RELapps.net

Free Project Time Tracking Software

Some of the features

Self-hosted web application
The application runs in a Servlet Container such as Tomcat
Data is stored in a relational database (MariaDB, MySQL or Postgresql)
Definition of users and groups
User authentication with LDAP
Roles and groups to control the permissions
Hierarchical definition of projects
Work-calendar definition with holidays and work hours
Private individual rich-text (markup) diary
Printing of time-sheets with annotations
Reports (Excel and Open Document Format ODF)
Export and import between databases
Web service API (example Java and Python applications)
Easy to install as a Docker container, see the ptrac page on Docker Hub for more details.
Free of charge (no ads)