Flock vs Mattermost: Complete Comparison (2026)
Updated: March 7, 20268 min read
VS
Quick Comparison
Flock
Mattermost
Starting Price
$4.50/user/mo
$10/user/mo (cloud)
Free Plan
Yes
Yes
Users
500K+
800K+
Founded
2014
2015
Rating
4.3/5
4.3/5
Best For
SMBs wanting affordable Slack alternative with pro...
Enterprises needing data sovereignty and self-host...
Feature-by-Feature Comparison
FlockMattermost
88Ease of Use88
90Features90
90Value for Money90
81Customer Support81
83Integrations83
84Mobile App84
AI Verdict
Flock leads with a ToolScout Score of 86 vs 86 for Mattermost. Flock is best suited for SMBs wanting affordable Slack alternative with productivity tools, while Mattermost excels for Enterprises needing data sovereignty and self-hosting. Both are strong options in the Team Communication space.
CHOOSE FLOCK IF:
SMBs wanting affordable Slack alternative with productivity tools.
CHOOSE MATTERMOST IF:
Enterprises needing data sovereignty and self-hosting.
Frequently Asked Questions
Is Flock better than Mattermost?
Flock scores 86/100 on ToolScout compared to Mattermost's 86/100. However, the best choice depends on your specific needs. Flock is best for SMBs wanting affordable Slack alternative with productivity tools. Mattermost is best for Enterprises needing data sovereignty and self-hosting.
Does Flock have a free plan?
Yes, Flock offers a free plan. Paid plans start from $4.50/user/mo.
Does Mattermost have a free plan?
Yes, Mattermost offers a free plan. Paid plans start from $10/user/mo (cloud).
Can I migrate from Flock to Mattermost?
Migration between Flock and Mattermost depends on the specific features you use. Both tools are in the Team Communication category. Check each tool's import/export options for data portability before switching.