Relay JS Alternatives

Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.

Open Source

A game with a single objective: avoid colliding with the red dots.

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.

Try for free Open Source freemium

A modern responsive front-end framework based on Material Design

Open Source

Spectacular Test Runner for JavaScript

Open Source

The smash hit game! Control your cell and eat other players to grow larger! Play with millions of players around the world and try to become the biggest cell of all!

Drive your worm in massively multiplayer online game!

A UI Component library implemented using a set of specifications designed around natural language

Open Source

Slither.io is a multiplayer online video game. Players control an avatar resembling a worm, which consumes multicolored pellets, both from other players and ones that naturally spawn on the map in the game, to grow in size.

The most advanced responsive front-end framework in the world

Open Source

A utility-first CSS framework for rapidly building custom user interfaces.

Open Source

The full game includes 47 levels (plus "infinite" bonus content) across 8 distinct level...

Predictable state container for JavaScript apps

Open Source

Unlimited, on-demand design services for freelancers, startups, and agencies.