Installation instructions can be found here:
https://groupoffice.readthedocs.io/en/latest/install/install.html
Group Office is an open source groupware application. It makes your daily office tasks easier. Share projects, calendars, files and e-mail online. It is a complete solution for all your online office needs. From a customer phone call to a project and finally an invoice. The support system helps to keep your customers happy.
Group Office is fast, secure and has privacy by...
FreelancerBooks -Project Management for Freelancers and Agencies
FreelancerBooks is a free, web-based project management system written in PHP with MySQL database back end. FreelancerBooks was initially designed for freelancers and agencies but it can be used for any professional service provider/organization. It will allow the freelancers/managers to have full control of the projects from client lead to completion. Freelancer book features include:
Download the latest version from:
http://www.freelancerbooks.com
100% Free Cloud Version
http://www.freelancerbooks.net
...But, this one is completly free, open source and responsive.
With projet you can manage your projects and tasks
easy, keep a clean overview without too much "Features".
Additonal, projet is not Cloud based, so you can install it on any webserver which Supports PHP > 5.3 and Mysql(i).
Object oriented programming Standards was used, with the amazing codeigniter php Framework.