Mattermost vs Slack
| Mattermost | Slack | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | — | $8.75/mo |
| Open source | No | No |
| Platforms | Android, iOS, Linux, macOS, self-hosted, Web, Windows | Android, iOS, Linux, macOS, Web, Windows |
| Free plan | Yes | Yes |
| Channels | Yes | Yes |
| Guest access | Yes | Yes |
| Message history | unlimited | limited |
| Integrations | GitHub, GitLab, Jira, Microsoft Teams, Microsoft 365, Outlook, ServiceNow, Zoom, Pexip, Splunk, Zapier | Salesforce, Jira, Google Drive, ChatGPT, Asana, Miro, Notion, Zoom, GitHub, GitLab, PagerDuty, Box, Dropbox, Zendesk, Freshdesk, HubSpot |
| Supported platforms | web, Windows, macOS, Linux, iOS, Android, API, self-hosted | web, windows, macos, linux, ios, android, api |
| Paid from | — | $7.25/user/mo |
Both are listed in Best Team Chat Apps, Best Team Collaboration Software. On Specifiction, Slack scores higher on our published basis.