Business Applications:

vtiger CRM is a community-driven, fully open source, CRM software project. The aim of the project is to provide the best and most open CRM solution with the lowest total cost of ownership to small and medium enterprises.

GROUP-E is a web-based Collaboration System developed with the server-side scripting language PHP and distributed as Open Source software under the GNU General Public License (GPL)

An Ajax based Email and Web collaboration suite with the ability to share email folders, contacts, calendars, files, and carry out online document authoring with internal or external users.

Roma allows you to develop enterprise level java apps with low effort. Using the Meta-Framework approach you can integrate the latest technology in your application without modifying your domain and custom application logic.

Commercial open source customer relationship management (CRM). CRM software for sales force automation and customer support deployed on demand or on site.

Compiere Community Edition is an open source ERP solution for Distribution, Retail, Manufacturing and Service industries. Compiere automates accounting, supply chain, inventory and sales orders.

Bugzilla is a “Defect Tracking System” or “Bug-Tracking System”. Defect Tracking Systems allow individual or groups of developers to keep track of outstanding bugs in their product effectively.

Liberum Help Desk is the complete help desk solution for small to medium sized businesses and organizations. This software provides a simple, easy to use web interface for managing and tracking technical support problems.

Zivios is an open source enterprise management system with features such as a single sign on, certificate authority, user, group and computer provisioning as well as remote management of services.

Untangle is a software suite that effectively acts as a router, firewall, spam blocker, web filter, virus blocker, fishing blocker, etc …. It is easy to use and sets up in a flash.

PacketFence is a network access control (NAC) system that can be used to effectively secure small to large networks. It provides NAC-oriented features such as registration of new network devices, detection of abnormal network activities, isolation of problematic devices and remediation through a captive portal.

Insoshi is an open source social networking platform built with Ruby on Rails. The project is currently under development but already boasts a solid feature set.

Elgg is an open source social networking platform developed for LAMP (Linux, Apache, MySQL, PHP) which encompasses weblogging, file storage, RSS aggregation, personal profiles, FOAF functionality and more.

Document Management System

GROUP-E is a web-based Collaboration System developed with the server-side scripting language PHP and distributed as Open Source software under the GNU General Public License (GPL)

Open source Group Collaboration software for Enterprise and business usage. Combines the capabilities of collaboration tools like wikis, blogs, file repositories, micrologs instant discussions, other social applications into a seamless platform.

Open source workflow / business process management (BPM) software suite.

ProjectPier is a self-hosted PHP application for managing tasks, projects and teams through an intuitive web interface. ProjectPier will help your organization communicate, collaborate and get things done.

Open Workbench is a desktop application for project management and scheduling in which you can define a work breakdown structure, set dependencies and resource constraints, assign resources to tasks, auto schedule and then monitor progress.