 20 | CHL | Microsoft | Microsoft Internet Explorer Channel Information Format |
| 21 | CHTML | N/A | Compact HTML Document |
| 22 | CLASS | Oracle | Java Class Format |
| 23 | CRDOWNLOAD | Google | Chrome Partially Downloaded Format |
| 24 | CRT | N/A | Security Certificate |
| 25 | CSHTML | Microsoft | ASP.NET Razor Web Page |
| 26 | CSS | W3C | Cascading Style Sheet |
| 27 | CSS1 | N/A | Cascading Style Sheet |
| 28 | DEFAULTSITE | N/A | 1&1 defaultsite |
| 29 | DER | N/A | DER Certificate Format |
| 30 | DROPBOX | Dropbox team | Dropbox |
| 31 | ED2K | eMule-Project | EDonkey Download Link |
| 32 | EDML | Adobe Systems | Adobe Extension Data Markup Language Document |
| 33 | EML | Microsoft | E-Mail Message |
| 34 | ENT | N/A | External Entity |
| 35 | EPIBRW | N/A | Web Format Location |
| 36 | FAQ | N/A | Frequently Asked Questions Document |
| 37 | FDML | N/A | Forms Definition Markup Language |
| 38 | FEED-MS | N/A | Microsoft Rss Feed Store |
| 39 | FEEDSDB-MS | N/A | Microsoft RSS Feeds Store |
| 40 | FLV | Adobe Systems | Flash Video Format |
| 41 | FWP | Microsoft | Microsoft Expression Web Package |
| 42 | GDOC | Google | Google Drive Document |
| 43 | GDOCX | Google | Google Drive Document |
| 44 | GDRAW | Google | Google Drive Drawing |
| 45 | GFORM | Google | Google Drive Form |
| 46 | GG | Google | Google Desktop Gadget Format |
| 47 | GIF | CompuServe | Graphical Interchange Format |
| 48 | GIM | Sony | PlayStation Portable Image Format |
| 49 | GNE | Ludicorp | Flickr Web Page |
| 50 | GSHEET | Google | Google Drive Spreadsheet |
| 51 | GSLIDES | Google | Google Drive Presentation |
| 52 | GTABLE | Google | Google Drive Fusion Table |
| 53 | HDM | Openwave | HDML Format |
| 54 | HDML | Openwave | Handheld Device Markup Language Format |
| 55 | HTA | Microsoft | HTML Application |
| 56 | HTC | Microsoft | HTML Component Format |
| 57 | HTM | N/A | Hypertext Markup Language Format |
| 58 | HTML | WHATWG | Hypertext Markup Language Format |
| 59 | HTML5 | N/A | HTML5 Hypertext Markup Language Revision 5 Source |
| 60 | HTMLS | N/A | HyperText Markup Language Document With Server-side Include |
| 61 | HTM~ | N/A | HTML Hypertext Markup Language web page |
| 62 | IHTML | N/A | Inline HyperText Markup Language |
| 63 | INC | N/A | Include Format |
| 64 | JHTML | N/A | Java HTML Web Page |
| 65 | JS | N/A | JavaScript Format |
| 66 | JSC | N/A | JavaScript Config |
| 67 | JSP | Oracle | Java Server Page |
| 68 | JSPA | N/A | Java Servlet Alias |
| 69 | JSPX | Eclipse Foundation | XML Java Server Page |
| 70 | JST | Oracle | JavaServer Page Document |
| 71 | JSXBIN | Adobe Systems | Binary ExtendScript Script Format |
| 72 | LASSO | LassoSoft | Lasso Database-Driven Web Page |
| 73 | MAGNET | N/A | Generic |
| 74 | META4 | N/A | Metalink 4.0 |
| 75 | METALINK | N/A | Metalink 3.0 |
| 76 | MHT | N/A | MHTML Web Archive |
| 77 | MHTM | N/A | Mime HTML (MHTML) |
| 78 | MHTML | N/A | MIME HTML Format |
| 79 | MIME | The Internet Engineering Task Force | Multi-Purpose Internet Mail Extension |
| 80 | MME | N/A | Multi-Purpose Internet Mail |
| 81 | MS-TNEF | Microsoft | MS Transport Neutral Encapsulation Format |
| 82 | MSPX | Microsoft | Microsoft ASP.NET Web Page |
| 83 | MSRCINCIDENT | Microsoft | Windows Remote Assistance Invitation Format |
| 84 | MXML | Adobe Systems | Flex MXML Component |
| 85 | NEWSLOC | Apple, Inc. | Apple Mac OS X Finder News Internet Location |
| 86 | NSCONFIG | N/A | nsconfig authentication data |
| 87 | OGNC | N/A | Dynamic Web Page |
| 88 | OPML | The Omni Group | Outline Processor Markup Language Format |
| 89 | P7B | N/A | PKCS #7 Certificate Format |
| 90 | P7C | N/A | PKCS #7 Certificate Format |
| 91 | P7R | N/A | Certificate Request Response Format |
| 92 | PART | N/A | Partially Downloaded Format |
| 93 | PARTIAL | Microsoft | Internet Explorer Partially Downloaded Format |
| 94 | PEM | N/A | Privacy Enhanced Mail Certificate |
| 95 | PHP | N/A | PHP Source Code Format |
| 96 | PHP4 | N/A | PHP 4 Web Page |
| 97 | PHP5 | N/A | PHP 5 Web Page |
| 98 | PHPS | The PHP Group | PHP Script Source Code |
| 99 | PHT | N/A | Partial Hypertext |
| 100 | PHTM | N/A | PHP-Based Web Page |
| 101 | PHTML | N/A | PHP Web Page |
| 102 | PNG | PNG Development Group | Portable Network Graphic |
| 103 | RDF | N/A | Resource Description Framework Format |
| 104 | RHTML | N/A | Ruby HTML Web Page |
| 105 | RSS | N/A | Rich Site Summary |
| 106 | SHT | N/A | HTML Format With Server Side Includes |
| 107 | SHTM | N/A | HTML Server Side Include Format |
| 108 | SHTML | N/A | Server Side Include HTML Format |
| 109 | SMIL | SYMM Working Group | SMIL Presentation Format |
| 110 | SOL | Adobe Systems | Flash Local Shared Object Format |
| 111 | SRX | N/A | SPARQL Query Results XML Format Result |
| 112 | SSH | F-Secure | Data Fellows Secure Shell Document |
| 113 | SSI | Adobe Systems | Adobe Dreamweaver Server Side Include Format |
| 114 | STM | Microsoft | HTML Server Side Include Format |
| 115 | STML | N/A | SSI HTML Format |
| 116 | SVC | Microsoft | WCF Web Service Format |
| 117 | SWF | Adobe Systems | Shockwave Flash Movie |
| 118 | SWF2 | Adobe Systems Incorporated | Flash |
| 119 | SWFL | Adobe Systems Incorporated | Shockwave Flash |
| 120 | SWZ | Adobe Systems | Adobe Flash Player Cache Format |
| 121 | TORRENT | BitTorrent | BitTorrent Format |
| 122 | TPS | TiePie engineering | Scam Torrent Format |
| 123 | TSTREAM | p2p-next consortium | SwarmPlayer Streaming Torrent |
| 124 | UCF | Cisco Systems | WebEx Media Format |
| 125 | URL | N/A | Internet Shortcut |
| 126 | URL_ | N/A | Internet Shortcut - URL - Uniform Resource Locator |
| 127 | VMSG | VMware | VMware Application Message Format |
| 128 | VRML | N/A | VRML Format |
| 129 | VSDISCO | Microsoft | DISCO Dynamic Discovery Document |
| 130 | VTT | Crestron Electronics, Inc. | VisionTools Pro-e Project |
| 131 | WAR | Oracle | Java Web Archive |
| 132 | WEBBOOKMARK | Apple | Safari Web Bookmark Format |
| 133 | WEBINTENTS | N/A | Webintents |
| 134 | WEBLOC | Apple | Mac OS X Website Location |
| 135 | WEBP | Google | WebP Image |
| 136 | WML | N/A | Wireless Markup Language Format |
| 137 | WMLC | N/A | Wireless Markup Language Bytecode Document (WAP) |
| 138 | WMLSC | N/A | Wireless Markup Language (WAP) Bytecode Script |
| 139 | XAP | Microsoft | Silverlight Application Package |
| 140 | XBAP | Microsoft | Microsoft Silverlight Application Package |
| 141 | XHT | N/A | XHTML Format |
| 142 | XHTM | N/A | Extensible Hypertext Markup Language Document |
| 143 | XHTML | N/A | Extensible Hypertext Markup Language Format |
| 144 | XPD | Sony | XML Pipeline Document |
| 145 | XSL | N/A | Microsoft SharePoint WorkSpace Groove Database Format |
| 146 | XSLT | N/A | XSL Transformation Format |
| 147 | ZED | BitTorrent, Inc. | BitTorrent Metainfo |
| 148 | ZUL | Potix | ZK User Interface Format |
