Feature
Thinking about phpBB?
phpBB has been running forums since 2001, it's free, and it has one of the largest extension libraries in the business. It also carries 25 years of architectural decisions from before mobile, before modern PHP, before most of what people now expect from a community platform. This comparison is a bit different from our others, because phpBB isn't really a vendor you're choosing between, it's a volunteer-maintained open-source project with no company actively selling or hosting it for you. The real question isn't Floxum versus phpBB, it's whether you want to run a genuinely dated but stable platform yourself, or run something built for how communities actually work today.
Where we actually differ
Free software, but not a free forum. phpBB the software costs nothing. What it doesn't include is hosting, security patching, version upgrades, or anyone accountable if something breaks at 2am. You'll either do that yourself or pay a generic web host to do it, and most generic hosts don't know phpBB specifically any better than they know any other PHP application. Floxum charges for the software and for genuinely not having to think about any of that.
Mobile-first versus a resized desktop site. phpBB's interface and admin panel were built for a pre-mobile web, and it still shows: the mobile experience largely feels like a shrunk-down desktop layout rather than something designed for a phone screen first. Flarum was built mobile-first from the ground up, which is also where its lean, modern feel comes from. If your community is mostly reached on phones, and most communities are, this is a real, day-to-day difference for your members, not a cosmetic one.
Whose jurisdiction actually applies. This is worth being precise about, because it's not the usual comparison. phpBB Limited is a UK-registered company, but it doesn't host your forum, so its jurisdiction is mostly beside the point. What matters is whoever you choose to host your self-hosted phpBB instance with, which could be anywhere in the world depending on which host you pick. With Floxum, there's no ambiguity: we host it, and we're an EU company operating EU infrastructure end to end.
An actively maintained extension catalog versus a 25-year archive. phpBB's extension and MOD library is enormous, genuinely one of the largest in forum software, and that's exactly the problem as much as it's the strength. Browse it and you'll find a dedicated forum for abandoned MODs, extensions that only ever worked on versions several releases behind current, and older MODs that require editing core files directly rather than installing cleanly. Nobody curates that library for what's current. Floxum's marketplace, whether free or premium, is version-tracked through Composer and synced against what's actually compatible with your install, so what you see listed is what currently works, not what worked five years ago. Every extension in that catalog has gone through Floxum's own AI-assisted code review before going live, and if something's missing, requesting it gets it reviewed and rolled out to every community on that Flarum version, not left to age unmaintained the way old phpBB MODs often are.
Where phpBB is the better choice
If your priority is zero software cost and you're comfortable with a self-hosted, DIY setup, phpBB is hard to beat, there's no subscription, no vendor at all in the usual sense, and if you can live with the interface, the platform itself is stable and well understood after two and a half decades in production. Some communities specifically value that there's no company steering the roadmap toward commercial pressure. If that independence matters more to you than a modern interface or managed convenience, phpBB is a legitimate, honest choice, not a lesser one.
Comparison
Table header label
Table header phpbb
phpBB
Table header floxum
Floxum
Table cost label
Software cost
Table cost phpbb
Free
Table cost floxum
Floxum charges for managed hosting; Free (Flarum);
Table hosting label
Hosting
Table hosting phpbb
Self-hosted only, no official managed option
Table hosting floxum
Fully managed by Floxum, or self-host Flarum yourself
Table entity label
Governing entity
Table entity phpbb
phpBB Limited (UK, volunteer-run, no commercial hosting arm)
Table entity floxum
Floxum (EU company, actively operated)
Table jurisdiction label
Data jurisdiction
Table jurisdiction phpbb
Depends entirely on whichever host you choose
Table jurisdiction floxum
European Union, by design
Table mobile label
Mobile experience
Table mobile phpbb
Adapted from a desktop-era design
Table mobile floxum
Built mobile-first
Table extensions label
Extension ecosystem
Table extensions phpbb
Very large, 25 years of contributions, mixed maintenance quality
Table extensions floxum
1,132 free extensions (1.x), 573 and growing (2.x), AI-reviewed and rolled out by Floxum on request
Table support label
Support model
Table support phpbb
Community forums, volunteer-based
Table support floxum
Direct access to the team operating your infrastructure
Table fit label
Best fit
Table fit phpbb
DIY admins who want zero software cost and full independence
Table fit floxum
Teams wanting a modern, managed, mobile-first platform
Migration
Moving from phpBB usually means moving from a very different data structure and permissions model, so we'll walk through what maps cleanly and what needs rethinking rather than a straight lift-and-shift.