qdPM - qdPM is a free web-based project management tool suitable for a small team working on multiple projects.
Feng Office - Feng Office is a Collaboration Platform that enables you to manage your projects and business services
eyeOS - eyeOS is a disruptive desktop entirely usable from a web browser.
Collabtive - Collabtive is web-based project management software.
dotProject - dotProject is a volunteer supported Project Management application
ProjectPier - ProjectPier is a Free, Open-Source, self-hosted PHP application for managing tasks, projects and teams through an intuitive web interface
Mantis Bug Tracker - MantisBT is a free popular web-based bugtracking system
The Bug Genie - The Bug Genie is a bug tracking tool
PHProjekt - PHProjekt is a modular application for the coordination of group activities and to share informations and document via the web
TaskFreak - TaskFreak! Original is a simple web based task manager
todoyu - todoyu is the web-based way to get your tasks done. todoyu is all about bringing your team and clients together to work jointly on projects.
ZenTao - ZenTaoPMS is an open source project management system with product management, project management, bug management, testcase management, doc management, todo management and many other features in one application.
Flyspray - Flyspray is an uncomplicated, web-based bug tracking system written in PHP for assisting with software development.
phpCollab - phpCollab is an open source internet-enabled system for use in projects that require collaboration over the internet.
Traq - Traq is a PHP and MySQL powered Project Tracker, you can easily track Milestones, Versions, Bugs, Feature Requests and see how far your project has come.
SiteDove - SiteDove Free is a powerful tool for beefing up the security of your website at NO COST.
Eventum - Eventum is a user-friendly and flexible issue tracking system.
Admidio - Admidio is a free online membership management, optimized for clubs, groups and organizations.
Plandora - Plandora is a tool to help the software development process.
Jenkins - Jenkins is an application that monitors executions of repeated jobs.
Trac - Trac is an enhanced wiki and issue tracking system for software development projects.
Bugs - Simple Issue Tracking for Teams
Rukovoditel - Free web-based open-source project management tool suitable for a small team
WebCollab - WebCollab is a collaborative web-based system for projects and project management.
SOPlanning - SOPlanning is a open source and free online planning, designed for easily create/assign projects and tasks from any browser.
Burden - Burden is a full featured task management app written in PHP. The script provides an easy way to add, edit or delete tasks.
TestLink - TestLink is a web based test management and test execution system.
Kanboard - Kanboard is a project management software that uses the Kanban methodology
Snipe-IT - Snipe-IT is a FOSS project for asset management in IT Operations. Knowing who has which laptop, when it was purchased in order to depreciate it correctly, handling software licenses, etc.
Manage Your Team - MyT (Manage Your Team) is an extremely powerful project management tool
ProjeQtOr - ProjeQtOr Quality Based Open Source Project Organizer