| File Extension: | RAI |
| File Type Description: | SPEFO Data |
| File Type Developer: | Astronomical Institute of the Czech Academyof Sciences |
| Primary Associated Software: | SPEFO |
| Primary Software Developer: | Astronomical Institute of the Czech Academyof Sciences |
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Release of the SPEFO software program prompted the development of the SPEFO Data file type by Astronomical Institute of the Czech Academyof Sciences. According to our internal data, SPEFO Data files are most popular with users in Brazil, with a majority of them running Windows 10. A vast majority of these users are opting to use Google Chrome as their preferred internet browser.
 | SPEFO by Astronomical Institute of the Czech Academyof Sciences |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | DOS |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .RRI | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Stellar Spectra Analysis Data |
| .RV | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Stellar Spectra Analysis Data |
| .EQW | Petr Skoda | Data Files | SPEFO Stellar Spectra Analysis File |
| .RFI | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Stellar Spectra Analysis Data |
| .HAL | HansaWorld | Uncommon Files | HansaWorld Enterprise HAL Code File |
| .MEQ | Corel | Data Files | Corel WordPerfect Macro Editor Print Queue File |
| .TR8 | National Instruments | Data Files | SPICE Transient Analysis Output Data File |
| .UZN | Apache Software Foundation | Data Files | Tesseract-Migneuzn Tool Output File |
| .ZNS | Check Point Software Technologies Ltd. | Data Files | ZoneAlarm Mailsafe Renamed Data |
| .D02 | Cadence Design Systems | Data Files | MicroSim PCBoard NC Drill Data File |
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