Automate Basics

Slack vs Google Chat vs Discord vs Mattermost

Pick up to 4 tools and see their free plans, entry prices, platforms and limits in one table. Every fact comes from each vendor's own pages, checked 7 November 2026.

Compared on
Slack

Free plan · from $7.25/user/mo

Google Chat

Free trial · from €6.80/user/mo

Discord

See pricing

Mattermost

Contact sales

What it isTeam messaging built around channels, with huddles, canvases and workflow automationDirect messages and spaces inside Google Workspace, with Meet and Gemini built inGroup chat with text, voice and video, built around gaming and community serversSelf-hosted team messaging and workflow platform for security-sensitive organizations
Free planFree plan keeps 90 days of message history, allows up to 10 app integrations, and limits huddles and Slack Connect external messages to 1:1NoNoNo
Cheapest paid plan$7.25/user/mo billed annually (Pro)Slack pricing€6.80/user/mo billed annually (Google Workspace Business Starter (includes Chat))Google Chat pricingNot publishedDiscord pricingNot publishedMattermost pricing
What it coversList prices. Slack also lists a 50% promotional price for the first 3 months on monthly Pro billing for teams that buy online within 7 days of creating the workspace. Members active in a 28-day period are billed.Chat has no separate price; it comes with a Workspace subscription. Price shown in EUR, excluding tax, with a 1-year commitment. Google also lists a 50% intro price (EUR 3.40) for a limited period.Not statedNot stated
Free trialNone stated14-day trial of Google Workspace for people not already using itNone statedA 1-hour trial environment is offered from the Try Mattermost menu; no longer trial terms were stated
PlatformsWeb, Windows, Mac, iOS, AndroidWeb, iOS, AndroidWeb, Windows, Mac, iOS, AndroidWeb, Windows, Mac, Linux, iOS, Android, Self-hosted
Integrations (vendor's figure)Over 2,600 apps in the Slack MarketplaceNot statedNot statedNot stated
Open sourceNoNoNoYes, self-hostable
Good for
  • Teams that want channel-based conversation with a large set of connected apps
  • Companies that need to message people at other organizations through Slack Connect
  • Workspaces that want to automate approvals and routine requests without code
  • Teams that already use Google Workspace for email, Docs and Meet
  • Organizations that want chat without paying for a separate messaging tool
  • Teams building small custom chat apps with webhooks or AppSheet
  • Gaming groups and friend communities
  • Open communities and fan groups that want voice and text in one place
  • Creators and developers building a public community around a project
  • Government and defense teams that must keep chat on their own infrastructure
  • Engineering and security operations teams running incident response in chat
  • Regulated companies that need retention and audit controls
Watch out for
  • The Free plan keeps only 90 days of message history and 10 apps
  • Group huddles and group external messages need a paid plan
  • Single sign-on needs Business+ and above
  • Sold only as part of a Google Workspace subscription, not on its own
  • Some features are available only on Business and Enterprise plans
  • Whether personal Google accounts can use Chat free was not stated on the pages read
  • Aimed at gaming and social use; Discord describes itself as a platform for connections around playing games
  • Nitro adds personal perks and is not a team plan with admin or compliance controls
  • The pages read do not state business pricing or enterprise controls
  • Prices are not published; the pricing page directs buyers to sales
  • Licenses are sold as prepaid annual per-seat subscriptions, with each server needing its own license
  • Marketing focuses on high-security sectors, so it may be more than a small team needs
Made bySlack Technologies (Salesforce)GoogleDiscordMattermost

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

Every tool in team chat apps is on its category page, with the written head-to-heads on Compare.