PDFium vs Spire.PDF

PDFium plans

• PDFium (Apache License 2.0)Free

Spire.PDF plans

• Free EditionFree
• Pro Edition — Developer Small Business, with free support$999, paid once
• Pro Edition — Developer Small Business, with paid support$1,498, paid once

Pick PDFium if…

You want what its maker publishes above — check its page for the details.

Pick Spire.PDF if…

You want what its maker publishes above — check its page for the details.