Team Chat Apps · 2026 reliability ranking

Most Reliable Team Chat Apps (2026)

We ranked 16 team chat apps by real-world reliability over the last 90 days, using 31 status page incidents and our own around-the-clock uptime checks. In many small businesses the team chat app is where shifts get covered, customer questions get escalated and files change hands, so an outage cuts people off from each other mid-task. Messages that fail to send or arrive late lead to missed handoffs and duplicated work, and integrations that post alerts or orders into channels go quiet without anyone noticing. Message delivery, notifications and file uploads all run through the vendor's cloud, which makes its service history worth checking before the whole team moves in.

Last updated Nov 1, 2026 · How we score

Most reliable team chat app: Element (score 100.0/100). Highest uptime: Element (100%). Fewest incidents: Element (0 in 90 days). Fastest to resolve: Discord (avg 1h 34m).

#	Vendor	Score	Uptime (90d)	Incidents	Avg resolve	Transparency	Status now
1	ElementElement is a team messaging app built on the open Matrix protocol, available as hosted Element Cloud or self-hosted.	100.0	100%	0	—	100/100	Operational
2	FlockFlock is a team messaging app with channels, direct messages and built-in video calls.	100.0	100%	0	—	100/100	Operational
3	MattermostMattermost is an open-source team messaging platform available self-hosted or as Mattermost Cloud.	100.0	100%	0	—	100/100	Operational
4	TwistTwist is a thread-based team messaging app from Doist, the maker of Todoist.	100.0	100%	0	—	100/100	Operational
5	ZulipZulip is an open-source team chat app organised by topic threads, available as Zulip Cloud or self-hosted.	100.0	100%	0	—	100/100	Operational
6	RyverRyver is a team chat and task management app from Cloverleaf Networks.	99.6	100%	1	—	100/100	Operational
7	WireWire is an end-to-end encrypted team messaging and calling app from Wire Swiss, based in Zug, Switzerland.	99.6	100%	1	—	100/100	Operational
8	Google ChatGoogle Chat is the team messaging app included in Google Workspace.	94.4	99.98%	1	2h 44m	100/100	Operational
9	Webex MessagingWebex Messaging is the team messaging part of the Cisco Webex App.	89.2	100%	1	—	100/100	Operational
10	DiscordDiscord is a San Francisco-based voice, video and text chat platform organised into servers and channels.	62.0	99.40%	19 (14 major)	1h 34m	100/100	Operational
11	SlackSlack is the team messaging platform owned by Salesforce.	41.6	97.89%	8 (4 major)	15h 28m	100/100	Operational

Team Chat Apps reliability at a glance

Across the 11 ranked team chat apps, average 90-day uptime is 99.75%. Reliability scores range from 100.0 (Element) to 41.6 (Slack).
Together they published 31 incidents in the last 90 days, 18 of them partial or major outages.
Element, Flock, Mattermost, Twist, Zulip reported no incidents at all in that time.
The typical vendor takes 2h 44m to resolve an incident. Discord is fastest, at 1h 34m on average.
Discord reported the most incidents (19 in 90 days).

What to check before you choose a team chat app

Look at which components fail most often. Message delivery, sign-in and push notifications matter far more than search, file previews or AI features.
Check what the mobile and desktop apps do during an outage: whether you can still read cached history and whether unsent messages queue and retry or are lost.
If alerts, orders or bookings reach your team through chat integrations or webhooks, check incidents on the API and integrations components, since those failures are silent.
Subscribe to the vendor's status page and agree on a fallback channel, such as SMS or email, for urgent messages when chat is down.