Thunder Client vs WhoisJSON API
| Thunder Client | WhoisJSON API | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | Yes | No |
| Paid from | $3/mo | $10/mo |
| Open source | No | No |
| Platforms | extension, Linux, macOS, Windows | — |
| Free plan | Yes | Yes |
| Paid from | $3/user/mo | — |
| API documentation | — | Yes |
Both are listed in Best API Clients. On Specifiction, Thunder Client scores higher on our published basis.