eXpress vs Spok Secure Messaging
| eXpress | Spok Secure Messaging | |
|---|---|---|
| Free plan | No | No |
| Free trial | Yes | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Android, extension, iOS, Linux, macOS, self-hosted, Web, Windows | Windows, macOS, iOS, Android |
| Free plan | Yes | — |
| End-to-end encryption | optional | — |
| Guest access | Yes | — |
| File sharing | Yes | Yes |
| Audit logs | Yes | Yes |
| SSO support | Yes | — |
| Mobile apps | both | both |
Both are listed in Best Secure Team Chat Software. On Specifiction, eXpress scores higher on our published basis.