Piwigo, PhotoShelter, Contentstack, Kontainer

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.

Piwigo

Yes

PhotoShelter

Contentstack

Kontainer

Everything else

Piwigo

PhotoShelter

Contentstack

Kontainer

Verdict

A self-hosted, permission-based photo/video catalog with album hierarchies, tagging and a large plugin ecosystem, for archives and small orgs willing to maintain their own server as the library grows.

A cloud portfolio and image-storage platform for individual photographers, with client galleries and built-in print/licensing sales.

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.

A Nordic/European DAM, with optional PIM, aimed at mid-market brand, retail and ecommerce teams wanting fast onboarding without heavy IT involvement, backed by a 30-day no-commitment trial.

Price published

Yes

Billed on

Flat price per account by storage; users are unlimited

Quote-only. Priced per named "Library Seat" (2-5 seats depending on tier, custom for Enterprise) plus a storage allotment per tier (1TB-5TB, custom for Enterprise) and a cap on "Advanced Integrations" (0 to unlimited). Unlimited invited/contributor users and unlimited Social Content Publisher seats included on all/most tiers. Annual or monthly billing toggle shown on the pricing page, but no dollar amounts are published — all tiers show a "Get Pricing" CTA to a demo/sales call.

Quoted per customer

Depends on configuration; several features are priced separately

Deployment

On-premise, Cloud

Cloud

Free plan

Yes

Free trial

Yes

Transparency index

100%

Not checked

30%

20%

Most common complaint

A ten per cent price rise is announced for 1 September 2026

Not checked

A free start exists, but the terms for moving to a paid tier are not on the page

Feature-level add-on pricing makes the final figure hard to anticipate before a quote

“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.

Piwigo A ten per cent price rise is announced for 1 September 2026 — 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.

Kontainer Feature-level add-on pricing makes the final figure hard to anticipate before a quote — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.