Redmine Project Management
Redmine is an open source project manager tool that includes version control systems, repository browser and diff viewer. It can handle several projects with one instance. Among its features are multiple users and roles, privacy levels for each project (public or private), modules, flexible control, issue tracking, workflow transitions, Gantt charts, calendars, time tracking, custom fields, notifications, and more.
Redmine can be connected to third party services like Trello, Asana, Slack, Jira, Zapier, and others via integrations.