Every question answered once. Findable forever.
Turn questions, AMAs and live sessions into a searchable knowledge base. Free under 50 members, no card needed.
Founders cohort Search answersKeep one dated page with New, Improved and Fixed tags, and link each entry to its help article.
Chat is where good answers go to disappear.
Your community already answers hard questions every week. Then the thread scrolls away, the free plan hides it, and someone asks again.
of message history on Slack's free plan. Older messages are hidden.
Source: Slack pricing, checked Sept 2026
after which free-workspace messages are deleted, since August 2024.
Source: Zulip, a Slack competitor
of communities run on chat-first tools: Slack, WhatsApp or Discord.
Source: CMX 2026 data via Bettermode
Three moves. One knowledge base.
Open a Flow
A Flow is your community space. Set roles, invite members by link or SSO, and brand it. Free while you are under 50 members.
Start a Wave
Ask a question, host an AMA, schedule office hours or go live. Every Wave has a type, tags and its own rules.
Keep the answer
The asker marks the best answer. Solved Waves join the searchable knowledge base, so the next person finds it in seconds.
What your members actually get.
Any Wave can go live
Members RSVP and raise a hand. A moderator opens the call in one click, with breakouts and polls when you need them.
Search what was solved
Best answers rise to the top of search, so new members find last year's answer before they ask again.
Typed Waves
Question, discussion, AMA, workshop, session, announcement. Each type has its own flow.
Roles you define
Profile types such as speaker, mentor or sponsor, each with its own permissions.
Direct messages
One-to-one and group DMs scoped to the community, with reactions, edits and pins.
Pages for sponsors, speakers and exhibitors
Each gets a branded page with a wall, sessions, team and contact button, plus visit analytics for the owner.
"Stop by for the API teardown at 2pm. Questions welcome here any time."
Embed it on your site
Mount Dium inside your own domain with SSO, so members never leave your site.
Developer docsBuilt for groups where every answer matters.
Cohort programs
Each cohort's best answers carry forward to the next one, instead of dying in a group chat.
See howConferences and events
Collect questions before the event, run live Q&A on the day, keep the answers after.
See howSponsors and exhibitors
Booth pages with their own wall, sessions and leads that keep working after the expo closes.
See howInternal teams
Move repeat questions out of DMs and into one place new hires can search.
See howAlumni networks
Let graduates answer each other across years, with roles you control.
See howOpen source
Support threads with marked answers that search engines and newcomers can find.
See howPricing that does not charge per seat.
Free while you are under 50 members. After that, one flat monthly price per community, from $29 for 50 members to $299 for unlimited.
- Every Wave type, live sessions and the knowledge base on every plan
- Priority support, custom branding and email invites on Pro
- No card needed to start. Upgrade when your 50th member joins
Know exactly who sees what.
We publish how Dium handles your community's data in plain words, including what we do not do yet.
Security
Encryption in transit, HttpOnly session cookies, rate limits and a vulnerability disclosure policy. No certifications we do not hold.
Who sees what
A plain table of what visitors, members, moderators, sponsors and Dium staff can see.
Subprocessors
Every vendor that touches member data, what they do and where.
Questions people ask us first.
What is Dium?
Dium is a community Q&A and knowledge platform. You open a Flow (a community space), members start Waves (questions, AMAs, workshops, live sessions), and the best answer on each Wave is marked. Solved Waves become a searchable knowledge base, so the community stops repeating itself.
Is Dium really free?
Yes, while your Flow has fewer than 50 members. That includes every Wave type, live sessions, roles and search. At 50 members you move to a paid plan starting at $29 a month. See all plans.
How is this different from Slack or Discord?
Chat tools are built for the conversation happening now. Dium is built for the answer you need later: every Wave has a type, an owner and a marked best answer, and nothing expires. Many communities keep chat for banter and use Dium for questions. Dium vs Slack.
Can we run live sessions in Dium?
Yes. Any Wave can become a scheduled or live session with RSVPs, a meeting link, raised hands, polls and breakout rooms. Questions asked during the session stay attached to the Wave afterwards.
Can we put Dium on our own website?
Yes. Partners mount Dium inside their own site path and sign members in with SSO. See the developer overview.
Do you have a demo?
Three kinds. Take the tour to click through Dium with sample data, no sign-up. Open the demo templates to try every app screen and embeddable widget live. For communities over 50 members or events with sponsors, book a 30-minute walkthrough.
Put your community's answers somewhere they last.
Free while you are under 50 members. No credit card. Set up a Flow in a few minutes.