EGroupware is a Web-based groupware suite. It contains many modules, including Calendar (personal calendar and group scheduling, notifications and alarms), Mail (IMAP only), InfoLog (todos, notes, and phone calls linked to contacts/CRM), Contacts (an address book for storing and sharing contact information), ProjectManager, Tracker (bug or incident tracking), TimeSheet, SyncML, CalDAV & CardDAV support, and SiteMgr content management
eHour is a Web-based time registration tool for project-based businesses. The primary objective is to keep time tracking as simple as needed while still being very effective at measuring and reporting the amount of time your team spends on a project. eHour is available as a standalone version or a WAR file, which you can deploy in your existing environment. eHour is JVM (Java & Scala) based.
"fgallery" is a static photo gallery generator with no frills that has a stylish, minimalist look. It shows your photos, and nothing else. There is no server-side processing, only static generation. The resulting gallery can be uploaded anywhere without additional requirements and works with any modern browser.
The Apache Open For Business Project is an enterprise automation software project that includes ERP, CRM, E-Business/E-Commerce, SCM, MRP, and CMMS/EAM functions. It is a foundation and starting point for enterprise solutions and can certainly be used out of the box, but is also great for creating specialized applications.
Web Calendar is a powerful group calendaring and scheduling system. It is a Web based application that makes it easy to publish and manage calendar events on the internet. It includes an impressive set of features, including an easy to use interface, rich functionality, and sophisticated scheduling. It is a CGI application. It runs under your Web server, so to use it, all you need is a browser. There is no proprietary software that needs to be installed on the client side. Web Calendar runs under Unix and Windows.