TL:DR; 100% managed version of ZLIB compression library.
100% managed version of ZLIB compression library. Full C# source code is included.
VintaSoft Twain .NET SDK is the professional TWAIN scanning library for acquiring images from scanner or camera. SDK allows get a list of TWAIN devices, get information about device capabilities, acquire images from device with or w/o device UI etc.
EaseSoft PDF417 Barcode ASP.NET Web ServerControls use its internal HttpHandler to transfer barcode images directly to the client without any temporary files.It is the most efficient method to generate the barcodes dynamically.
iTextSharp DLL is an open source library to make PDF files in C# MVC, VB .Net, .Net Core projects. IronPDF (https://ironpdf.com/) provides HTML to PDF conversion including C# code examples, licenses, and documentation as an itextsharp alternative.