Fluid UI Alternatives

Prototyping and collaboration for design teams

The most stunning HTML5 app for creating resolution-independent SVG mockups, wireframes & interactive prototypes for your next project

Balsamiq. Rapid, effective and fun wireframing software.

Create fully-interactive high-fidelity prototypes in minutes that look and work exactly like your app should. Sign up for a free 15-day trial and get started.

The prototyping and specification software used by 87% of the Fortune 100. Beyond mockups, design interactive prototypes for business solutions, websites, and applications.

The prototyping tool designers have been waiting for.

Design is really about solving problems. UXPin is the UX Design Platform that gets that right.

Collaboration app for UI designers & frontend developers

Build dynamic, responsive websites in your browser. Launch with a click. Or export your squeaky-clean code to host wherever you'd like. Discover the professional website builder made for designers.

Bring your designs to life.

Pencil is an animation/drawing software for Mac OS X, Windows, and Linux.

Turn sketches, mockups and designs into web, iPhone, iOS, Android and Apple Watch app prototypes.