Kimai is a time-tracking app with a long history. Kimai supports an unlimited amount of users and timesheet entries, so you can handle all of your teams/departments in one easy-to-use installation.
Nextcloud Hub provides the benefits of online collaboration without the compliance and security risks. Share and collaborate on documents, send and receive email, manage your calendar and have video chats.
Dolibarr ERP - CRM is an easy to use ERP and CRM open source software package (run with a web php server or as standalone software) for businesses, foundations or freelancers.
Admidio is a free online membership management, which is optimized for associations, groups and organizations. In addition to classic user management it consists of a variety of modules.
UserFrosting is a web framework for PHP that offers a complete toolbox of programmatic components for building your application. It is a fully-functioning user management application, right out of the box.
qdPM is a free web-based project management tool suitable for a small team working on multiple projects. It is fully configurable. You can easy manage Projects, Tasks and People.
Simple open source to-do list script written in PHP and jQuery. Fast and easy task management in AJAX. Uses MySQL or SQLite database. Features: multiple lists, task notes, tags, due dates, priority...
SOPlanning is an online planning tool designed to efficiently organize projects and tasks. Assign work for each member of your team, regardless of your activity.
Create your workspace to communicate with your team : share files, calendars, publish on a newsfeed, make polls, manage tasks, send newsletters, etc.
A collaborative web-based system for projects and project management; WebCollab is easy to use, and encourages users to work together. The software is functionally elegant and secure.
UserApplePie is a free open source user management system. Its intention is to make creating your own web site easy and full of features after install.
A simple, web based address book: Addresses, e-Mails, phone numbers & birthdays. vCard and CSV export support. Homepages guessed from e-Mail. Locations linked to Google Maps...
Zenbership is open source membership software with an advanced feature set designed to help small businesses, clubs, and organizations maximize their membership rosters.
An object-oriented script to register and login users on your website, and display users currently online. It includes options to automatically login the user on their next visit.
The Ultimate Team Organisation Software is a PHP based grouware or ERP/CRM/PLM tool to manage the organizational needs of small/medium groups, teams, and departments.
phpABook is a simple address/contact management system that stores contacts and user information in a MySQL database. It has a completely customizable interface using CSS and dynamic images.
uFlex can be used to manage registrations and authenticate users with records in a MySQL database. It can perform several types of operations with registered users of a site.