Verdict
A disk-native photo cataloguer and batch editor sold as a one-off perpetual licence, for photographers with large libraries who don't need Lightroom/Capture One-level RAW editing.
An open-source, community-governed digital repository platform on Drupal, for libraries, archives, and museums to manage digital collections.
A cloud DAM billed by storage and configuration rather than seat count, aimed at agencies and distributed marketing teams with large or growing user bases where per-seat pricing would balloon.
An open-licence, self-hosted DAM for teams with in-house server admin capability, trading a free licence for the time to run upgrades, tune dependencies and troubleshoot it themselves.
Price published
Yes
No
No
No
Billed on
One-off perpetual licence; a cloud subscription is sold separately
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.
Not per user — the vendor states unlimited users and permission groups
Self-hosted: no licence fee. Hosted: a user ceiling per tier
Deployment
On-premise
On-premise, Cloud
Cloud
Cloud, On-premise
Free plan
No
No
No
Yes
Free trial
Yes
No
No
No
Transparency index
90%
Not checked
20%
60%
Most common complaint
The published prices are promotional and dated; list price is roughly double
Not checked
The promise not to charge per user is prominent, but there is no figure to compare it against
The free route is genuinely free of licence fees but moves hosting, upgrades and support onto you