Showcase is a Moodle block type component. The sources of the project are openly available at Github.
If you have a problem with the block or you are interested in contributing an idea, you can access the following link and share it with us: https://github.com/bambuco/moodle-block_vitrina/issues
To install the component, use the package installer if available in the platform administration or download the corresponding version, unzip it in the blocks/ folder of your Moodle platform and proceed with the installation from the administration notifications page.
You can download the different versions available from here..
Once installed, you can start configuring it as described in the block documentation.