| fpv | Flytrex Core Fly Log |
| fpweb | Microsoft Frontpage Disk Based Web Data |
| fpxml | Microsoft Frontpage XML Data |
| fpz | IBM Rational Focal Point Data |
| fq | FASTQ Sequence |
| fqf | FlashFXP Queue Data |
| fqm | Mental Ray Renderer Result Data |
| fqy | FLAMES Command File |
| fr | STK Frequency Information File |
| fr3 | Fractal Explorer 3D Attractor |
| fr3d | FaceGen 3D Model |
| fr4 | Fractal Explorer Quaternion Spot |
| fra | Adobe Acrobat Reader French Language Data |
| fra | Fractal Explorer Animation |
| fra | FractInt Fractal Graphic Data |
| fra | Unreal Engine French Language Data |
| frac | Tinker Fractional Coordinates |
| fract | Free Form Fractional Chemical Data |
| frag | SAM A2M Alignment Data |
| fragment | IBM DB2 Fragment Data |
| fram | Adobe FrameMaker Interchange Format Data |
| frame | Adobe FrameMaker Interchange Format Data |
| frames | xScope Frames File |
| frameset | Frame Painter for LGS Frame Set Data |
| fraw | Autodesk Softimage FCurves RAW Data |
| fraw2 | Autodesk Softimage FCurves RAW Data |
| frb | Microsoft FRx DrillDown Viewer Report Book |
| frc | FLAMES Recorder Output Data |
| frc | Goldmine Report Writer Report |
| frd | Autodesk Simulation Mechanical DDAM Frequency Data |
| frd | Frequency Response Data |
| frd | Mandelbrot Explorer Fractal Definition File |
| frd | Microsoft FRx DrillDown Viewer Enhanced XML |
| frd | Room EQ Wizard Frequency Response Data |
| frdat | Abbyy FineReader Data |
