| 1. | .an | Text file (Sterling Software, Groundworks COOL Business Team Model) |
| 2. | .anc | List of pattern colors (Canon Computer Pattern Maker) |
| 3. | .and | Animation (AniData) |
| 4. | .ani | Animated cursor (Windows 95/NT) ◊ Animation (Presidio - many) |
| 5. | .anm | Animation (Deluxe Paint Animator) |
| 6. | .ann | Help annotations (Windows 3.x) |
| 7. | .ans | Animation (graphics or text) ◊ Ascii text with ANSI character set (NewWave Write) |
| 8. | .ant | Saved game data (SimAnt) |