ClickShare is described as 'Barco’s ClickShare product is a game changing way to collaborate, making meetings more productive, spontaneous and efficient. You can share content from your laptop by simply connecting a USB device and clicking a button' and is an app in the Remote Work & Education category. There are 2 alternatives to ClickShare for iPad, iPhone and Online / Web-based. The best alternative is AirPlay, which is free.
AirPlay lets you stream music throughout your entire house — wirelessly. AirPlay wireless technology will be fully integrated into speaker docks, AV receivers, and stereo systems from companies such as Bowers & Wilkins and Denon.
This page makes use of the Chromecast sender API to control Chromecasts on your local network. It provides a web interface rather than requiring you to install a native app on your devices. Links you load are accessed directly by the Chromecast.