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.
Docotic.Pdf - Docotic.Pdf is a high-performance C# PDF library for .NET. You can use it to create, read, and edit PDF documents in .NET Core, ASP.NET, Windows Forms, WPF, Xamarin, Blazor, Unity, and HoloLense applications.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request
IronPDF - SDK for creating and editing PDFs.
Tcpdf - TCPDF: Open Source PHP Class for generating PDF documents
Pen2txt - Transform handwritten notes into digital text with Pen2txt: the ultimate AI companion for flawless Handwritten Text Recognition (HTR). Combining OCR and AI for accurate, searchable, and editable results. Ideal for anyone digitizing documents.