| File Extension: | CTF |
| File Type Description: | WhereIsIt Catalog File |
| File Type Developer: | Interscape |
| Primary Associated Software: | WhereIsIt |
| Primary Software Developer: | Interscape |
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WhereIsIt Catalog File files are the most popular type of files to carry the CTF file extension, originally developed by AVG Technologies for AVG Antivirus. Visitor data analysis shows that these WhereIsIt Catalog File files are typically seen on Windows 10 user machines from China. In most cases, these users are surfing the internet using the Google Chrome browser.
 | WhereIsIt by Interscape |
 | AVG Antivirus by AVG Technologies |
 | ECMG Filematica by ECMG |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Android |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .MPO | CyberLink | Raster Image Files | CIPA Multi Picture Object File |
| .MAE | Interscape | Game Files | My Avatar Editor Character File |
| .DFP | Blackmagic Design | Plugin Files | Fusion Plugin File |
| .EWT | Interscape | GIS Files | EWView Trace Data |
| .BACK | Interscape | Data Files | RMCProfile Coefficient |
| .QT | Apple | Video Files | Apple QuickTime Movie |
| .MAX | Autodesk, Inc. | 3D Image Files | 3ds Max Scene File |
| .ES | Interscape | Audio Files | ECHOSPEECH File |
| .MHT | Various Developers | Web Files | MHTML Web Archive |
| .NOKIA | Nokia | Audio Files | Nokia Proprietary Ringtone |
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