Apps similar to reladraw include yEd Graph Editor, which is free. Other options are PlantUML, Mermaid, quiver diagram editor and Graphviz. There's no shortage of Diagram Editors like reladraw, with more than 25 alternatives for the web, Windows, Linux, Mac and self-hosting.
Transforms plain descriptions into editable Mermaid diagrams, mindmaps, and UML models directly in the browser with instant or conversational modes, live code preview, Markdown, OPML, SVG, and PNG exports, clipboard sharing, and multilingual support.
China
PhotoDiagram allows you to generate clean SVG diagrams from photos of your drawn diagrams on paper. Easily upload and convert your diagrams.
While coding with AI assist, I noticed bigger projects need something more rigid as context so the AI coder doesn't stray away when I try to add new features. You know, to keeps its memory fresh and not change the stuff that already works.
Finland
EU
Evernox is a browser-based tool for visually designing and managing relational databases with powerful features like real-time collaboration, AI-assisted SQL queries, and code generation in multiple languages and ORMs.
AustriaEU
Diagramly is an innovative tool that uses AI to convert text descriptions or images into editable diagram code. It supports popular formats like Mermaid and ZenUML, allowing users to easily create and maintain professional diagrams.
United Kingdom
Schema Visualizer is a collaboration platform for teams to visualize data schemas in JSON or Prisma and API schemas in Protobuf and GraphQL and generate graphs, ER-diagrams for real-time collaboration internally and externally.
United States
I got tired of opening Lucidchart or draw.io every time I needed a quick sequence diagram — fighting with boxes and arrows for something that should take two minutes. SeqDiagram is the alternative: you just write the flow as text, and the diagram appears on the right as you type.
Sirena is a free, open-source editor for Mermaid diagrams. It renders text-based diagrams as you write and lets you edit elements directly on the drawing. You can adjust shapes, colours, layout and typography, and start from built-in examples.
SpainEU
WorksCove ERD is a browser-based ERD tool for working with databases that already exist. Paste your SQL DDL and it generates both an entity-relationship diagram and a table specification document, which can be shared with a single link that always reflects the current schema.
South Korea
