SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Dynamic Yield - Personalization & customer experience management
Ahrefs - Ahrefs is a toolset for SEO and marketing. We have tools for backlink research, organic traffic research, keyword research, content marketing & more. Give Ahrefs a try!
Optimizely - A/B testing you'll actually use.