RadiantQ
RadiantQ is a privately held company with offices in different time zones to serve all the corners of the world with high quality .NET based software components. Its primary goals are quality and service. At present RadiantQ is focused on the development and marketing of rich and interactive Gantt components for the .NET development community.
Handsoncode
Handsoncode is a software development company based in Pomeranian Technology and Science Park in Gdynia, Poland. It provides consulting services and on-demand development
ZingGrid
ZingGrid's parent company, ZingSoft, is lead by Thomas Powell, noted JavaScript author, web-development professional, and professor in the Computer Science and Engineering department at the University of California, San Diego. Initially formed as ZingChart, Inc. after being incubated within San Diego's oldest Web consultancy (PINT.com), the company was renamed to ZingSoft in 2018 to reflect its increasing product line. ZingSoft is as an independent California corporation, headquartered in San Diego. The bulk of the team is in San Diego, but they also have team members in northern California, Romania, and India.