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.
Intellibase.io - Elevate your product strategy with AI-driven user feedback analysis
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
Doocs - Publish product documentation in minutes
Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents
UserVoice - UserVoice integrates easy-to-use feedback, helpdesk, and knowledge base management tools in one platform that empowers users to speak and companies to understand.