Top DIAGRAM GitHub Repositories & Tools (2026)

Virtual whiteboard for sketching hand-drawn like diagrams

Official electron build of draw.io

Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown

A Unicode canvas for humans and AI. Draw diagrams, interfaces, and slides as editable text.

Stop letting AI code blind. Map the architecture before every change with Birdview.

Generate diagrams from textual description

Free, simple, and intuitive online database diagram editor and SQL generator.

Digital logic design tool and simulator

Interactive architecture diagrams for codebases

A modeling solution for BPMN, DMN, and Forms based on bpmn.io. As a companion tool to your favorite IDE it supports you in implementing solutions with Camunda.

The missing pieces for Unreal's PCG. Graph theory, advanced pathfinding, spatial ops, filtering, asset management, and more.

OpenCutList is a SketchUp Extension for automating the generation of cut lists for woodworking projects.

The MIT-licensed infinite-canvas whiteboard SDK. An open-source tldraw alternative — no license fee, free for commercial use. React, React Native, and plain JS.

A live database structure viewer for Laravel that renders your schema as a scrollable, zoomable ER diagram. Structure only, never data.

Umple: Model-Oriented Programming - embed models in code and vice versa and generate complete systems. Save yourself lots of coding. Do it collaboratively online in UmpleOnline, in an IDE or on the command line.

Generate Mermaid ERD from your Ruby on Rails application.

Repo Laboratório de Desenvolvimento de Software

Lightweight Knowledge Base and Feed Reader.

rack layout designer

Where data access meets operational intelligence