| File Extension: | XSO |
| File Type Description: | Expresso Project File |
| File Type Developer: | Ultrapico |
| Primary Associated Software: | Expresso Project File |
| Primary Software Developer: | Ultrapico |
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 | Expresso Project File by Ultrapico |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .PPTXML | Microsoft Corporation | Uncommon Files | Microsoft Powerpoint XML Presentation File |
| .P50 | Unknown Developer | Uncommon Files | The Player Module |
| .DARBY | Unknown Developer | Uncommon Files | Uncommon File Extension |
| .KRY | Herolab | Uncommon Files | Herolab Krypten |
| .I0 | Unknown Developer | Uncommon Files | Winter Windows Scheduler File |
| .93BF | Unknown Developer | Uncommon Files | Unknown File Type |
| .RHT | Unknown Developer | Uncommon Files | Unknown File Type |
| .STD | Oracle Corporation | Vector Image Files | Apache OpenOffice Drawing Template |
| .D_T | Unknown Developer | Uncommon Files | Eru/erd File |
| .ATOS | Unknown Developer | Uncommon Files | Unknown File Type |
Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall
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*Files that are not supported can be opened in binary format.
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