system ui

Lunacy is a free all-in-one next-gen vector editor for UI, UX, and Web design.

Design app for UX/UI for iOS and Web.

Previously known as YosemiteRevert. Reverts icons and UI elements to those of prior OS X versions (was YosemiteRevert).

A powerful set of tools to explore the UI down to the pixel.

Based on eMule with better UI and faster download speeds.

The Open Source 2D CAD System For Everyone

Accounting for the German tax system.

Complete e-book library management system.

Professional media production system.

Precision solar-system simulator/calculator with interactive 3D views.