The most recent release of Nisus Thesaurus is version 1.2.2:
| Nisus Thesaurus 1.2.2 | download, mirror | macOS 10.15 - macOS Big Sur | release notes | 2020.12.31 |
We generally do not recommend using previous versions of Nisus Thesaurus. However, should you need an older version, you may download it below.
| Version | Download | Requires | Release Notes | Release Date |
| Nisus Thesaurus 1.2.1 | download, mirror | macOS 10.15 - macOS Big Sur | release notes | 2020.12.22 |
| Nisus Thesaurus 1.2 | download, mirror | OS X 10.11 - macOS Big Sur | release notes | 2019.08.22 |
| Nisus Thesaurus 1.1.4 | download, mirror | OS X 10.10 - macOS Big Sur | release notes | 2018.06.25 |
| Nisus Thesaurus 1.1.1 | download, mirror | OS X 10.6.6 - macOS 10.12 | release notes | 2012.07.26 |
| Nisus Thesaurus 1.1 | download, mirror | OS X 10.4.11 - OS X 10.6.5 | release notes | 2011.10.05 |