draw.io - Online diagramming application
Conversion Crimes - Get insights on how users behave on your site or software and how they feel about it. Remove friction and increase motivation to buy.
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.
Magicul.io - Convert between Adobe XD, Figma, PDF, Illustrator, Sketch and more with 1 click
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Copysmith - GPT-3 powered content marketing that feels like magic