Daily Coding Problem - Get exceptionally good at coding interviews
Codespace - A beautiful cross-platform code snippet manager
Coding View - Coding View is live collaborative coding environmentdesigned for technical phone interviews. It features web version of Visual Studio Code, as well as access to real terminal. It has a built-in compiler for most popular programming languages.
CodeMyUI - Handpicked code snippets you can use in your web projects
HackerEarth - HackerEarth is the network of top developers across the world. They connect to start-ups, tech companies, organizations and discover the best developer jobs. They participate in programming challenges and compete against other top developers.
Creative Tim - Awesome Bootstrap freebies and templates to build better websites