html2pdf.app - HTML to PDF conversion API
pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
monday.com - The most intuitive platform to manage projects and teamwork
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Ideanote - Ideanote is the #1 rated Idea Management solution for companies of all sizes. Collect, develop and manage more of the right ideas from customers and employees to drive your growth.
Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents