AquaCrop (open source)
Software tool
- Active
- Free
The open Python implementation of FAO's crop-water productivity model.
Model yield against water before you commit either.
Visit ↗Checked Aug 30, 2026
The Agriculture Resource Library · One search, every shelf
The card catalog.
16 entries
BeardedTinker
Publication / media
- Active
- Free
The one established maker channel running a sustained Home Assistant automate-my-land arc in 2026: vineyard, rain tanks, watering.
Watch HA meet actual land, weekly.
Visit ↗Checked Aug 30, 2026
Bruce Bugbee / Apogee Instruments channel
Publication / media
- Active
- Free
Measurement science for growers: PAR, soil moisture, and Bugbee's lighting lectures, rigorous and active.
University-grade instruction on measuring light and water, free from an instrument maker.
Visit ↗Checked Aug 30, 2026
Calculators: Water, nutrients & feed (13)
Software tool
- Active
- Free
- Ours
13 free tools for water, nutrients & feed, including Brix Refractometer Guide, Tank-Mix Compatibility Checker, Compound Lookup.
Pick the tool shaped like your question and run it in the browser.
Visit ↗Checked Aug 30, 2026
CleanWateR3 greenhouse water resources
University program
- Active
- Free
The university alliance on greenhouse and nursery irrigation water: quality, treatment, recycling, and runoff.
Diagnose water-quality trouble in recirculating systems before it wrecks a crop.
Visit ↗Checked Aug 30, 2026
Climate Smart Farming (Cornell)
Software tool
- Active
- Free
Cornell's suite of climate decision tools for Northeast farms: growing degree days, water deficit, freeze risk.
Run the water deficit calculator and know when to irrigate.
Visit ↗Checked Aug 30, 2026
FarmBot
Hardware
- Active
- Paid
The open-source CNC garden robot that seeds, waters, and weeds raised beds; hardware plans and software all free, used by five hundred schools.
A garden that tends itself, or the best robotics teaching platform agriculture has.
Visit ↗Checked Aug 30, 2026
GOAT (Gathering for Open Agricultural Technology)
Community
- Active
- Free
The commons of open agricultural technology: a forum where the farmOS, OpenTEAM, and farm-hacker worlds meet, and a biennial gathering (next: December 2026, Seabrook Island, South Carolina).
The watering hole. If you build open tools for farms, these are your people.
Visit ↗Checked Aug 30, 2026
Monnit
Distributor / manufacturer
- Active
- Paid
The Salt Lake wireless sensor manufacturer: affordable temperature, humidity, and water sensors with cloud alerting.
Commercial-grade sensors for barns and coolers when DIY is not the mood.
Visit ↗Checked Aug 30, 2026
NeverDry
Software tool
- Active
- Free
A new scientific water-balance irrigation integration for Home Assistant, releasing weekly since spring 2026.
The newest thinking in water-balance irrigation, free and moving fast.
Visit ↗Checked Aug 30, 2026
OpenET
Data / API
- Active
- Free
Satellite-measured evapotranspiration at field scale across forty-eight states, with the FARMS tool for individual farmers and a REST API.
See how much water your fields actually consumed, monthly, free. This was thousands of dollars a field a decade ago.
Visit ↗Checked Aug 30, 2026
Pesticide Properties DataBase
Dataset
- Active
- Free
Free academic data on eighteen hundred active ingredients: environmental fate, bee toxicity, leaching potential. The numbers behind the label warnings. European regulatory fields differ from US status.
Compare two actives on bee toxicity or groundwater risk before choosing. Virtually unknown outside academia.
Visit ↗Checked Aug 30, 2026
Rain-Flo Irrigation
Distributor / manufacturer
- Active
- Paid
The Lancaster County manufacturer and dealer: drip supplies plus the vegetable plasticulture iron, mulch layers and water-wheel transplanters, at Plain-community prices.
The plasticulture standard for market growers, built where practicality is a virtue.
Visit ↗Checked Aug 30, 2026
Resource Innovation Institute
Organization
- Active
- Free
The nonprofit benchmarking energy and water efficiency in controlled environment agriculture: free best-practice guides on lighting, HVAC, and water plus PowerScore benchmarking.
Free engineering-grade guides to cut your grow's power and water bills.
Visit ↗Checked Aug 30, 2026
Smart Home Junkie
Publication / media
- Active
- Free
Current, competent Home Assistant tutorials whose 2026 garden-watering guide took the top search slot in weeks.
The freshest HA irrigation walkthroughs going.
Visit ↗Checked Aug 30, 2026
Smart Irrigation for Home Assistant
Software tool
- Active
- Free
Evapotranspiration-based watering duration for Home Assistant: it does the FAO-56 math against real weather so you water what the plants actually used.
Irrigation that follows the weather instead of the calendar, free, in the platform you already run.
Visit ↗Checked Aug 30, 2026
Prefer to browse? Start at the Library front door and pick a shelf. Missing something? Suggest a resource.