Website Grader - Grade your website's strengths and weaknesses in seconds.
Smaller - Make your websites load faster
Ryte - Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.
Omniconvert - Omniconvert is an award winning CRO software that can be used for A/B testing, online surveys, traffic segmentation and web personalization
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.
Siteimprove - Consider the Siteimprove Intelligence Platform the newest member of your team.