How to download Sonic Workbench?
The application is now called AUREA SONIC ESB WORKBENCH and it's available for testing from the official website. I recommend you visit the website to find additional information. Use the link below to reach the product page. Once it's loaded, click on Try it and follow the procedure then you will have the possibility to download it.
Product page: https://www.progress.com/products/openedge/solutions/application-integration/aurea-sonic-esb-workbench