The current versions of the ADELE tool (see the project site) brings some new import options. Now RSS feeds and Emails can be imported to ADELE. See the new Video at Youtube to see how the RSS feed import can be used together with the wordcloud visualization.
More than two years ago the last version of the json4sapnw library was published. Json4sapnw is a Addon for ABAP based SAP NetWeaver systems and it is free for the SAP community.
The new version includes an HTTP client implementation to execute RESTful JSON Webservices with only a few lines of code. Some other optimizations and bugfixes are included too.