ComPDFKit
ComPDFKit enable developers to integrate PDF Annotations and Format Conversion, Digital Signature, Smart Forms, OCR, Redaction, and more in to their applications on Windows, macOS, iOS, Android, and the web through their PDF SDKs. Their aim is to offer the most comprehensive library to shorten the project development cycle and to continuously improve their SDK products to meet developer's future requirements as they change and projects evolve.
Jugaad
RadaeePDF SDK is a great PDF rendering and manipulation tool for developers. If you develop mobile or desktop applications the RadaeePDF SDK framework is the "Swiss Army knife" to handle PDF files. More than 6,000 applications are running the SDK on Android, iOS and Microsoft Windows UWP.
Codejock Software
Codejock Software formed in 1998 with the simple goal of making software development easier and cost effective. Its primary focus was to provide Windows developers with professional user interface components for their desktop applications. Today, Codejock continues to lead the way by providing cutting-edge interface components that empower customers with the tools to quickly deliver a polished presentation. Its products are used by thousands of customers around the globe helping them to save time and money as they produce professional applications.
Froala
Froala builds editing software for a better user experience and fast development, taking the pain out of developing editing software for rich text and web pages. Froala have re-imagined the website editing experience from its roots by creating an outstanding mobile friendly WYSIWYG HTML Editor which is used by many of the Fortune 100 companies.