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| Extension | File Type Developer | File Category | File Type Description | Software | Software Developer |
|---|---|---|---|---|---|
| .ASHX | Microsoft Corporation | Web Files | ASP.NET Web Handler File | Citrio | The Catalina Group |
| .ASPX | Microsoft Corporation | Web Files | Active Server Page Extended ASP.NET Script | Citrio | The Catalina Group |
| .AXD | Microsoft Corporation | Web Files | ASP.NET Web Handler File | Citrio | The Catalina Group |
| .B1 | The Catalina Group | Compressed Files | B1 Compressed Archive | B1 Free Archiver | The Catalina Group |
| .DML | Sybase, Inc | Web Files | DynaScript File | Citrio | The Catalina Group |
| .JHTML | Oracle Corporation | Web Files | Java HTML Web Page | Citrio | The Catalina Group |
| .JSPA | Xinox Software | Web Files | Java Servlet Alias | Citrio | The Catalina Group |
| .LASSO | LassoSoft | Web Files | Lasso Database-Driven Web Page | Citrio | The Catalina Group |
| .PHTM | The Catalina Group | Web Files | PHP-Based Web Page | Citrio | The Catalina Group |
| .PIZ | Winrar | Compressed Files | Zipped File | B1 Free Archiver | The Catalina Group |
| .PSP | Corel Corporation | Raster Image Files | PaintShop Pro Image | Citrio | The Catalina Group |
| .R00 | Rocky Sand Studio | Compressed Files | WinRAR Compressed Archive | B1 Free Archiver | The Catalina Group |
| .RAR | Rocky Sand Studio | Compressed Files | WinRAR Compressed Archive | B1 Free Archiver | The Catalina Group |
| .RHTML | Yukihiro “Matz” Matsumoto | Web Files | Ruby HTML Web Page | Citrio | The Catalina Group |
| .RMT | The Catalina Group | System Files | Router Firmware File | Citrio | The Catalina Group |
| .S7Z | Igor Pavlov | Compressed Files | 7-Zip Compressed File | B1 Free Archiver | The Catalina Group |
| .ZIP | Winrar | Compressed Files | Zipped File | B1 Free Archiver | The Catalina Group |
| .ZIPX | Corel | Compressed Files | Extended Zip File | B1 Free Archiver | The Catalina Group |
| .ZPI | Winrar | Compressed Files | Zipped File | B1 Free Archiver | The Catalina Group |
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