Verdict
An open-source PHP/Symfony platform unifying PIM, DAM, CMS and MDM on one codebase, for teams with in-house developers or an integrator partner rather than a marketing team wanting to self-serve.
A DAM, PIM-adjacent and brand-portal platform for large multi-brand enterprises (Michelin, Decathlon, Bayer-scale customers), quote-priced and built around a dedicated admin who configures it.
An open-source, community-governed digital repository platform on Drupal, for libraries, archives, and museums to manage digital collections.
An enterprise DAM module within Adobe Experience Manager, for large organizations managing thousands to millions of brand assets across marketing channels.
Price published
Yes
No
No
No
Billed on
Annual licence per edition, not per user
Quoted per customer
No published price on islandora.ca — the core software is free open source ("free to use and always will be"). Paid options are hosting/installation/migration/support/training contracts sold by independent third-party service providers listed on islandora.ca/service-providers (e.g. Born-Digital, discoverygarden); islandora.ca itself does not publish their rates or billing units.
No public price list; sales quote required for both packages (Prime and Ultimate). Adobe's own on-premise product description sheet lists separate license metrics per component — AEM Assets itself is licensed 'Per Instance', 'Users' are licensed 'Per User', Brand Portal is licensed 'Per Brand Portal User', and Dynamic Media/Personalized Media are licensed by 'Page Views per month' — so billing is multi-metric and only available via custom quote, not a single flat per-user or per-GB rate.
Deployment
On-premise, Cloud
Cloud
On-premise, Cloud
Cloud, On-premise
Free plan
Yes
No
No
No
Free trial
No
No
No
No
Transparency index
100%
0%
Not checked
Not checked
Most common complaint
It is a broader platform than a DAM — some capability has to be built rather than switched on
Neither tiers nor ranges — only a form and a demo
Not checked
Not checked