| File Extension: | SPG |
| File Type Description: | TCP Optimizer Backup File |
| File Type Developer: | Speed Guide, Inc. |
| Primary Associated Software: | TCP Optimizer |
| Primary Software Developer: | Speed Guide, Inc. |
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Speed Guide, Inc. created the TCP Optimizer Backup File (SPG) file for the TCP Optimizer software series. Data from our web servers (annonymous users) show that SPG files are most popular in United States and are often used by Windows 10. Statisically, these users are most likely running the Google Chrome internet browser.
 | TCP Optimizer by Speed Guide, Inc. |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .ICF | Zoom Telephonics | Backup Files | Zoom Router Configuration File |
| .RGU | Kroll Ontrack | Backup Files | Data Recovery Software File |
| .P18 | Peter B. Clements | Backup Files | PAR Recovery Volume |
| .GHS | Symantec Corporation | Backup Files | Norton Ghost Image Segment Backup File |
| .AS4 | askSam Systems | Backup Files | AskSam Backup File |
| .NPP | Nova Development | Page Layout Files | Art Explosion Publisher Pro Document |
| .BACKUP DEFINITION FILE | Willowsoft Creek Software | Backup Files | Backup Definition File |
| .XLK | Microsoft Corporation | Backup Files | Excel Backup File |
| .OFB | Oxgen Forensics | Backup Files | Oxygen Forensic Suite Backup |
| .NCO | Nero AG | Backup Files | Nero BackItUp File |
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