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 visually organized, board-based DAM for photo/image-heavy creative and marketing teams, with a genuinely usable free tier and a history of shifting, steep paid-tier pricing.
A Windows-only photo cataloging tool for large image libraries (50,000+ files), built by a single developer, sold as a one-time perpetual licence instead of a subscription.
Price published
Yes
No
No
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.
Credits; users are not billed
Perpetual licence, no subscription
Deployment
Cloud
On-premise, Cloud
Cloud
On-premise
Free plan
No
No
Yes
No
Free trial
No
No
Yes
Yes
Transparency index
Not checked
Not checked
60%
60%
Most common complaint
Not checked
Not checked
The free tier is described in detail while the paid tiers are named only
Windows only, so it is out of the question for a team on Macs