Via:WebAppers. Officezilla. Teamwork. InstaColl: Bridging the gap between the desktop and the web. Email and Groupware - easy to install, easy to use. - Citadel.org. Windows SharePoint Services TechCenter. Task Management Software: Online Collaboration Tools For Groups. 9cays: Take the pain out of group email. eGroupWare: Home. Welcome to Grouptivity.