Mattermost vs Flock
Mattermost is open-source, self-hosted team messaging platform for organizations that need data sovereignty, while Flock is team messaging with built-in to-dos, polls, notes, and file sharing. Mattermost is open source and can be self-hosted, giving you full control over your data. Mattermost is built for teams that need self-hosted, privacy-first messaging, whereas Flock targets teams wanting messaging with built-in productivity tools.
Free
| Feature | Mattermost | Flock |
|---|---|---|
| Free tier available | ✓ | ✓ |
| Open source | ✓ | — |
| Channels | ✓ | — |
| Compliance | ✓ | — |
| Integrations | ✓ | — |
| Notes | — | ✓ |
| Playbooks | ✓ | — |
| Polls | — | ✓ |
| Self-Hosted | ✓ | — |
| To-Dos | — | ✓ |
| Video Calls | — | ✓ |
Pricing: Both Mattermost and Flock are free. You can try both without spending a dollar.
Feature gaps: Mattermost offers Channels, Compliance and Integrations that Flock lacks. Flock brings Notes, Polls and To-Dos that Mattermost does not have.
Team fit: Mattermost is geared toward mid-size teams teams, while Flock is aimed at small teams teams. Pick the one that matches where your team is today and where it is headed — migrating tools later is always painful.
Open source: Mattermost is open source, meaning you can self-host, audit the code, and avoid vendor lock-in. Flock is proprietary — you are trusting the vendor with your data and uptime.
Where each tool shines: Mattermost's biggest strengths are: self-hosted — full control over your data. open source with active community. Flock's biggest strengths are: lightweight to-do lists keep daily tasks front and center without project-management overhead. includes polls as a core feature, purpose-built for team communication workflows.
Watch out for: With Mattermost, users commonly note that requires server management if self-hosting. With Flock, the main complaint is that free plan exists but key features are locked behind the paid upgrade.
choose Mattermost if
- Your profile matches its sweet spot: teams that need self-hosted, privacy-first messaging
- You need self-hosting, data sovereignty, or the ability to audit source code
- You specifically need Channels and Compliance
- You care about open source with active community
- Your team size fits the mid-size teams profile Mattermost is designed for
choose Flock if
- Your profile matches its sweet spot: teams wanting messaging with built-in productivity tools
- You specifically need Notes and Polls
- You care about includes polls as a core feature, purpose-built for team communication workflows
- Your team size fits the small teams profile Flock is designed for
- The free tier works for you: free for up to 20 users
frequently asked
What is the difference between Mattermost and Flock?
Mattermost is open-source, self-hosted team messaging platform for organizations that need data sovereignty, while Flock is team messaging with built-in to-dos, polls, notes, and file sharing. Mattermost is open source and can be self-hosted, giving you full control over your data. Mattermost is built for teams that need self-hosted, privacy-first messaging, whereas Flock targets teams wanting messaging with built-in productivity tools.
Should I use Mattermost or Flock?
Mattermost gives you open source and self-hosting; Flock is a managed service. Which trade-off works for you?
When should I choose Mattermost over Flock?
Choose Mattermost if Your profile matches its sweet spot: teams that need self-hosted, privacy-first messaging; You need self-hosting, data sovereignty, or the ability to audit source code; You specifically need Channels and Compliance; You care about open source with active community; Your team size fits the mid-size teams profile Mattermost is designed for.
When should I choose Flock over Mattermost?
Choose Flock if Your profile matches its sweet spot: teams wanting messaging with built-in productivity tools; You specifically need Notes and Polls; You care about includes polls as a core feature, purpose-built for team communication workflows; Your team size fits the small teams profile Flock is designed for; The free tier works for you: free for up to 20 users.
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