Siteimprove - Consider the Siteimprove Intelligence Platform the newest member of your team.
Koalati - Automated website testing and quality control tools for developers and agencies.
Monsido - Monsido is an all-in-one platform that delivers the insights you need to build a better web experience for your visitors
RankScience - Advanced Content Optimization Software for SEO
Templafy - Document assembly & management software
WAO - WAO.io offers web analytics and optimization solutions.