Adobe Acrobat allows users to collaborate on projects, share ideas, hold meetings and presentations, convert files to PDF, and access files from anywhere through web conferencing. It has simple interfaces for tables and workspaces. For larger meetings of over 20 people, users must upgrade to the paid Adobe Acrobat Connect Pro version. Brainkeeper is a website that helps users organize school or work content into customizable workspaces, blogs, forums and searchable files that can be shared or collaborated on. It provides easy navigation, tracking of starred content, and administrative tools.