Flowkit - Sketch library for user flows/content maps/annotations
SE Ranking - All-in-One cloud-based SEO software for agencies, marketing teams and webmasters
Visual Flows - Simple design process can be here.
DeskAlerts - Send alerts to any corporate device: PCs, phones, tablets, etc.
Flow - Stop managing projects from your inbox.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.