WebIssues is an open source, multi-platform system for issue tracking and team collaboration. It can be used to store, share and track issues with various attributes, description, comments and file attachments. The system is easy to install and use but has many capabilities and is highly customizable.
Website: https://webissues.mimec.org/
The current development version of WebIssues can be found at https://github.com/mimecorg/webissues
Freeway is the open source eCommerce platform for selling services and products. With Freeway you can sell booking and appointments, event ticketing and subscription services as well as physical and virtual products.