Mattermost vs Slack
Mattermost
mattermost.comSlack
slack.comSide by side
| Figure | Mattermost | Slack |
|---|---|---|
| Price from | — | $8.75/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 4 | 4 |
| Spec score · Team chat apps | 7.4 (#55) | 9.5 (#2) |
| Spec score · Team Collaboration Software | 7.0 (#25) | 8.8 (#9) |
| Channels | Yes | Yes |
| Free plan | Yes | Yes |
| Guest access | Yes | Yes |
| 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 |
| Message history | unlimited | limited |
| Supported platforms | web,Windows,macOS,Linux,iOS,Android,API,self-hosted | web,windows,macos,linux,ios,android,api |
Plans
Mattermost
- ProfessionalPrice not published
- ProfessionalPriced on request
- EnterprisePrice not published
- EnterprisePriced on request
In their own words
Mattermost
Mattermost has no write-up on Specifiction yet; its figures are above.
Slack
Slack is a team collaboration platform organized around messages, channels and connected apps. It supports guest access and integrations including Salesforce, Jira, Google Drive, Asana, Zoom, GitHub and Notion; its App Directory offers over 2,600 apps. Slack runs on the web, Windows, macOS, Linux, iOS and Android, and supports an API. The free plan is ₹0 and free forever, with 90 days of searchable message history and up to ten apps. Free users can hold one-to-one audio and video meetings with screen sharing, and send one-to-one external messages through Slack Connect. Paid plans offer unlimited message history and group external messaging with up to 250 organizations. Annual billing starts at $7.25 per user per month; monthly Pro is $8.75 per month. Workflow Builder automates routine tasks without coding. AI features include summaries, search, daily recaps, file summaries, Slackbot and workflow generation. Slack encrypts data at rest and in transit by default; security controls include two-factor authentication, access logs, SSO, device management and data loss prevention.