About HPO Software
Step-by-step 4D database and low-code app building guides — from your first table to a working business app.
HPO Software publishes independent, hands-on reviews and buying guides for Database developers, citizen developers and small-team IT builders learning the 4D platform — people who need to design tables, build forms, wire up value lists and ship custom business apps without a full engineering team.. We buy the products we recommend, test them in real conditions, and rank them on the criteria that matter — not on commission size.
How we test
Every review follows the same process: define the use-cases our readers care about, source competing products, test each against a consistent rubric, and document the trade-offs. When a product wins, we explain exactly who it's right for — and who should skip it.
Who writes here
HPO Software Team
HPO Software publishes guides, resources, and updates on 4D (4th Dimension) database & low code a. We cite primary sources and keep our pages current.
How we make money
Some links on this site are affiliate links: if you buy through them we may earn a commission at no extra cost to you. This never affects what we recommend. See our affiliate disclosure for details. This never affects our rankings — see our full disclosure.