draw io
self-hosted, note-taking and editor tool

draw.io is a versatile diagram software that enables users to create a wide range of diagrams, including flowcharts, process diagrams, organizational charts, UML diagrams, ER diagrams, and network diagrams. It offers a user-friendly interface with a comprehensive set of tools for designing and customizing diagrams to suit various needs. draw.io supports collaborative editing, allowing multiple users to work on diagrams simultaneously. With its intuitive features and extensive library of shapes and icons, draw.io is an ideal tool for professionals, students, and anyone else needing to visualize complex ideas and processes.