http://galera.ii.pw.edu.pl/docs/Snacc4Java/classdoc/
http://www.trl.ibm.com/projects/xml/xss4j/docs/axt-install.html

Code source ancienne version Apache :
http://svn.apache.org/repos/asf/directory/deceased/pre-m2/asn1-0.3.3/
http://mvnrepository.com/artifact/org.apache.directory.shared/shared-asn1

Projet open source : http://asn1forj.sourceforge.net/
Free compiler : http://sourceforge.net/projects/jac-asn1/
Classe apache harmony : http://harmony.apache.org/subcomponents/classlibrary/asn1_framework.html
http://www.monfox.com/dtmn/java-asn1-api.html
Liste d’outils : http://www.itu.int/ITU-T/asn1/links/index.htm
http://www.google.fr/search?q=ASN.1+Runtime+Encoding+for+Java&hl=fr&prmd=ivns&ei=8YGATunxIaiB4ATkscDODg&start=20&sa=N

Du source intéressant :
TupleTreeAnalyzer.java DecoderMonitor
DecoderMonitor sur Koders
where can I find the source code of org.apache.directory.shared.asn1.codec.stateful.StatefulDecoder
BinaryNotes is the open source ASN.1 (Abstract Syntax Notation One) framework for Java and .NET
ASN1 chez Bouncy Castle