Create and manipulate PDFs, merge documents, digitally sign, create/fill AcroForm fields, PDF/A and PDF/UA generation, encryption (incl. FIPS-compliant crypto), barcode generation, SVG embedding, content redaction, and (via separate add-ons) OCR and HTML/CSS-to-PDF conversion.
Flagship successor to itextpdf (iText 5). Dual-licensed AGPL (open source) / commercial — AGPL requires derivative works to also be AGPL-licensed.