InstaColl.com - Instant Collaboration Office on the Web

“InstaColl is a Bangalore-based start-up founded with a singular vision - establish the first "Made by India" product brand that is globally recognized and appreciated.
Our primary focus is on finding a workable model that merges the capabilities of mainstream desktop applications (such as the Microsoft Office suite) with the collaborative nature of web-based applications - creating a best-of-both worlds scenario for end-users.”

This is an intuitive and compelling product, flexible enough for both businesses and individuals. Their data centric approach allows access to anyone with the simplest internet connection to participate. As MS Office is already a mainstay, users will not find themselves having to learn anything new.

With Google Docs et al is Instacoll able to compete? Is a corporate version available for in house deployment? Does it work with Macs and Linux?