Compdfkit-pdf-sdk-windows

Judgement

What it is

Building block

What it does

A .NET PDF SDK for Windows apps covering viewing, editing, annotation, forms, signatures, redaction and conversion.

Adopt it when

You are building a WPF or .NET desktop app that needs full PDF features and will budget for a commercial SDK.

Watch out

The wrapper code is open, but the SDK needs a paid ComPDF licence for production.

Ready for

Production-ready

Runs as

Library

Built with

C#, .NET and WPF

How established

Established: started 4 years ago, latest release v3.0.0.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Compdfkit-pdf-sdk-windows → Runtime → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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