A price on the page
Team €90 and Business €450 a month, unlimited members, and a 14-day trial you start yourself.
Open Social and HumHub are both open source and both sold as hosted services. Open Social, a Drupal distribution, targets large organizations and institutions on quote. HumHub hosted by CUZY publishes its prices, starts with a free trial and fits organizations of any size.
Open Social is a community platform built as a Drupal distribution (GPL), maintained by a company in Amsterdam that sells it as a hosted "sovereign community collaboration platform" with advanced features by subscription, on single-tenant hosting in EU, US or Pacific regions, or on-premise. Named clients include international organizations.
Facts about Open Social come from the vendor's own pages, checked in September 2026: Open Social cloud platform, Open Social on drupal.org, Open Social: open source and Drupal. Prices are those published by the vendor (no published prices); they may have changed since. Tell us about an error on the contact page and we correct it.
An open-source social network and intranet platform (spaces, streams, wiki, files, calendar, tasks, polls, messaging, member directory, mobile app), extended by the HumHub marketplace and by every CUZY module, hosted by CUZY on dedicated servers in the region you choose, with a flat price and unlimited members.
The questions a buyer, an IT reviewer or a data-protection officer asks both vendors.
| Criterion | Open Social | HumHub hosted by CUZY |
|---|---|---|
| Pricing | Not published; "scalable pricing" based on the resources needed | Team €90/month or €900/year, Business €450/month or €4,500/year, unlimited members, 14-day free trial |
| Fees on payments | Not published | None. Payments made with the eCommerce module go through your own Stripe account; CUZY takes no commission |
| Single sign-on | Not published on the pricing page | On every plan, trial included, through OpenID Connect and OAuth modules (Keycloak, Microsoft Entra, Google, LinkedIn, GitHub) and SAML-capable identity providers |
| API | Not published | HumHub REST API module on every plan |
| Open source | Open core: the Drupal distribution is GPL; advanced features and add-ons are sold by subscription | Yes. HumHub under the AGPL, every CUZY module with public source code. 100% of the code can be taken away |
| Data ownership and exit | Not published | Complete export of the database and files from the dashboard, once a day, on every paid plan; recreate the same platform self-hosted or on HumHub's own hosting |
| Hosting region and isolation | Single-tenant hosting with data residency in the EU, US or Pacific regions, ISO 27001; on-premise option | Dedicated servers in the region you choose, Germany (EU), the USA or Singapore (APAC); one isolated stack per community; encrypted backups with a second provider in the same region |
| Extensibility | Drupal modules and the vendor's add-ons | The whole HumHub marketplace plus every CUZY module on every plan; custom modules and themes on Business after review |
| AI and your content | Not published | No AI reads your members' content. CUZY uses AI only for its own operations (anonymized technical logs, support ticket text), as stated in the privacy policy |
Team €90 and Business €450 a month, unlimited members, and a 14-day trial you start yourself.
Maps, surveys, eCommerce, LMS, mass notifications and the rest on Business and the trial; the whole HumHub marketplace on every plan.
HumHub is a single application built for communities; administrators work in its interface, without a content management system underneath.
Google, Keycloak and OpenID Connect sign-in from the trial onward.
Both platforms are open source; a CUZY community exports as a standard HumHub that runs on any server.
Open Social is the better fit for a large institution or an international organization that wants a vendor-led, single-tenant deployment with on-premise as an option, a tailored contract, and a platform built on Drupal that its web team already knows.
Start a free trial, import members and content with our help, connect your identity provider, and run both platforms side by side until you are ready. Subscribers can export everything from CUZY once a day, so the move is never a one-way door. Tell us about your current setup and we assess what can be carried over.
Yes. Both are open-source community platforms with groups, events, profiles and discussions. HumHub adds a marketplace of more than 120 modules and a mobile app; CUZY hosts it at a published flat price in Germany (EU), the USA or Singapore (APAC).
Yes, Open Social is a Drupal distribution licensed under the GPL. HumHub is a standalone PHP application, licensed under the AGPL.
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Two weeks with every module and single sign-on, no card asked. Keep everything when you subscribe, export everything if you leave.