Open-source alternatives to Microsoft Visio

Desktop app for diagrams and flowcharts — Official electron build of draw.io

↔ alternative to Microsoft Visio、Lucidchart

Desktop modeler for BPMN, DMN diagrams and forms — 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.

↔ alternative to Microsoft Visio、Lucidchart

Simple tool for drawing UML diagrams quickly — Free UML Tool for Fast UML Diagrams

↔ alternative to Microsoft Visio、Lucidchart

Database diagramming and automation tool. — Open source database diagramming and automation tool

↔ alternative to Lucidchart、Microsoft Visio