Verdict
A file upload, transformation, and delivery API with a drop-in picker for 20+ sources, for developers adding file handling to web and mobile apps.
An open-source, community-governed digital repository platform on Drupal, for libraries, archives, and museums to manage digital collections.
A flat-fee-per-account DAM and MAM with a free 500GB/5-user tier and unlimited paid users, for teams willing to pilot without much recent independent review evidence.
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
Yes
No
Billed on
Monthly subscription tiers with bundled resource allowances (bandwidth in GB, uploads counted per file, transformations per file/image operation, storage in GB, number of team members), plus per-unit overage fees once a tier's allowance is exceeded (e.g. Start plan overage is $0.2/GB bandwidth).
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.
Flat price per account by volume; the vendor states there are no per-user fees
Self-hosted: no licence fee. Hosted: a user ceiling per tier
Deployment
Cloud
On-premise, Cloud
Cloud, On-premise
Cloud, On-premise
Free plan
No
No
Yes
Yes
Free trial
No
No
Yes
No
Transparency index
Not checked
Not checked
90%
60%
Most common complaint
Not checked
Not checked
On-premise is available only in the enterprise tier, whose price is not published
The free route is genuinely free of licence fees but moves hosting, upgrades and support onto you