| Name | Author | Levels |
|---|---|---|
| Firefox 37 | Firefox | 20 |
| Firefox 38 | Firefox | 20 |
| Firefox 39 | Firefox | 20 |
| Firefox 40 | Firefox | 20 |
| Firefox 41 | Firefox | 20 |
| Firefox 42 | Firefox | 20 |
| Firefox 43 | Firefox | 20 |
| Firefox 44 | Firefox | 20 |
| Firefox 45 | Firefox | 20 |
| Firefox 46 | Firefox | 20 |
| Firefox 47 | Firefox | 20 |
| Firefox 48 | Firefox | 20 |
| Firefox 49 | Firefox | 20 |
| Firefox 50 | Firefox | 20 |
| Firefox 51 | Firefox | 20 |
| Firefox 52 | Firefox | 20 |
| Firefox 53 | Firefox | 20 |
| Firefox 54 | Firefox | 20 |
| Firefox 55 | Firefox | 20 |
| Firefox 56 | Firefox | 16 |
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