Is HumHub a WordPress plugin?
No. HumHub is a standalone social network application built on the Yii PHP framework - it is its own software that you host separately, not something that runs inside WordPress. BuddyNext is a WordPress plugin, so it lives inside your existing WordPress site rather than being a second application to run alongside it.
Do both let me own my data?
When you self-host, yes - both keep the community on infrastructure you control. HumHub's Community Edition is open-source software you run yourself; BuddyNext runs in your WordPress database. Note that HumHub also offers a managed SaaS, in which case the data sits on their servers instead.
Which should I pick for an internal company intranet?
Honestly, HumHub is purpose-built for that. Its collaboration UX, spaces, and the enterprise auth (LDAP/SAML/JWT) and search in its paid editions are aimed squarely at organizations and intranets. BuddyNext shines when the community belongs on a WordPress site - a public or private community that shares your site's theme, content, and ecosystem.
Is HumHub free?
The Community Edition is free and open source if you self-host it. The Professional and Enterprise editions, which add SSO, advanced search, enterprise modules, white-label, and commercial support, are paid - and the managed SaaS is priced by user count. BuddyNext has a complete free tier with community features built in, and an optional Pro license on top.
Can I run HumHub on my WordPress site?
Not directly - HumHub is separate software, so you would be running two applications. If your site is WordPress and you want the community to live in it (one login, one theme, one content stack), BuddyNext is the natural fit. If you are happy running a dedicated, separate social platform, HumHub is a complete option on its own.