Novation's new Web interface means you can play with their Launchpad grid with just a browser, or just browser plus hardware.
Novation Puts Launchpad in a Keyboard, Makes iPad Apps Part of the Experience [Q+A] - CDM Create Digital Music
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Novation Launchpad Pro Demo by Sweetwater Sound
Novation Launchpad X, mini are the latest take on the hit music grid controller - CDM Create Digital Music
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New Novation Video on Using Launchpad Custom Modes – Mark Mosher Multimedia
Launchpad Pro Grid Controller: Hands-on Comprehensive Guide - CDM Create Digital Music
Adorama - Save $40 on Novation Launchpad X! #Novation Shop Now