The best alternatives to Diagrams.net are Whimsical, Flowmapp, and Mark. If these 3 options don't work for you, we've listed a few more alternatives below.
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Whimsical is the interconnected workspace for calm, focused work. Thousands of teams use Whimsical to ideate in Boards, plan in Docs, manage tasks in Projects, and share updates in Posts—without switching apps. No more juggling disconnected apps that slow you down, just seamless collaboration from idea to launch.
For anyone running workloads on AWS, Azure, and GCP, AutoCloud automates architecture diagrams, compliance checks, and drift detection. Explore insights using a 3D environment or by querying a GraphQL endpoint.
Using general-purpose diagramming tools can feel like coding on Google Docs. Terrastruct is designed to handle complexity, with a feature suite tailored to software engineers.
Quick Diagram is a tool for generating diagrams and flowcharts from text. It supports Flowchart, Sequence Diagram, Class Diagram, State Diagram, Entity Relationship Diagram, User Journey, Gantt, Pie Chart.