Rainglow Color Themes - 320+ color themes for a variety of editors and software.
Creo - Creo is a modern design tool for Mac which combines design and development.
Slack Themes - Make your Slack pretty with custom themes
Design Rails - Free, instant, custom-made logos using machine learning
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.
Practicing Rails - Learn Rails without getting overwhelmed.