| FTK Version | Processing Engine |
| 3.2 | 3.2 |
| 3.3 | 3.3 |
| 3.4 | 4.0 |
| 4.0 | 4.1 |
| 4.1 | 4.2 |
| 4.2 | 10.4 |
| 5.0 | 10.6 |
| 5.1 | 10.7 |
| 5.2 | 10.8 |
| 5.3 | 10.9 |
| 5.4 | 10.10 |
| 5.5 | 10.11 |
| 5.6 | 10.12 |
| 6.0 | 10.14 |
| 6.1 | 10.15 |
| 6.2 | 10.16 |
| 6.3 | 10.17 |
| 6.4 | 10.18 |
6.5 (Enterprise-only) | 10.19 |
| 7.0 | 10.20 |
| 7.2 | 10.22 |
| 7.3 | 10.23 |
| 7.4 | 10.24 |
| 7.5 | 10.25 |
| 7.6 | 10.26 |