SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Invision - Prototyping and collaboration for design teams
Moz - Backed by industry-leading data and the largest community of SEOs on the planet, Moz builds tools that make inbound marketing easy.
Zeplin - Collaboration app for UI designers & frontend developers
Website Checker Tech - WebsiteChecker.Tech is SaaS tool that detects SEO and availability issues of your website, making it easier for you to fix them.
Balsamiq - Balsamiq. Rapid, effective and fun wireframing software.