Creating/editing PFDs or P&IDs in Inkscape

• draw.io

  130 38,525 8.5 JavaScript

  draw.io is a JavaScript, client-side editor for general diagramming.

  

I love Inkscape but in your case it will be difficult for maintaining connections while moving objects, the best free alternatives that I could find are dia and drawio, personally I used dia a lot but now it's abandoned so I'm using drawio, you can install the desktop version of drawio and use it offline for free.

• drawio-desktop

  125 46,687 8.6 JavaScript

  Official electron build of draw.io

  

I love Inkscape but in your case it will be difficult for maintaining connections while moving objects, the best free alternatives that I could find are dia and drawio, personally I used dia a lot but now it's abandoned so I'm using drawio, you can install the desktop version of drawio and use it offline for free.

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

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