jdAppStreamEdit (previously known as jdAppdataEdit) allows you to easily create and edit AppStream
(.appdata.xml or .metainfo.xml) files for your Application.

Features:
<ul><li>Easy to use</li><li>Full support for the Open Age Rating System (OARS)</li><li>The AppStream files are fully translatable</li><li>Releases can be imported from GitHub, GitLab, Gitea, Git Repos and NEWS files</li><li>You can view a preview in Gnome Software</li><li>You can use a existing .desktop file as template</li><li>Supports External Releases</li><li>Plugins</li></ul>