Hover Zoom - Enlarge thumbnails on mouse over.
Rainglow Color Themes - 320+ color themes for a variety of editors and software.
Image Max URL - Help find larger or original versions of images, including a customizable image popup feature
Slack Themes - Make your Slack pretty with custom themes
Hover Zoom+ - Google Chrome extension for zooming images on mouse hover - extesy/hoverzoom
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.