PDF annotation software development kit - AI tools

ComPDFKit provides comprehensive PDF SDKs for developers, enabling integration of PDF viewing, annotation, editing, conversion, and AI-driven document processing functionalities into applications across multiple platforms.

• Free Trial
• From 67$

ZetPDF is a high-performance .NET SDK that enables developers to create, edit, convert, protect, and print PDF documents without requiring Adobe Acrobat, featuring a 100% managed C# codebase with its own rendering engine.

• Pay Once

Advanced PDF Editor is an all-in-one PDF editing solution for Mac, offering over 40 features to edit, merge, convert, sign, and secure PDF files with ease and efficiency.

• Freemium
• From 4$

Afirstsoft PDF is an AI-powered PDF editor for creating, editing, converting, annotating, and organizing PDF documents across multiple platforms, featuring AI summarization and chat.

• Freemium

PDFjet is a lightweight, efficient PDF generation library for Java, .NET, Swift, and Go, offering cross-platform compatibility, built-in barcode support, and no deployment restrictions.

• Pay Once

PDF Reader Pro is an all-in-one PDF solution for viewing, editing, converting, annotating, and form-filling across Mac, Windows, iOS, and Android. It integrates AI features like translation, summarization, and rewriting to enhance document workflows.

• Pay Once

iText is a comprehensive PDF toolkit offering open-source and commercial PDF libraries for generating, manipulating, and automating PDF documents in Java and .NET applications.

• Freemium

CAD-KAS offers over 200 specialized software programs for PDF editing, CAD tools, business applications, and multimedia, including the popular PDF Editor with 15 million downloads.

• Free Trial

I, Librarian is an online reference manager and PDF organizer that centralizes document storage, enables full-text search, and facilitates private group collaboration for students and research professionals.

• Other