Forum software runs threaded discussion boards where members post, reply and moderate in public or behind a login.
This guide ranks products by the effort to launch and maintain a board, what hosting or staff growth adds to the bill, how threads leave when you move, and whether one small vendor or project stands behind it.
Vendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. Every vendor link is marked the same, whatever the arrangement behind it. How that works.
In short
What forum software does
Forum software provides threaded discussion boards with member accounts, categories, moderation tools and search, installed on your own server or rented as a hosted community.
Each forum tool was put through the same five questions, in sequence: how hard is setup, what does it really cost, how does data come back out, can you leave, and who is it for. A separate rule reserves the first three places for challengers and moves the household names to place 4 and below. The reasoning behind the five tests, and behind having no score out of ten, is set out on the how we work page.
User-funded; the site shows no prices or donation amounts, and licence and hosting model are not stated
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Fan, art and writing hobbyists wanting community spaces beside personal blogs
Companies wanting a branded forum of their own for customers
The country column shows the vendor's headquarters or contracting entity. Data hosting is a separate matter, and an entry flags it when the two diverge.
Canadian forum software with monthly hosting plans or a self-installed copy
Ranked #1 of 11 in Best Forum Software in 2026.
Self-hostablePublished pricingNorth America
Hosted use runs through four monthly plans, from Starter with 50,000 pageviews, 5GB and weekly backups up to City with 10,000,000 pageviews, 300GB and daily backups. No plan limits staff accounts, and all carry SSL and a domain of your choosing.
The code supports Redis, MongoDB or PostgreSQL and offers read and write APIs. Qualifying open-source projects may ask for free Starter hosting at the company's discretion, while enterprise terms come only through sales.
What stands out
Pageview tiers
GPLv3
Card-backed trial
Where it costs you
Hosted caps are counted in pageviews, so a thread that goes viral can push a forum into the next price band.
Enterprise pricing is not published and needs a sales contact.
Right for
Small organisations wanting a modern forum with a monthly bill and an easy exit
Wrong for
Communities that want to test hosting without entering card details
CanadaPublished monthly plans in four sizes by pageviews and storage; 14-day trial backed by a card; GPLv3 code to self-host
Forum software with a hosted free plan and a GPL self-install option
Ranked #2 of 11 in Best Forum Software in 2026.
Free tierPublished pricingElsewhere
Four hosted tiers exist: Free, Pro at $100 a month, Business at $500 a month and a custom Enterprise. Seats, emails and storage grow with each step, up to 15 staff seats and 100GB on Business.
Built-in chat, private messaging, groups, a searchable knowledge base and SAML sign-in are all named on the site, plus GitHub mirroring of issues. Trials offer a Global or Europe hosting region, and members are unlimited on every plan.
What stands out
Staff-seat plans
Europe hosting region
GPLv2 or later
Where it costs you
The free plan stops at 10 categories and 5GB of storage, so a forum with several topic areas outgrows it.
Two staff seats come with the free plan, which limits how many moderators can hold staff rights.
Right for
Communities with many members and few moderators, hosted or run by the owner
Wrong for
Groups needing a published enterprise price or a named home country
Not stated by the vendorPlan ladder from a free hosted tier through Pro and Business to quoted Enterprise; members are never billed; trials on paid plans
MIT-licensed forum with realtime updates, installed on your own server
Ranked #3 of 11 in Best Forum Software in 2026.
Self-hostablePricing on requestElsewhere
Permissions and groups can be set per category, themes and custom CSS reshape the look, and editors come in Markdown or WYSIWYG form. New discussions and replies can appear in real time, and a deck page shows live columns side by side.
The licence is MIT and the organisation is the Flarum Foundation. The pages show no price list, no trial and no country, so budgeting and jurisdiction questions stay unanswered.
What stands out
MIT licence
Realtime extension
Category permissions
Where it costs you
No hosted plan or price is shown, so every hour of server work falls on the buyer.
Live updates depend on a background process that has to stay running, which is more than a plain upload.
Right for
Technical teams wanting a themeable forum with permissions set per category
Wrong for
Buyers who want to rent a forum and never touch a server
Not stated by the vendorSelf-hosted under the MIT licence; no prices, hosted plans or trial appear on the site
Volunteer-run forum software with plugins and a built-in theme editor
Ranked #4 of 11 in Best Forum Software in 2026.
Free tierSelf-hostablePublished pricingElsewhere
The home page describes the product as free and open source, and the GitHub README names LGPL v3. Features listed are an advanced plugin system, a template and theme editor, moderation tools for staff and private conversations among several users.
Four database engines are supported. The only money link is a donations page without amounts, and no company, country or hosted option is named, so the whole running cost is your own server time.
What stands out
LGPL-3.0
Volunteer-run
Four databases
Where it costs you
Only a download is offered, so every buyer must provide and maintain a server.
The project is volunteer-run, so there is no vendor commitment to a fix date.
Right for
Admins comfortable with self-installing who want plugins, themes and staff moderation tools
Wrong for
Buyers wanting a hosted service or a commercial support route
Not stated by the vendorFree to download and self-host under LGPL-3.0; the site links only a donations page and lists no hosted plan
Q&A, chat and forum threads inside one open source community platform
Ranked #5 of 11 in Best Forum Software in 2026.
Open sourceSelf-hostablePricing on requestElsewhere
Questions and answers, a support chat, link sharing and forum threads live together, with advanced search and sorting by active, popular or new. Priority tags run from -1 to +10 to rank topics.
The licence is AGPLv3 or later, a hosted forum plus a demo site are named, and self-hosting notes sit in a separate repository. Documentation is flagged as incomplete by the project itself, and no price, owner or country is given.
What stands out
AGPLv3 or later
Priority tags
Q&A topics
Where it costs you
The README calls docs.talkyard.io incomplete, so a self-installer should expect gaps.
No price, plan or trial appears on the pages we read, so budgeting means asking.
Right for
Teams wanting Q&A, chat and discussion topics inside a single product
Wrong for
Buyers who need a stated company, country and price before trialling
Not stated by the vendorNo price shown on the pages read; AGPLv3 code, a hosted forum and a separate self-hosting repository
Forum software from the WordPress creators, run on your own WordPress site
Ranked #6 of 11 in Best Forum Software in 2026.
Pricing on requestElsewhere
The site presents bbPress as forum software from the creators of WordPress, covering asynchronous discussion, user profiles and subscriptions. Setup is described as easy and stepwise, with one central account and one unified admin area.
GitHub states WordPress 6.0 and PHP 7.2 as minimums and a GPL-2.0 licence. Forums can be divided into sections on multisite. Everything depends on the host WordPress site, and no country or maintainer is named.
What stands out
WordPress 6.0+
PHP 7.2+
GPLv2 or later
Where it costs you
It cannot run alone, because a WordPress install is a prerequisite.
No hosted service is named, so hosting and upgrades remain the buyer's job.
Right for
WordPress site owners adding a discussion area under one shared login
Wrong for
Organisations without WordPress or a developer to maintain it
Not stated by the vendorGPL-2.0-or-later code that runs on your own WordPress install; the pages show no prices or hosted service
Python forum application installed with Docker, dockerless or YunoHost
Ranked #7 of 11 in Best Forum Software in 2026.
Pricing on requestElsewhere
The extensions mechanism lets plugins modify built-in classes, a Username Styles plugin is named, and simplified user permissions are listed as a topic. Install options are Docker, dockerless or YunoHost.
The GitHub repository gives the GPL-2.0 licence and a Python 3.12 requirement but no Django version. Money appears only as a tip link without amounts. Nothing on the site states an owner, a country or a hosted plan.
What stands out
GPL-2.0
Python 3.12
YunoHost
Where it costs you
Notifications are listed as roadmap, not as something shipped.
No organisation, price or support route is named, so the repository is the only point of contact.
Right for
Python-comfortable admins wanting a modern forum on Docker or YunoHost
Wrong for
Teams that need notifications and a vendor to call today
Not stated by the vendorGPL-2.0 code with Docker, dockerless and YunoHost install routes; the only money item is a tip link
Federated link-and-comment platform run by many independent servers
Ranked #8 of 11 in Best Forum Software in 2026.
Self-hostablePricing on requestElsewhere
Servers talk to each other, so an account on one can follow communities on others. Posts get upvotes and downvotes, comments are threaded, moderation actions go in a public log, and RSS and Atom feeds are offered.
The server is written in Rust with Actix and Diesel and runs on arm64 and Raspberry Pi hardware. Installation goes by Ansible or Docker, the licence is AGPL-3.0, and no price, company or country is stated.
What stands out
AGPL-3.0
Federated
Rust
Where it costs you
No company stands behind it, so no vendor exists to hold to a service level.
Upvote and downvote ranking suits public link sharing more than structured help forums.
Right for
Public interest communities that want to join or run a federated server
Wrong for
Businesses needing a private, supported forum with a named vendor
Not stated by the vendorSelf-hosted AGPL-3.0 code via Ansible or Docker; servers run by others are listed, with no prices given
Java forum application for Tomcat or Jetty with a BSD licence
Ranked #9 of 11 in Best Forum Software in 2026.
Pricing on requestElsewhere
The site calls it forum software built as a Java web app, running on one of a variety of databases and localised in numerous languages. Two lines exist: the current build with Servlet 6 and Java 11, and legacy 2.8.3 on Java 8 with Servlet 3.1.
Downloads and source live on SourceForge. Only a BSD licence is named, without a version, and no price, hosted option or country is given.
What stands out
Java 11
BSD licence
Servlet 6
Where it costs you
The 2.8.3 line is no longer in development, so older installs sit on frozen code.
The licence is named only as BSD without a version, which a legal reviewer will want pinned down.
Right for
Java teams that already operate Tomcat or Jetty and want a forum
Wrong for
Teams without Java hosting experience or wanting a rented service
Not stated by the vendorSelf-installed from SourceForge under a BSD licence; the site names no prices or hosted service
Federated all-in-one home base with forum-style conversation containers
Ranked #10 of 11 in Best Forum Software in 2026.
Pricing on requestElsewhere
Identity can be cloned and moved to a new server, and logins federate to other websites without a local account. Posts, files and groups can be kept private, and conversation containers load a full thread with additional moderation tools.
The project describes itself as open source and privacy-respecting. The pages we read name neither a licence nor prices, and an Association section exists without naming a country.
What stands out
Nomadic identity
Federated login
Private groups
Where it costs you
The licence is not named on the site, which blocks a procurement check.
Forum use is one feature of a wider platform, so a buyer wanting only threads takes on identity and privacy concepts too.
Right for
Privacy-minded groups wanting portable identity next to private group discussions
Wrong for
Buyers who need a plain forum with a named licence
Not stated by the vendorNo prices are shown on the site; the licence is not named and no hosted plan is described
Blogging platform with community spaces, ranked last as a forum
Ranked #11 of 11 in Best Forum Software in 2026.
Pricing on requestElsewhere
Members post to personal blogs and can also join user-created community spaces. Each post can be visible to everyone, to followers or only to its author, and posts can be marked NSFW.
The operator, Pillowfort Blogging LLC, says users fund the site, but shows no amounts. A rule forbids AI-generated text or images. Because no licence, hosting model, price or country is stated, it works as a hobby site rather than a purchasable tool.
What stands out
Blogging platform
Community spaces
No AI content
Where it costs you
It is a blogging site, so threaded support or product discussion is not what it is built around.
The pages state no licence or hosting model, so a private copy is not an evident option.
Right for
Fan, art and writing hobbyists wanting community spaces beside personal blogs
Wrong for
Companies wanting a branded forum of their own for customers
Not stated by the vendorUser-funded; the site shows no prices or donation amounts, and licence and hosting model are not stated
Forum software provides threaded discussion boards with member accounts, categories, moderation tools and search, installed on your own server or rented as a hosted community. Rather than compare features, settle the following points one after another.
01
Check who publishes a price
Only 3 of the 11 print a price; 8 quote per organisation. Comparable without a sales call: NodeBB, Discourse, MyBB.
02
Look at where the vendor sits
Check the vendor's home market (Elsewhere 10, North America 1), because that is where subpoenas and data requests arrive first, whatever region holds your files.
03
Consider whether you want the source
Source code is available for Talkyard. Running it yourself swaps the licence fee for your own upkeep.
Discourse, NodeBB or Flarum: what ninety days of running a forum really cost
A forum is a server job before it is a community job. Flarum is installed from a guide on your own machine and wants a background process for Realtime. NodeBB sells the same chore as a monthly plan with weekly or daily backups, while Discourse hosts a free plan and lets trials choose a Europe region.
Hours matter more than licences here: a MIT or GPL download costs nothing until someone patches it at night. Ask who upgrades the software, who restores a broken board, and which database holds your threads. If nobody on staff can answer, a hosted plan is the cheaper option even when its monthly price looks high, because the fee replaces hours of unpaid weekend work that nobody budgeted.
Name the person who will install updates and test them before launch
Confirm which database engine stores the threads and how it is backed up
Compare one month of hosted fees with the hours a self-install would take
Staff seats, pageviews or nothing at all: how forum bills grow
Forum vendors meter different things, and the meter decides your bill. Discourse counts staff seats, so a board with thousands of readers but five moderators stays cheap, whereas a team with fifteen moderators lands on Business. NodeBB counts pageviews, so traffic spikes move you up a plan while staff accounts stay unlimited.
Flarum, MyBB, Misago and JForum show no prices at all, which turns the real price into server and admin time. Ask for the meter that matches your growth, then model a year of posts, moderators and email volume. Discourse also caps monthly emails, which matters if digests go to a big list, since a busy month could push you toward the next plan before posts do.
Count moderators you need with staff rights, not just members
Estimate monthly pageviews from your current site analytics
Check email limits if you plan daily digests to every member
Moving a community: what MyBB, bbPress and Misago mean for your threads
A forum archive outlives its software, so look at where the threads sit. MyBB lists MySQL, MariaDB, PostgreSQL and SQLite, which gives you a database you can query and move. bbPress stores its discussion inside your WordPress site, so leaving means leaving that stack. Discourse links a migrations page, and NodeBB offers read and write APIs.
Several tools in this list show no hosted service at all, so the exit is simply the server you already own. Test an export before launch, not after a crisis, and keep a plain dump of every board somewhere you control. Check that attachments, avatars and user accounts leave with the posts, and that old links can be redirected to the new address.
Run a trial export of threads and users before you commit
Find out whether attachments travel with the posts
Store a dated database dump outside the forum server
Lemmy, Hubzilla and Pillowfort are not support forums
Some names in this market solve different problems. Lemmy is a federated link aggregator with upvotes, run by many independent servers, so you cannot make a private customer forum from it. Hubzilla is a wider home base for identity and private groups, where forum threads are one feature. Pillowfort is a blogging platform and says so.
Talkyard mixes Q&A, chat and forums, which suits a help centre better than a hobby board. Match shape to purpose before you compare prices, because a cheap tool of the wrong shape costs more in migrations. Write one sentence about what members do on day one and test each candidate against it before anyone installs anything or pays a deposit.
Decide if posts are public, private or mixed for your audience
List the member actions you need, such as Q&A, chat or voting
Rule out tools whose own description names another purpose
What goes wrong most often when buying forum software
Choosing a self-installed forum because the download is free, then discovering nobody on the team can restore it after a failed upgrade.
Treating Discourse's free plan as permanent when 10 categories and 2 staff seats are the stated limits that a growing board hits first.
Picking bbPress without a WordPress site, or expecting Lemmy and Pillowfort to behave like a private customer forum.
Ignoring the pageview meter at NodeBB until a popular thread pushes the forum into the next plan.
07
Frequently asked questions
8 answers
What is the best forum software in 2026?
Our ranking of 11 puts NodeBB first. NodeBB, Inc. builds the product in Canada and sells it two ways: a copy you install on your own server, or four hosted plans that all allow unlimited staff users, a custom domain and priority support.
Billing is monthly with no long-term contract, so leaving is cheap. The cost climbs with traffic, because the caps are pageviews, and the trial needs a credit card.
Which forum tools publish their pricing?
Published pricing exists for 3 products on this page:
NodeBB: Published monthly plans in four sizes by pageviews and storage; 14-day trial backed by a card; GPLv3 code to self-host.
Discourse: Plan ladder from a free hosted tier through Pro and Business to quoted Enterprise; members are never billed; trials on paid plans.
MyBB: Free to download and self-host under LGPL-3.0; the site links only a donations page and lists no hosted plan.
Everything else on the list is priced on request.
Is there a free forum tool?
Discourse, MyBB offer a free tier or a free self-hosted edition.
Where are these forum software vendors established?
Across 2 countries (Elsewhere 10, North America 1):
NodeBB: Canada.
Discourse: Not stated by the vendor.
Flarum: Not stated by the vendor.
MyBB: Not stated by the vendor.
Talkyard: Not stated by the vendor.
bbPress: Not stated by the vendor.
Misago: Not stated by the vendor.
Lemmy: Not stated by the vendor.
JForum: Not stated by the vendor.
Hubzilla: Not stated by the vendor.
Pillowfort: Not stated by the vendor.
Which forum tools are open source?
Talkyard.
Which forum tools can you host yourself?
NodeBB, Flarum, MyBB, Talkyard, Lemmy. The other 6 are hosted by the vendor only.
What should you use instead of NodeBB?
Second is Discourse, which suits Communities with many members and few moderators, hosted or run by the owner. Third is Flarum, which suits Technical teams wanting a themeable forum with permissions set per category.
Who should not buy NodeBB?
Communities that want to test hosting without entering card details. Hosted caps are counted in pageviews, so a thread that goes viral can push a forum into the next price band..
If your forum software product belongs among these 11, tell us what it does and who it is for. Inclusion is an editorial call; what a listing is and is not is set out under software advice.
