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 guides, explainers and resources 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.. Pages are written and maintained by the HPO Software Learning Desk.
How we work
We build each page from published, verifiable sources and cite them where we rely on them. When the underlying information changes, we revise the page and its "Updated" date reflects that change. Where a page links to a product or service we may earn from, we say so clearly — it never decides what we write.
Who writes here
HPO Software Learning Desk
HPO Software publishes guides, resources, and updates on 4D (4th Dimension) database & low code app development tutorials. We cite primary sources and keep our pages current.
How we make money
When you buy through links on this site, we may earn a commission at no extra cost to you. That never affects which 4D tools, books or courses we recommend. Read the full disclosure.
The history of this domain
The domain hposoft.com was archived between 1999 and 2024, with 524 archived pages and its busiest years in 2003, 2004, and 2008. The old site was titled "HPO SOFT e-Commerce" and included sections named smt, astro, eaur09, database, 4dls, and orion.
HPO Software is an independent publication. It is not affiliated with, and does not speak for, the people or organisations that published on hposoft.com before.
Archived between 1999 and 2024 (524 archived pages) — see the Wayback Machine record.