What phpBB does

phpBB is a free, open-source flat-forum bulletin board software solution operated by phpBB Limited, a private company founded in 2000 and headquartered in Marlow, United Kingdom. The software is written in PHP and built on the Symfony framework (currently Symfony 3.4 for the 3.3 branch, with phpBB 4.0 in alpha), and supports a broad range of database backends including MySQL/MariaDB, PostgreSQL, SQLite, Oracle, and Microsoft SQL Server. The platform is distributed under the GNU General Public License v2, with the current stable release being phpBB 3.3.17 "Young Bertie" (June 2026). phpBB's product surface includes the core forum software plus a customization ecosystem of 492 extensions, 709 styles, and 55 language packs, all available through a self-serve customisation database accessible from the admin panel.

The software serves web administrators, open-source projects (Joomla, OpenOffice, VideoLAN, VirtualBox, Raspberry Pi, Debian, Mozilla), SMBs, hobbyist communities, and internal enterprise forums. Notable deployments include Bokt.nl (280K+ members, 95M posts), Conquer Club (500K+ members), and Mozillazine (350K+ members). phpBB does not license the software and does not run a traditional sales motion; the project is distributed exclusively through direct download from phpbb.com with hosting partner integration (BlueHost one-click install) and an embedded demo at try-phpbb.com.

phpBB Limited generates revenue almost entirely through advertising on phpbb.com — including image banners at $2.00 CPM, text-link sponsorships, and footer placements — supplemented by community donations and sponsorships. The site attracts over 5 million visits per month and 25,000 daily unique visitors. Infrastructure hosting is donated by the Oregon State University Open Source Lab (OSUOSL), and the project is maintained by a small distributed team of named contributors plus an extended volunteer community, with no disclosed external funding or institutional shareholders.

Name

phpBB

Legal name

phpBB Limited

Website

https://phpbb.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

phpBB is a free, open-source bulletin board software platform written in PHP on the Symfony framework, distributed under GNU GPL v2 and operated by phpBB Limited. It powers online communities globally for open-source projects, SMBs, hobbyists, and enterprises via self-serve download and an extension ecosystem.

Ownership category

akta.pro rank

Product category

Open Source Forum / Bulletin Board Software

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182)

SIC

Services-Prepackaged Software (7372)

akta.pro primary industry

Developer Portals, SDKs & Documentation Platforms (BPAMADAG)

Keywords

• Open source forum software
• Bulletin board software
• Discussion board platform
• Community forum software
• Forum extension marketplace

Headquarters

HQ city

Marlow

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Technology or R&D, Infrastructure, Personnel, Operations, Others

Revenue model

1. Advertising Revenue: phpBB generates revenue through advertising on phpbb.com, including text link advertising in the sponsors box and footer, image banner advertising (728x90 leaderboard at $2.00 CPM), and custom campaigns. The site receives over 5 million visits per month and over 25,000 unique visitors daily.
2. Voluntary Donations/Sponsorships: As a free open source software project, phpBB relies on community donations and sponsorships. Hosting is donated by OSUOSL. Companies can advertise to reach the phpBB audience.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels7 records

Core offering

phpBB is a free, open-source flat-forum bulletin board software solution written in PHP and built on the Symfony framework. It enables web administrators and communities to host threaded discussion forums with user management, moderation tools, private messaging, anti-spam, multi-language support, and extensibility via a customisation database of 492+ extensions, 709+ styles, and 55 language packs.

Product overview

phpBB is a free, open-source bulletin board software platform written in PHP, built on the Symfony framework. The core product is the phpBB forum software (currently version 3.3.17 'Young Bertie' with phpBB 4.0 in alpha development). The platform offers a modular architecture where the core forum functionality is extended through add-on modules including Extensions (492 available for adding features like media embedding and PayPal donations), Styles (709 themes for visual customization), Language Packs (55 translations), Official Tools (development and administration utilities), and a Customisation Database. Users can access full Documentation and Knowledge Base resources, and test the platform via an online Demo. The product supports multiple databases (MySQL/MariaDB, PostgreSQL, SQLite, MS SQL Server, Oracle), multiple authentication methods (database, OAuth with Google/Facebook/Twitter, LDAP, Apache), and is released under GNU GPL v2.

Differentiator

Problem solved

Functional benefit

Products and services

• phpBB Bulletin Board Software Free and open source flat-forum bulletin board software written in PHP and built on the Symfony framework. Enables users to stay in touch with a group of people or power an entire website with forums, discussions, and user management; supports MySQL/MariaDB, PostgreSQL, SQLite, MS SQL Server, and Oracle databases. Released under GNU GPL v2.
• phpBB Extensions Downloadable add-on packages that extend phpBB functionality (e.g., Media Embed, PayPal Donate, Giphy). Easily installed via the Administration Control Panel with minimal configuration required.
• phpBB Styles Visual themes and templates (709 styles) that change the appearance of phpBB forums, including prosilver (default), dark and light styles, and prosilver/subSilver2-based variants, plus graphics packages (ranks, avatars, smilies).
• phpBB Language Packs Localization packages translating phpBB into 55 different languages with full UTF-8 support, available for download and fully integrated into the download system.
• phpBB Official Tools Official developer and administration utilities including phpBB QuickInstall (local board setup), Skeleton Extension (extension boilerplate), Support Toolkit (corruption recovery), MODX parser, AutoMOD installer, and UMIL installation library.
• phpBB Demo Online demonstration environment of phpBB 3.3 that allows prospective users to test full functionality including login, posting, configuration, and forum creation; resets after 1 hour.
• phpBB Customisation Database Integrated community repository accessible from the phpBB admin panel and online, cataloguing 1,936 contributed customisations including extensions, styles, language packs, BBCodes, smilies, avatars, and ranks for downloadable use.

Quantifiable outcome

• No licensing costs - 100% free under GNU GPL v2
• +3 more outcomes

Named customers14 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

Feature6 records

Partnerships

Four partnerships are on record, tiered minor and core.

• BlueHostminorChannel Partner/ Reseller/ DistributorBlueHost is listed as a sponsor offering one-click phpBB installation for their hosting customers. They are promoted on phpbb.com with 'free domain' and 'unlimited' hosting offers starting at $6.95/month. BlueHost was voted best web host 2004-2010 according to phpBB advertising materials.
• OSUOSL (Oregon State University Open Source Lab)coreOthersOSUOSL provides donated hosting services for phpBB.com infrastructure. This is a critical infrastructure partnership enabling the project to operate its website, downloads, and community forums.
• SektionEinscoreStrategic or Co-development PartnerSektionEins, particularly security consultant Stefan Esser, conducted rigorous security audits of phpBB3 before initial release and subsequent audits during its lifetime. No reported major vulnerabilities resulted from these audits.
• SymfonycoreTechnology or IntegrationphpBB is built on the Symfony framework, specifically Symfony 3.4 for phpBB 3.3. This framework provides the architectural foundation for the bulletin board software.

Scale indicators8 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Flarum: Modern open-source forum platform built with PHP. Emerging direct competitor with a younger codebase targeting the same self-hosted forum space phpBB occupies.
• Vanilla Forums: Cloud-hosted enterprise community platform. Adjacent competitor to phpBB in the community/forum category, but delivers as a SaaS solution rather than self-hosted open-source software.
• NodeBB: Node.js-based modern forum software. Emerging competitor to phpBB with overlapping forum functionality but a different (JavaScript) technology stack and a focus on real-time features.

Direct peers

• Discourse: Modern open-source forum/discussion platform with self-hosted and hosted options. Direct competitor to phpBB in the community discussion forum category, with overlapping target users (community managers, OSS projects, enterprises) but a newer, modern stack.
• MyBB: Free, open-source forum software written in PHP. Closest direct competitor to phpBB on price (free), license model (GPL), and target audience (small-to-mid communities).
• bbPress: WordPress-based forum plugin distributed under GPL. Directly comparable to phpBB as free, open-source forum software targeting the same SMB and hobbyist community segment, particularly WordPress users.
• vBulletin: Long-established commercial forum software. Directly competes with phpBB for the same bulletin board use case; differs in being closed-source and paid, while phpBB is GPL and free.
• WoltLab Suite: Commercial forum and community software with an extension marketplace. Directly competes with phpBB in the bulletin board category via paid licensing and premium add-ons, primarily serving European SMBs and communities.
• XenForo: Commercial forum software with add-on ecosystem. Competes with phpBB for the same bulletin board use case but with paid licensing and premium extensions — represents phpBB's commercial counterpart.
• Simple Machines (SMF): Open-source forum software also written in PHP and offered free of charge. Direct peer to phpBB in technology stack, license, and self-hosted forum use case.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/phpbb
• GitHubgithub.com/phpbb
• Facebookfacebook.com/phpBB
• LinkedInlinkedin.com/company/255254

Revenue estimate

Valuation estimate

Number of profiles

Profiles15 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about phpBB