Discourse vs Slack Comparison 2026
Both cover community platforms. Here is what separates them on price, billing, what you can take with you, and coverage.
Forum software, hosted or run yourself
Channels for a community that outgrew a group chat
At a glance
- Slack starts cheaper, at $8.75.
- Both have a genuinely free tier.
Side by side
Discourse | Slack | |
|---|---|---|
| Starting price (they differ) | From $100 | From $8.75 |
| Pricing model | Free plan, paid tiers | Free plan, paid tiers |
| Free tier | Yes | Yes |
| Billing | Monthly or annual | Monthly or annual |
| Free trial | Not stated | Not stated |
| API | Yes | Yes |
| Data export | Everything, in an open format | Not stated |
| Their cut | Not stated | Not stated |
| Runs on (they differ) | Web, Linux |
Shaded rows are where the two answers disagree and both listings have answered. A row where one side has not stated a fact is left plain, because silence is not a difference.
Discourse
Forum software, hosted or run yourself
Discourse is the forum the internet settled on: threaded, searchable, indexed by Google, and open source, so a community that outgrows the hosted plans can take the database and run it on its own server. That escape hatch is the argument for it over anything closed. The hosted pricing starts where a hobby project stops, and self-hosting swaps the bill for a sysadmin.
Our note
The reason to choose this over Circle or Mighty Networks is that the conversation is public and indexed, which makes the forum an asset rather than a cost. The reason not to is that it is a forum, and an audience raised on Discord will find it slow.
Only on this side
- Covers website builders
Slack
Channels for a community that outgrew a group chat
Slack organises a community into channels, threads and searchable history, which is what a paid membership community usually needs once a Discord server stops being enough. The free plan keeps ninety days of messages and ten app connections, and that history limit is what pushes most groups onto a paid plan rather than any feature. Guests from outside the workspace can be given a single channel. Paying by seat means a large free community costs more here than on software priced per workspace.
Ratings are the average of reviews readers left. The facts are stated by each tool’s own listing and are not verified by CloutStack. How we make money.