Officially Supported Plugins
BestRedmineThemes work with all 3+ Redmine versions (including 4.x). Since they have been developed using the latest design and development standards, they will also look great with most Redmine plugins.
Redmine UP plugins
Redmine UP CRM plugin →
Manage contacts and sales: relate tasks with customers, like a CRM.
Redmine UP Helpdesk plugin →
Convert your Redmine projects in a Helpdesk suite.