I'm lazy 😆
I don't want to manually visit GitHub repositories to check if there's a new version of my installed plugins. So I built a plugin that does it for me.
Plugin Update Checker automatically queries the GitHub Releases API for every installed plugin and shows a clickable update badge right in the plugin list (Admin Panel > Manage > Plugins).
Important: This works for ALL plugins that have a GitHub URL in their plugin.php - not just plugins I developed. If the plugin author set a 'url' => 'https://github.com/...' in the metadata and publishes GitHub Releases, you'll see the badge.

Git Repository of the plugin: https://github.com/markus-michalski/osticket-plugin-update-check