Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Smaller - Make your websites load faster
Timber - Open source material design music player
Website Grader - Grade your website's strengths and weaknesses in seconds.
Watchman Monitoring - Watchman Monitor is a powerful and easy-to-use, system monitoring & reporting tool.
Checkbot - Checkbot will boost the SEO, speed and security of your site by checking you're following 50+ web best practices. Browser extension with free and paid plans.