Softwr

Communication · head to head

LINE WORKS vs Mattermost

LINE WORKS logo

LINE WORKS

Communication

Business chat built on the LINE interface, aimed at Japanese firms whose staff and customers already use LINE

From
Free
Rated
-
Full reviewWebsite
Mattermost logo

Mattermost

Communication

Channel-centric collaboration for secure workflows

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only LINE WORKS has a free tier, so it costs nothing to try first.
  • Each has a real cost: LINE WORKS the external LINE bridge, which is the main reason to choose it, only matters where LINE has consumer penetration, so buyers outside Japan, Taiwan and Thailand are paying for a feature they cannot use.; Mattermost no published pricing on public website; requires sales contact for all tiers
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which LINE WORKS and Mattermost actually diverge.

Attributes where LINE WORKS and Mattermost differ
AttributeLINE WORKSMattermost
Starting priceFreeOn request
Pricing modelPer user per monthquote
Free tierYesNo
PlatformsWeb, iOS, Android, Windows, macOSWeb

Identical on both: user rating (Not yet rated), category (Communication).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in LINE WORKS

  • External LINE messaging
  • Chat and channels
  • Voice and video calls
  • Shared address book
  • Calendar and bulletin board
  • Drive
  • Business email
  • Admin controls

Only in Mattermost

Nothing recorded that LINE WORKS does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

LINE WORKS

  • A Japanese retail or service chain whose customers expect to book and enquire over LINE rather than emailnot Mattermost
  • A clinic, dealership or estate agency that needs customer conversations on LINE but under corporate retention and auditnot Mattermost
  • A Japanese SME under 30 staff that wants managed business chat at no licence cost on the free tiernot Mattermost
  • The Japanese subsidiary of a foreign group that needs a local tool for front-line staff alongside the group standardnot Mattermost

Mattermost

  • Team messaging and collaborationnot LINE WORKS
  • Secure enterprise communicationnot LINE WORKS
  • On-premise or self-hosted deploymentnot LINE WORKS

Where each one falls short

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

LINE WORKS

  • The external LINE bridge, which is the main reason to choose it, only matters where LINE has consumer penetration, so buyers outside Japan, Taiwan and Thailand are paying for a feature they cannot use.
  • The free tier caps total storage at 5GB across the whole organisation, not per user, so a team sharing photos or documents exhausts it within weeks and is pushed onto a paid plan.
  • Business email is only on the Advanced plan at 800 yen per user, so an organisation wanting both chat and mail pays nearly double the Standard rate for every seat including staff who only chat.
  • Developer documentation, support and the integration catalogue are strongest in Japanese, which makes it awkward to administer from a non-Japanese IT function.
  • It has no serious developer or engineering workflow story, so organisations that also run Slack or Teams for technical teams end up maintaining two chat systems and two directories.

Mattermost

  • No published pricing on public website; requires sales contact for all tiers
  • Three tiers (Professional, Enterprise, Enterprise Advanced) have feature differences but no cost transparency
  • User scaling caps differ between tiers without public price justification

Pricing, plan by plan

LINE WORKS

Free
  • FreeFree
    • Up to 30 users
    • 5GB total storage
    • Chat, calls, calendar and address book
  • Standard$450/month
    • Unlimited users
    • 1TB shared storage
    • Annual contract price, 540 yen monthly
  • Advanced$800/month
    • Everything in Standard
    • Business email
    • 100TB shared storage

Mattermost

On request

No published plan breakdown. See the Mattermost review.

Which should you pick?

Choose LINE WORKS if

  • You need external line messaging.
  • You want to start without paying.
  • You work on Web, iOS, Android, Windows, macOS.
  • You also want chat and channels.
LINE WORKS review

Choose Mattermost if

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

Mattermost review

Questions people ask

Is LINE WORKS or Mattermost better?
Neither clearly leads. LINE WORKS starts at Free and Mattermost at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, LINE WORKS or Mattermost?
LINE WORKS has a free tier; the other does not. Paid plans start at Free for LINE WORKS and On request for Mattermost.
Does LINE WORKS or Mattermost run on more platforms?
LINE WORKS runs on Web, iOS, Android, Windows, macOS. Mattermost runs on Web.
Can I use LINE WORKS for free?
Yes. LINE WORKS has a free tier, so you can try it without paying. Mattermost starts at On request.
What is LINE WORKS best used for?
LINE WORKS is most often used for a japanese retail or service chain whose customers expect to book and enquire over line rather than email, a clinic, dealership or estate agency that needs customer conversations on line but under corporate retention and audit, a japanese sme under 30 staff that wants managed business chat at no licence cost on the free tier, the japanese subsidiary of a foreign group that needs a local tool for front-line staff alongside the group standard. Of those, a japanese retail or service chain whose customers expect to book and enquire over line rather than email and a clinic, dealership or estate agency that needs customer conversations on line but under corporate retention and audit are not what Mattermost is typically brought in for.
What can LINE WORKS do that Mattermost cannot?
LINE WORKS covers External LINE messaging, Chat and channels, Voice and video calls, Shared address book.

Answered from the vendors’ own pages

LINE WORKS: Can LINE WORKS really message ordinary LINE users?

Yes. That is its core differentiator and the reason Japanese customer-facing businesses buy it.

Mattermost: What user limits apply to each Mattermost pricing tier?

Professional tier supports maximum 250 users. Enterprise scales to 50,000 concurrent users. Enterprise Advanced scales to 200,000 concurrent users. Exact per-user costs not stated.

Source
LINE WORKS: Is there a free plan?

Yes, up to 30 users with 5GB of total organisation storage.

Mattermost: What support response times are included with each plan?

Professional includes community support plus business hours professional support with next business day response. Enterprise includes 24x7 support with 4-hour response time. Enterprise Advanced includes 24x7 with Premier Support option.

Source
LINE WORKS: Does the Standard plan include email?

No. Business email is Advanced only, at 800 yen per user per month on an annual contract.

Mattermost: How much does Mattermost cost for teams under 250 users?

Pricing for Professional tier with user counts under 250 is not disclosed publicly. Contact Mattermost sales for specific quotes.

Source
LINE WORKS: Is it worth buying outside Japan?

Generally no. Without the consumer LINE bridge it competes poorly against Slack, Teams or Lark on features and ecosystem.

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