Domain Arrivals
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Featured in Domain Arrivals · 2026-08-15

OpenContractor OS Keeps Contractor Software on the Contractor’s Machine

opencontractoros.com ↗ · Useful Tools · score 82.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

An open-source suite of four offline desktop apps for contractor scheduling, CRM, bookkeeping, estimating, and job costing.

Why it surfaced

The suite treats local ownership as a product feature: data lives in a readable SQLite file, the core runs without an account or subscription, and AI changes arrive as proposals with a diff and undo. Its four apps pass work from lead to estimate to scheduled job to books without requiring a cloud monolith.

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The Two-Tonne Temperature Problem

August 15’s newborn domains include a live-aboard hydrogen airship with a two-tonne lift problem, a Japanese toolbox that explains its assumptions, an advisory-by-advisory Hawaiʻi hurricane archive, and a wedding-gift game about ungrateful poultry.

This is one of 1,000 discoveries in the 2026-08-15 Domain Arrivals issue.

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Three more arrivals

Potamo’s Explain-It-Yourself Toolbox potamo.net

A Japanese browser-based toolkit covering unit conversion, dates, text, code, weather, CSS, maps, learning, and more across 14 fields.

 Downtown Crowd: Is Downtown Worth It? nolapulse.com

A New Orleans convention calendar that predicts which weeks will actually fill downtown bars.

 Irugbin turns farm talk into a credit record irugbin.com

A WhatsApp-based farm ledger that turns voice notes and plain-language messages into season records, cost calculations, and lender-ready PDFs.