purepdf is a porting of the java iText library. purepdf is a complete pdf library for actionscript. It supports almost all the pdf features.

• added example for creating alpha gradient colors.
• support for pdf viewers display options
• alpha transparency
• layers and layers membership
• support for pdf text rendering.
• tables ( nested tables, page split tables, table with images, etc…)
• slide show
• page transitions
• annotations
• patterns, shadings patterns (linear and gradient), spot colors, rgb color and cmyk color
• linear and radial gradients with alpha
• forms (user input forms, textfields, combo box, list, checkbox).
• paragraphs, phrases, chunks for text manipulation
• image patterns
• lists
• basic and advanced paths
• images ( png, tif, jpeg, bitmapdata, gif, animated gifs)
• afm, otf, pfm, ttc and ttf fonts (embedded and not embedded)
• metadata, page header and footers
• external, internal links
• barcodes creation ( ean-ucc 13, ucc-12, ean-ucc-8, upc-e, pdf 417, ean supplements)
• unicode, cjk fonts
• file attachments
• arabic RTL writing ( still under revision.)
• javascript
• multi column text
• page labels
• vertical text
• and most of the pdf features…

More info at google project code page: http://code.google.com/p/purepdf/