PDF generating tools

CLI / EXE tool: 

wkhtmltopdf.org

DotNet tools

hardkoded/puppeteer-sharp: Headless Chrome .NET API => Generate PDF Files

MIT license

alternative tool to Puppeteer, developed by Microsoft
Fast and reliable end-to-end testing for modern web apps | Playwright

alternative semi-free tool

QuestPDF/QuestPDF: QuestPDF is a modern open-source .NET library for PDF document generation. Offering comprehensive layout engine powered by concise and discoverable C# Fluent API. Easily generate PDF reports, invoices, exports, etc.

interesting dual-license: free for business with revenue < $1M, otherwise paid

QuestPDF/LICENSE.md at main · QuestPDF/QuestPDF

The Easiest Way to Create PDFs in .NET - YouTube

a good JavaScript tool, with MIT license, generating PDF directly, without converting from HTML 

PDFKit.org

foliojs/pdfkit: A JavaScript PDF generation library for Node and the browser