| Name | Author | Levels |
|---|---|---|
| Firefox 20 | Firefox | 16 |
| Firefox 21 | Firefox | 16 |
| Firefox 22 | Firefox | 16 |
| Firefox 23 | Firefox | 16 |
| Firefox 24 | Firefox | 16 |
| Firefox 25 | Firefox | 16 |
| Firefox 26 | Firefox | 16 |
| Firefox 27 | Firefox | 16 |
| Firefox 28 | Firefox | 16 |
| Firefox 29 | Firefox | 16 |
| Firefox 30 | Firefox | 16 |
| Firefox 31 | Firefox | 16 |
| Firefox 32 | Firefox | 20 |
| Firefox 33 | Firefox | 20 |
| Firefox 34 | Firefox | 20 |
| Firefox 35 | Firefox | 20 |
| Firefox 36 | Firefox | 20 |
| Firefox 37 | Firefox | 20 |
| Firefox 38 | Firefox | 20 |
| Firefox 39 | Firefox | 20 |
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