PicaJet
Search Build shortlist

Filestack, PhotoPrism, Contentstack, Islandora

Side by side on what we have verified on each vendor’s own pages. Where a fact was not checked, the table says so rather than leaving a blank that reads as “no”.

What decides it · Runs on your own servers

If the files genuinely cannot leave your infrastructure, this is not a close race — the platforms marked No below should not be on the call at all.

Filestack

No

PhotoPrism

Yes

Contentstack

No

Islandora

Yes

Everything else

Filestack
PhotoPrism
Contentstack
Islandora
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.
A self-hosted, single-container photo indexer under AGPL/commercial licensing, for people who want a private on-hardware archive without Google-Photos-level AI tagging or mobile app polish.
An enterprise headless CMS and composable DXP for developer-led teams needing multi-channel content delivery, with a native asset-management module that's newer and thinly reviewed.
An open-source, community-governed digital repository platform on Drupal, for libraries, archives, and museums to manage digital collections.
Price published
Yes
Yes
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).
Subscription per edition, billed annually
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.
Deployment
Cloud
On-premise, Cloud
Cloud
On-premise, Cloud
Free plan
No
Yes
Yes
No
Free trial
No
No
No
No
Transparency index
Not checked
100%
30%
Not checked
Most common complaint
Not checked
The gap between the free edition and the first paid one is wide: €200 a month
A free start exists, but the terms for moving to a paid tier are not on the page
Not checked

“Not checked” means exactly that: we have not verified it, not that the platform lacks it. Every other value was read off the vendor’s own pages on the date shown on each platform page.

What to ask on the demo

One question per platform, drawn from what actually goes wrong with it — not a generic checklist. Vendors run the demo; this hands the agenda back to you.

PhotoPrism The gap between the free edition and the first paid one is wide: €200 a month — ask them to answer this in writing before the trial.
Contentstack A free start exists, but the terms for moving to a paid tier are not on the page — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.