Forum Fortress
Blocklist checkerProtect your forum for free
Forum spam protection

Forum spam is no longer your problem.

Forum Fortress protects registrations, posts, profiles and signatures across supported forum platforms - without forcing genuine users through CAPTCHA.

Install the plugin for your forum software, connect to the Forum Fortress cloud, and manage spam decisions from one dashboard.

Protect your forum for freeTry the portalSee how it works
No CAPTCHA friction
Protection starts immediately
One dashboard for every site
Free protection that stays useful

Live network stats

Network-wide totals from the live Forum Fortress network.

Spam attempts blocked
3,182
Forum checks processed
5,364
Spam signals indexed
6,145,590
API calls handled
578,870
Downloads

Choose your forum software

Install protection for your platform, connect to the Forum Fortress cloud, and manage spam decisions from one dashboard.

XenForo

Available now · v1.5.30

  1. Download the Forum Fortress ZIP below.
  2. In XenForo Admin, go to Add-ons → Install/upgrade from archive.
  3. Upload the ZIP and install when prompted.
  4. Open Forum Fortress options and enter your forum's public URL.
  5. Run Tools → Forum Fortress → Connection test to confirm outbound access.
Download XenForo add-onFull install guide
Antispam cloud

Designed to never stop, never slow down

Protection runs on our distributed network - not a single box that can go quiet or bottleneck your forum.

Always-on coverage. We monitor multiple decision-engine nodes around the clock so spam defenses stay up, healthy, and ready the moment traffic spikes.

Speed that follows your hosting. If the path between your server and Forum Fortress looks slow, we automatically spin up decision capacity closer to your datacenter. Your site stays fast; members never feel us working in the background.

  • Latency-aware routingExtra decision capacity near you when it matters - no tickets, no tuning.
  • Redundant decision enginesMultiple nodes watched continuously so a hiccup never means a blind spot.
  • Invisible to genuine membersReal users keep smooth signups and posts while risky traffic gets filtered out.
Protect your forum for freeCompare plans

Under attack right now?

Install the plugin for your forum software and Forum Fortress starts protecting immediately. No account registration required. No credit card. New sites receive a complimentary Pro trial for 30 days with full automation and reporting.

Protection the moment you install - no setup queue
Spam intercepted before it hits public threads
No portal signup and no card to start
30 days of full Pro on us - then stay free or upgrade
Download now

Spam takes many forms. All of them waste time.

Fake signups

Bogus registrations clog your user list.

First-post spam

Spam posts appear minutes after signup.

Profile spam

Links and promos hidden in profiles.

CAPTCHA complaints

Good users hate extra steps and abandon.

Moderator overload

Queues pile up and important items slip.

Lost sign-ups

Real users give up before joining.

Built for forums, not generic website forms.

Registrations, posts, profiles, and signaturesProtected where spam actually happens.
Understands forum behaviourContext-aware decisions, not one-size-fits-all rules.
Low friction for real usersNo CAPTCHAs. No account walls.
Designed for real forum trafficBuilt against live spam patterns, not synthetic demos.
Useful free tierProtects public pages and keeps queues manageable.
Paid tiers reduce admin workMore automation, reports, and tools.

How it works

1User registers, posts, or edits profile
2Forum Fortress checks network, identity, and behaviour signals
3Allow, challenge, queue, or block automatically
Genuine users sail through.

Suspicious activity is handled before it hits public pages.

Customer portal

Keep your community protected without living in the admin panel

The Forum Fortress portal gives owners, admins, and moderators a simple place to see what was stopped, what needs a decision, and whether their forum is running smoothly.

Made for busy forum teams. Whether you run one hobby forum or several communities on different forum platforms, the portal gives you one place to see what was stopped, what needs review, and whether each forum is running smoothly.

Plain-language context. See why an account, post, or profile change was blocked, challenged, or allowed without digging through server logs.

Less queue watching. When things are quiet, the portal stays out of your way. When something matters, it brings the next decision to the surface.

  • Review queueDeal with uncertain signups, posts, and profiles in one focused list.
  • Decision log + checkerLook back at past decisions or check a username, email, IP, or domain when something feels off.
  • Multi-forum moderationManage spam protection for multiple forums - even across different forum software - from the same portal. Available on Pro.
  • Advanced reports + graphsSearch and filter activity, spot trends, and see moderation workload clearly. Available on Pro.
Launch portal demoSample data only · opens in a new tab

Run more than one community?

Manage spam protection for multiple forums - even across different forum software - from the same Forum Fortress portal.

Whether you run one hobby forum or several communities on different forum platforms, the portal gives you one place to see what was stopped, what needs review, and whether each forum is running smoothly.

AI you control

AI, when you want it

AI you control - powerful features, off by default, ready when you are

  • AI can be a powerful moderation tool, but it is not for everyone. So we keep it off by default.
  • You stay in control. Run your queue fully manually, let AI help clear review items automatically, or use it only for a one-off pass when you choose.
  • On Core and Pro, AI can step in when the fast decision engine is unsure. Turn on automation to help process queued items, or leave it off and keep every decision in your hands until you are ready.
  • On Pro, AI can also help process reported posts across your communities, so when you want to stop thinking about day-to-day moderation, you can.
Compare plansPortal demo

Simple pricing for communities of every size.

Start free. Upgrade when your forum needs higher limits, automatic blocking, multi-forum management, or Pro-only advanced reporting and graphs.

Free

$0/month
2,000 checks/month · 25 autoblocks/day
  • Daily autoblock limit: 25
  • Not included: AI Review (automatic challenged-event decisions)
  • Not included: AI Moderation (MultiMod queue automation)
  • Keeps spam off public pages
  • Suspicious items held for review
  • Basic reasons and logs
  • Good for small communities
Recommended

Core

$5/month
20K checks/month · 250 autoblocks/day
  • Daily autoblock limit: 250
  • AI Review (automatic challenged-event decisions)
  • Not included: AI Moderation (MultiMod queue automation)
  • Automatic blocking
  • Less moderation work
  • Decision log + review queue
  • Attack mode
  • Up to 2 forums

Pro

$15/month
100K checks/month · unlimited autoblocks
  • Daily autoblock limit: Unlimited
  • AI Review (automatic challenged-event decisions)
  • AI Moderation (MultiMod queue automation)
  • Advanced reports
  • Graphs (analytics trends)
  • Moderation workspace
  • Multi-forum management
  • Priority support
  • Up to 5 forums
Same protection engine on every plan. Paid tiers add automation, reporting, and less queue time - not weaker detection.

Need help with a spam wave, migration, or custom setup?

Tell us what is happening on your forum. We will reply with practical next steps.

Built with

Python
FastAPI
PostgreSQL
nginx
Debian
Vultr