Team Chat Apps · reliability comparison
Google Chat vs Mattermost: which is more reliable? (2026)
Mattermost is more reliable than Google Chat, scoring 100.0 vs 94.4 out of 100. Over the last 90 days Google Chat reported 1 incident and Mattermost reported 0, with effective uptime of 99.98% and 100% respectively.
Data updated Nov 1, 2026 · How we score
| Metric | Google Chat | Mattermost |
|---|---|---|
| Reliability score | 94.4 | 100.0 |
| Rank (team chat apps) | #9 | #3 |
| Uptime (90 days) | 99.98% | 100% |
| Incidents (90 days) | 1 | 0 |
| Partial / major outages | 0 | 0 |
| Avg time to resolve | 2h 44m | — |
| Outages we detected | 0 | 0 |
| Transparency score | 100/100 | 100/100 |
Where Google Chat and Mattermost differ
- Mattermost reported no incidents in the last 90 days, while Google Chat reported 1.
- Google Chat's longest outage on record lasted 2h 3m (Feb 23, 2026); Mattermost's lasted 21h 40m (Feb 26, 2026).
90-day uptime
Google Chat
Mattermost
- No incidents
- Degraded
- Partial outage
- Major outage
- No data
Recent Google Chat incidents
- Degraded performanceAug 28, 2026 · resolved in 2h 44m
Affected: Google Chat
Recent Mattermost incidents
No incidents reported by Mattermost in the last 90 days.
Other team chat apps to consider
- Element · #1 · 100% uptime
- Flock · #2 · 100% uptime
- Rocket.Chat · #4 · 100% uptime
- Twist · #5 · 100% uptime