Atomize by Quarkly - Library for creating atomic react components
WaveShop - Open source audio editor
Bootstrap - Simple and flexible HTML, CSS, and JS for popular UI components and interactions
TwistedWave - TwistedWave is one of the unique audio editors that allow you to edit your music file online without any installation.
Bulma - Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
Audacity - Audacity is a free and open-source audio production software suite that includes a surprising array of editing tools and recording systems.