gnu.hylafax implements the HylaFAX client network protocol in pure Java. With it, Java applications can access a HylaFAX server in various ways, such as queueing FAX jobs, checking server/job status, and retrieving FAX files. The gnu.hylafax distribution also includes gnu.inet.ftp, a pure Java implementation of FTP client protocol (RFC0959).
HtmlLayout is a Java LayoutManager that allows you to specify the layout and resize behaviors of your components using a simple html-like syntax (no need to learn another language). HtmlLayout is similar to the GridBadLayout included with the JDK except that it is reasonably easy to use.
Jacomma is a framework for developing network-aware, mobile, reactive information agents with heterogeneous communication capabilities. It currently uses the ICM agent communication infrastructure. It offers transparent ICM bindings for Java, and includes a lightweight agent execution environment.
Jmol is a Free, Open Source molecule viewer and editor. It is a collaboratively developed visualization and measurement tool for chemical scientists. Jmol is an active project, and there are new features being added to it on a daily basis. Users are encouraged to modify it to fit their needs and to contribute their changes to the project.
jQKat is a simple Java class to obtain data from the free RadioShack CueCat(tm) bar code reader in standard format. It returns a String of the actual bar code data. It has been tested against many books and routine household products. It can also decode strings that have already been received from the CueCat reader.