I posted some time ago on Zoho. This company offers extraordinary services to work and collaborate online. They keep upgrading an amazing portfolio of solutions with which you can do almost anything you can dream of. Fast everything is free, very powerful and easy to use. In one single place you find all the necessary tools to create your virtual notebook, spreadsheets and word documents, databases, projects, to-do-lists, presentations, wikis. You can also chat, mail, organize meetings and manage your business. I tried today the database which is amazing as regards to its power and ease-of-use. And what is especially interesting, those open tools communicate with each other and with external applications, you can set all kinds of alerts (mail/RSS) and define how you interact with other people. Definitely THE application for online work. Better than the Google suite.