Heyming OS vs Pure Effect: Business logic as plain data

A detailed side-by-side comparison of Heyming OS and Pure Effect: Business logic as plain data. See how they stack up in pricing, features, and user ratings.

FeatureHeyming OSPure Effect: Business logic as plain data
CategoryProductivityProductivity
PricingFreemiumFreemium
DescriptionHeyming OS is a browser desktop with 50+ built-in apps — DOOM, NES, 3D Pac-Man, StepMania, a Wordle solver, a web terminal, a notepad, a paint app, and more. No install, no signup. Launches in a tab.Pure Effect is a zero-dependency effect library for JavaScript and TypeScript. Your business logic returns plain objects describing the I/O it would perform, instead of performing it. You can read those objects in a test or replay them from a failed production run, and the database is never touched until the interpreter runs them.
Tags
Heyming OsBrowser OsDoom BrowserBrowser Desktop
BusinessPureEffectLogic
Websitejoeheyming.github.iopure-effect.org
User RatingNo reviews yetNo reviews yet
Community Votes▲ 0▲ 0
Page Views1 views1 views
AddedJun 1, 2026Jun 22, 2026
Heyming OS
Heyming OS
Pure Effect: Business logic as plain data
Pure Effect: Business logic as plain data

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