VPT
MadMapper
QLab
Resolume
HeavyM
MapMap
Pure Data
Freej
Raphael
D3.js
p5.js
Paper.js
Highcharts
Snap.svg
Google Charts
RAWGraphs
Raphael might be a bit more popular than VPT. We know about 2 links to it since March 2021 and only 2 links to VPT. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Video projection tool can do that for free. https://hcgilje.wordpress.com/vpt/. Source: about 5 years ago
VPT8 might be what you're looking for. Source: about 5 years ago
You could also directly use libraries like Raphael or D3(lots of the tools around use D3.js as their core rendering library) if you just want help with drawing the SVG elements and connectors ... That is, if you're going to pull the data from the DB, decide in your app what each shape should be and where it should be on the page, etc. Integrating and driving these directly from Angular isn't trivial, but there are... Source: almost 5 years ago
In those darker times I used Raphaël to build charts and drag-drop UIs. Maybe check it out? Source: about 5 years ago
MadMapper - The Mapping Software
D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
QLab - QLab, Live show control for Mac OS X.
p5.js - JS library for creating graphic and interactive experiences
Resolume - Resolume is an application for live video performances.
Paper.js - Open source vector graphics scripting framework that runs on top of the HTML5 Canvas.