Domain Arrivals
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Featured in Domain Arrivals · 2026-08-16

PaperCalc — Papers You Can Run

papercalc.org ↗ · 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

PaperCalc turns published research equations into interactive browser-based calculation tools.

Why it surfaced

Its first tool walks users through scaling tangential flow filtration perfusion systems, with live equations and results checked against the cited paper. The site keeps calculations in the browser, stores scenarios in URLs or downloadable files, and requires no account.

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The 240-Material Organ

August 16’s newborn domains include a 240-material perfume organ, a repeatedly saved JPEG cat, a ski tracker designed by a 15-year-old, and a searchable page claiming to contain 148,303 prescription records.

This is one of 1,000 discoveries in the 2026-08-16 Domain Arrivals issue.

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Fall Line Counts Every Foot on the Mountain falllineskiing.com

Fall Line is a purpose-built ski tracker that records vertical, runs, and speed from a small one-button device, without keeping a phone running all day.

 299 WORKS: A Model Maker Builds the Tools He Needed 299modelworks.com

A Japanese maker portal combining scale-model galleries, detailed build journals, Blender add-ons, 3D-printing experiments, and a searchable paint reference tool.

 Sugarcane's Weather Station passingweather.com

A private, on-device mood-and-wellbeing notebook that turns a day into a small weather report.