draw.io - Online diagramming application
CorelDRAW Technical Suite X7 - Discover CorelDRAW Technical Suite 2019 and create technical illustrations with speed, accuracy, and precision. Download the free trial today!
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.
MagicPlan - The floor plan creation app magicplan lets you create dimensioned floor plans without actively measuring or drawing. With its Augmented Reality.
PlantUML - PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams.
Frank - Frank is a lending and borrowing platform for friends and family.