Kontainer, Contentstack, Uploadcare, Air

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 · Publishes a price

One of these tells you the order of magnitude before you speak to anyone, and the others do not. That difference sets how long your evaluation takes, whatever the software does.

Kontainer

Contentstack

Uploadcare

Yes

Air

Everything else

Kontainer

Contentstack

Uploadcare

Air

Verdict

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.

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 developer-first file upload and CDN/media-processing API for apps, pitched as a lighter, faster-to-integrate alternative to Cloudinary for teams that don't need its full DAM/video/AI stack.

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.

Price published

Yes

Billed on

Depends on configuration; several features are priced separately

Quoted per customer

Operations, traffic and storage, with published overage rates

Credits; users are not billed

Deployment

Cloud

Free plan

Yes

Free trial

Yes

Transparency index

20%

30%

70%

60%

Most common complaint

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

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

The free tier is stated as personal use only

The free tier is described in detail while the paid tiers are named only

“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.

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.

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.

Uploadcare The free tier is stated as personal use only — ask them to answer this in writing before the trial.

Air The free tier is described in detail while the paid tiers are named only — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.