Qt - Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.

PHPRad - PHPRad is an advanced application development environment capable of generating complete applications in PHP using various databases. Great tool for professionals, the best tool for beginners. Little or No Coding Experience Required

FLTK - Fast Light Toolkit - Fast Light Toolkit (FLTK)

Instagantt - Instagantt is a powerful and intuitive Gantt chart tool to enable teams to plan, manage and visualize their projects easily. Manage your schedules, tasks, timelines, and workload like a Pro. Try it for free.

wxWidgets - wxWidgets: Cross-Platform GUI Library

GanttPRO - GanttPRO is online Gantt chart software for project management. CEOs, project managers, and teams use it every day to solve project management challenges.