About the directory
Why we built this, and what actually gets listed
A short explainer on the story behind Delta Hydro Tools, and the bar every submission has to clear before it goes live.
Why this exists
We built the list we wished already existed
Water engineering software is scattered across vendor sites, GitHub, university pages, CRAN, the PyPI index and a hundred half-maintained wikis. Search results favour whoever spent the most on marketing, not whoever built the most useful tool. Every practitioner ends up rebuilding the same shortlist from scratch — usually by asking a colleague.
Delta Hydro Tools is that shortlist, written down. It’s maintained by the team behind Delta Hydro Studio, and every entry is added by hand — no paid placement, no automatic listing, no pay-to-rank. If it’s here, someone judged it worth an engineer’s time.
Before you submit
Inclusion criteria
Every suggestion is reviewed by hand against the same six checks. Reading these first saves everyone time — most declined submissions fail on the first one.
It's a real, usable tool
Software, a plugin, a package, a spreadsheet calculator, a web app — something a water engineer can open, install or run. Not a company profile, a consultancy page, or a service you have to enquire about.
It does something specific for water engineering
Hydrology, hydraulics, stormwater, groundwater, water distribution, water quality, GIS or climate. General-purpose software only qualifies when the listing is a purpose-built extension — a QGIS plugin, an HEC-RAS automation script — not the host application itself.
It has a stable, direct link
Straight to the tool, its documentation, or its repository. Not a homepage that requires filling in a form to find out what the thing actually does.
Free and commercial both qualify
Price isn't the bar — usefulness is. We list open-source packages next to paid desktop software when both genuinely earn a place in an engineer's toolkit.
One listing per distinct tool
Rebrands, resellers and near-duplicates of something already listed get merged into the existing entry rather than added again.
No lead-gen, no affiliate pages
If a link exists mainly to capture an email address or route traffic somewhere else, it stays out — regardless of how relevant the topic sounds.
We say no to
- Consultancies and engineering firms — including our own — unless they ship an actual tool you can use
- Marketing or landing pages with no working demo, download or documentation to point to
- Generic productivity software with no water-engineering-specific functionality
- SEO listicles, "directory of directories" pages, and content built to rank rather than help
How review works
Every suggestion lands in a review queue, gets checked against the criteria above, and either gets added to the directory — with an email to let you know — or declined. Space here is limited to what’s genuinely useful, not everything that exists.
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