GitHub is a web-based Git or version control service.

Freedcamp is a web-based project management tool and organization system for single or multiple users collaborating using cloud computing.

Avaza is a beautiful online software suite with modules for Project Management, Timesheets, Expenses & Invoicing. Access from anywhere, with any device.

CodePlex is a free open source project hosting site.

Nozbe is a to-do, task, project and time management application.

Goalton.com is a platform for goal and task management.

Wrike is an online project management software that gives you full visibility and control over tasks.

Bric is software that helps you manage your professional services team’s time.

ERPNext is a free and open-source integrated Enterprise Resource Planning (ERP) software.

Skwish freelance is a project management tool packed full of features to help manage scopecreep; collaborations, finances, invoicing and teams you're working …

Mavenlink is an advanced project management, task collaboration, resource allocation, work management and professional services automation platform.