Thunderhead.com - Thunderhead provide a new generation of powerful SaaS solutions for customer engagement and customer experience management.
draw.io - Online diagramming application
Haeppie - haeppie is made for Sales & Customer Success Teams - Turn buyer journeys into more revenue and get all decision makers on the same page with haeppie Sales Spaces.
LucidChart - LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.
Sendtrumpet.com - Stop wasting hours creating sales decks. Design personalised, trackable sales pods in just a few clicks: Think microsites for salespeople Shopify + Canva + Slack, all combined to help you close more deals, faster.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.