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Software · head to head

Mattermost vs OneSignal

Mattermost logo

Mattermost

Software

Channel-centric collaboration for secure workflows

From
On request
Rated
-
Full reviewWebsite
O

OneSignal

Software

Customer engagement and messaging, without the complexity

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only OneSignal has a free tier, so it costs nothing to try first.
  • Each has a real cost: Mattermost no prices are published for any of the three paid tiers (Professional, Enterprise, Enterprise Advanced); all require contacting sales; OneSignal free plan email sends cap at 10,000 per month and web push is capped at 10,000 subscribers per send, per onesignal.com/pricing (Aug 2026)

Where they differ

Only the attributes on which Mattermost and OneSignal actually diverge.

Attributes where Mattermost and OneSignal differ
AttributeMattermostOneSignal
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes

Identical on both: platforms (Web), user rating (Not yet rated), category (Unknown).

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Mattermost

  • No prices are published for any of the three paid tiers (Professional, Enterprise, Enterprise Advanced); all require contacting sales
  • Professional is capped at a maximum of 250 users, forcing a move to Enterprise for larger teams
  • Licenses are sold only as prepaid annual subscriptions, and organizations that exceed their licensed seat count must purchase additional seats on a prorated quarterly basis

OneSignal

  • Free plan email sends cap at 10,000 per month and web push is capped at 10,000 subscribers per send, per onesignal.com/pricing (Aug 2026)
  • Professional and Enterprise plans require custom annual contracts with no published rate, per onesignal.com; SMS/RCS messaging and dedicated IPs are gated behind the Professional tier

Pricing, plan by plan

Mattermost

On request

No published plan breakdown. See the Mattermost review.

OneSignal

Free

No published plan breakdown. See the OneSignal review.

Which should you pick?

Choose Mattermost if

Nothing in the data separates Mattermost from OneSignal on the points above - pick on price and on how each one feels to use.

Mattermost review

Choose OneSignal if

  • You want to start without paying.
OneSignal review

Questions people ask

Is Mattermost or OneSignal better?
Neither clearly leads. Mattermost starts at On request and OneSignal at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Mattermost or OneSignal?
OneSignal has a free tier; the other does not. Paid plans start at On request for Mattermost and Free for OneSignal.
Does Mattermost or OneSignal run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use OneSignal for free?
Yes. OneSignal has a free tier, so you can try it without paying. Mattermost starts at On request.
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Related pages

More on Mattermost

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