PDF Signing, tell me the ways

So normally if you want to sign a PDF you have to get yourself an expensive copy of Adobe. But I was amazed at how many alternatives there are.

This quick little Java app works well http://www.vromans.org/johan/software/sw_signpdf.html

Usage like so

  java -jar SignPDF.jar
      --certfile=my_cert.p12 --password=secret
      --output=signed.pdf origineel.pdf

Another cool one is this c# project that uses itextsharp located here http://www.codeproject.com/useritems/Esignature.asp

Another is this great open source sourceforge project, http://sourceforge.net/projects/portablesigner/
in a jiffy this portable signer is probably the fastest!