Here’s a list of plugins I’ve contributed to:
Adds a text-like widget that allows you to write shortcode in it.
Fixes the rotation of the images based on EXIF data
Handles the changes in the permalink due to change in post date by providing 301 redirection
Lets you adjust the quality of image thumbnails that WordPress generates.
Allows you to choose primary category for posts and custom post types.
Allows you to display information of a plugin in pages/posts using a shortcode