Slalom – creating declarative touch interactions with constraints
Slalom – creating declarative touch interactions with constraints launched on January 13, 2015 with 96 votes, #346 of 1,772 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 11 years on.
In plain words
Slalom is a system for describing and implementing touch interactions on mobile devices and tablets using declarative constraints rather than repetitive custom code. It addresses the common problem of developers rewriting similar logic for each new gesture or interaction. The tool draws from physics simulations to enable more flexible, concise touch-driven interface development across different applications and interaction types.
written from the facts on this page · September 2026
From the sources
This page outlines Slalom , a system with prototype implementation for concisely describing and implementing a class of touch interactions. Various examples demonstrate Slalom's versatility. Slalom grew out of my previous article on how to use physics simulations to build touch-driven user interfaces . When writing that, I observed that I was writing much of the same code across the examples and that this repetitive, often inflexible code plagues most touch device engineering. Most touch interactions on today's tablets and smartphones are implemented by writing new code to handle every touch movement, which computes various transforms and updates the application's view tree or the browser's…from iamralpht.github.io
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