phpBB
Hosting

phpBB is, in raw numbers, the forum platform I've installed and migrated more than any other in 25+ years of hosting. It runs on more sites we host than any other forum software, and that's not because we promote it specifically. People just know phpBB. It's the default choice when somebody says "we need a forum" and they don't have a strong opinion about which one. There's a good reason for that, and there's a slightly annoying reason for that, and both are worth knowing about before you commit.

The good reason: phpBB is mature. The codebase has been beaten up by twenty-plus years of real-world use, the security track record is reasonable for open-source software at this scale, and the extension and style libraries are huge. If you can think of a feature you want, somebody has probably written an extension for it. Documentation is thorough. The community forum (powered by phpBB itself) is active and people get answers.

The slightly annoying reason: the admin control panel is, to put it kindly, busy. There are a lot of options. The permission system is genuinely powerful and genuinely confusing on first contact, and even after fifteen years of clicking around it I still occasionally have to test "what does this checkbox actually do" by ticking it and seeing what happens. New administrators sometimes get lost.

"phpBB is the safe choice for a serious forum. It's not the prettiest, it's not the friendliest to set up, but if you want something that will still be running in ten years and has solved every weird edge case you can think of, this is the one."

Mark McNeece, Founder, 365i Hosting

Hosting-wise, phpBB scales well across our plans. A new or small community runs comfortably on shared hosting at £5.99/mo. PHP 8.5, MySQL 8, 256MB memory, and our autoscaling cloud platform with unlimited LVE resources handle a steady community without issue. We've got phpBB sites with several thousand active members on standard shared. Larger communities, around 50,000+ posts and a heavy concurrent user count, often benefit from cloud hosting at £9.99/mo for the extra headroom and dedicated resources.

Two technical things to watch for: the search index can become a real database burden on large active forums, and the attachments directory grows steadily without anyone noticing. We back both up daily, but search performance on big boards sometimes wants a professional rebuild or a switch to one of the external search extensions. We can advise on which approach suits your specific traffic profile.

If you're choosing phpBB for a new community, my advice is to install via our one-click installer, pick one well-maintained style early and stick with it, install only the extensions you genuinely need, and spend a serious afternoon with the permissions system before you let real members in. An hour of permissions work up front saves a year of "why can\'t this user-group see that forum" tickets. We migrate phpBB sites in for free as part of normal hosting support.