| .ALX | BlackBerry | Indstillingsfiler | BlackBerry Application Loader XML File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .APD | ACD Systems | Rasterbilledfiler | ACDSee Photo Document | Eclipse | The Eclipse Foundation |
| .AP_ | Google | Udviklerfiler | ADT Android Developer Package | Eclipse | The Eclipse Foundation |
| .BSH | Open Source | Udviklerfiler | BeanShell Script | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .CC | Don Ho | Udviklerfiler | C/C++ Source Code File | Eclipse CDT | The Eclipse Foundation |
| .CLASS | Oracle Corporation | Udviklerfiler | Java Class File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .CXX | Embarcadero Technologies | Udviklerfiler | C++ Main Source Code File Format | Eclipse CDT | The Eclipse Foundation |
| .ERD | Open Source | Datafiler | Entity Relation Diagram | Eclipse | The Eclipse Foundation |
| .ESP | Bethesda Softworks | Spilfiler | Elder Scrolls Plugin File | Eclipse CDT | The Eclipse Foundation |
| .EXL | SysTools Solutions | Datafiler | Export Lister File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .F | The Eclipse Foundation | Udviklerfiler | Fortran Source Code | Photran | The Eclipse Foundation |
| .F03 | The Eclipse Foundation | Udviklerfiler | Fortran Source Code | Photran | The Eclipse Foundation |
| .FPP | The Eclipse Foundation | Udviklerfiler | Fortran Source Code | Photran | The Eclipse Foundation |
| .FTN | The Eclipse Foundation | Udviklerfiler | Fortran Source Code | Photran | The Eclipse Foundation |
| .GROOVY | VMware | Udviklerfiler | Groovy Source Code File | Eclipse | The Eclipse Foundation |
| .H | The Eclipse Foundation | Udviklerfiler | C/C++/Objective-C Header File | Eclipse CDT | The Eclipse Foundation |
| .HISTORY | The Eclipse Foundation | Udviklerfiler | Eclipse IDE Local History Data | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .HXX | The Qt Company | Udviklerfiler | C++ Source Code Header File | Eclipse CDT | The Eclipse Foundation |
| .INDEX | The Eclipse Foundation | Datafiler | Eclipse Help Index | Eclipse CDT | The Eclipse Foundation |
| .IPP | The Eclipse Foundation | Udviklerfiler | Inline Guard Macro File | Eclipse CDT | The Eclipse Foundation |
| .J | Oracle Corporation | Udviklerfiler | Java Source File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .JAV | Oracle Corporation | Udviklerfiler | Java Source Code | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .JAVA | Oracle Corporation | Udviklerfiler | Java Source Code | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .JKS | Oracle Corporation | Kodet filer | Java Keystore File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .JSP | Oracle Corporation | Webfiler | Java Server Page | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .JSPA | Xinox Software | Webfiler | Java Servlet Alias | Eclipse | The Eclipse Foundation |
| .JSPF | Oracle Corporation | Udviklerfiler | Java Server Page Fragment | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .KEYSTORE | Oracle Corporation | Kodet filer | Java Keystore File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .KM3 | The Eclipse Foundation | Udviklerfiler | Kernel MetaMetaModel File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .KS | Debian | Systemfiler | Kickstart File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .LAUNCH | Rogue Wave | Indstillingsfiler | Zend Studio Debugger Configuration Data | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .NSH | Nullsoft | Udviklerfiler | NSIS Header File | Eclipse | The Eclipse Foundation |
| .PHL | Amazon | eBogsfiler | Kindle Popular Highlights File | Eclipse | The Eclipse Foundation |
| .PHP | Panic | Webfiler | PHP Source Code File | Eclipse CDT | The Eclipse Foundation |
| .PHP2 | Open Source | Webfiler | PHP 2 Web Page | Eclipse | The Eclipse Foundation |
| .PREFS | VectorStorm | Spilfiler | MMORPG Tycoon Preferences File | Eclipse CDT | The Eclipse Foundation |
| .PROJECT | The Eclipse Foundation | Udviklerfiler | Eclipse Project Description File | Eclipse | The Eclipse Foundation |
| .PROPERTIES | Mojang | Spilfiler | Minecraft Properties File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .SMA | Don Ho | Udviklerfiler | C/C++ Source Code File | Eclipse CDT | The Eclipse Foundation |
| .SYM | The Eclipse Foundation | Udviklerfiler | Symbols File | Eclipse CDT | The Eclipse Foundation |
| .TLD | The Eclipse Foundation | Udviklerfiler | Tag Library Descriptor File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .UML | Visual Object Modelers | Udviklerfiler | UML Data Object Model | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .UMLCLASS | The Eclipse Foundation | Udviklerfiler | UML Class Model | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .XBD | Xerox | Datafiler | DocuWorks Binder File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .XMI | Object Management Group (OMG) | Datafiler | XML Metadata Interchange File | Eclipse IDE for Java Developers | The Eclipse Foundation |
| .ZMS | Check Point Software Technologies Ltd. | Datafiler | ZoneAlarm Mailsafe Renamed Data | Eclipse | The Eclipse Foundation |
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