Java
http://www.java.com/pt_BR/download/installed.jsp?detect=jre&try=1
Adobe Reader
http://get.adobe.com/br/reader/
Assinador Externo
https://e-processo.tce.sp.gov.br/e-tcesp/download/AssinadorExterno.jar
Visualizador de documentos p7s
http://www.downloadcertisign.com.br/DocumentSigner/Visualizador/Certisign_Visualizador_de_Documentos.exe
PDF SAM
http://www.pdfsam.org/?page_id=32
CutePDF Writer
http://www.cutepdf.com/products/cutepdf/Writer.asp