Moxtra (free) brings together real-time collaboration and personal knowledge management in an app designed to help people collect their artifacts of work or play. Moxtra lets you not only share your projects with others, but work on them together across a variety of mobile modalities. Many people compare Moxtra to Evernote or to Microsoft’s OneNote, and to be honest, there are overlaps.
There is nothing new about collaboration. Lotus Development, now part of IBM Corporation, created the first large-scale enterprise solution with Lotus Notes. Developers designed and built Lotus Notes and all other current collaboration solutions during the era of client-server computing, where internal servers hosted databases accessed by desktop computers. We now live in a post-PC world where devices need different tools and workers have widely different expectations.