Flock vs Mattermost: Complete Comparison (2026)
In comparing Flock and Mattermost in 2026, Mattermost is the stronger choice for enterprises needing data sovereignty and self-hosting due to full data control. Flock excels for smbs wanting affordable slack alternative with productivity tools with built-in productivity apps. Flock offers Channels, Video calls, Polls starting at $4.50/user/mo with a free plan. Mattermost provides Self-hosted deployment, Channels, DevOps integrations from $10/user/mo (cloud) with a free tier. For teams prioritizing value, Mattermost delivers a hiltonsoftware Score of 74/100. Flock and Mattermost compete in the team communication segment of the SaaS market, where cloud-native solutions, API integrations, and workflow automation drive enterprise and SMB adoption. Other leading team communication tools include Slack, Microsoft Teams, Discord. Flock serves 500K+ users globally (founded 2014) while Mattermost reports 800K+ active users (founded 2015).
Flock vs Mattermost at a Glance
What are the main differences between Flock and Mattermost?
Flock and Mattermost differ across ease of use, features, value, support, integrations, scalability, and learning curve. Mattermost leads in 2 of 7 categories.
What are the pros and cons of Flock vs Mattermost?
Which is better, Flock or Mattermost?
After evaluating Flock and Mattermost across features, pricing, integrations, and user satisfaction, Mattermost earns a higher hiltonsoftware Score of 74/100 versus Flock at 71/100. Mattermost stands out for "full data control" and "strong security features". Flock delivers competitive advantages in "built-in productivity apps", making Flock a viable alternative.
Both Flock and Mattermost offer free plans. Flock paid plans start at $4.50/user/mo while Mattermost begins at $10/user/mo (cloud). ROI depends on which features justify upgrading.
Bottom line: Choose Flock for smbs wanting affordable slack alternative with productivity tools. Choose Mattermost for enterprises needing data sovereignty and self-hosting. Both Flock and Mattermost are established team communication platforms.
SMBs wanting affordable Slack alternative with productivity tools.
Enterprises needing data sovereignty and self-hosting.
Flock vs Mattermost: Frequently Asked Questions
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Reviewed by Alex Chen, SaaS & Productivity Analyst. Last updated: 2026-04-24. Pricing verified: March 2026.
Read our scoring methodology to understand how the hiltonsoftware Score is calculated.