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!

Bugsee - See video, network & logs leading up to bugs or crashes

Smaller - Make your websites load faster

Buglife - Seriously awesome bug reporting for iOS apps

SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters

Instabug - The top apps in the world rely on Instabug for beta testing, user engagement and crash reporting.