Linux-Kontor is a project for the development of a free business management software suite. Core components of this suite are the commodities, bookkeeping, accountancy, and inventory management modules. Platform-independence, Internet capabilities, and scalability are the three main design requirements. The developers have decided to use Java and a three-tier client-server architecture. The data is stored in an SQL database.
Kmy-regex is an regular expression library for Java. It can compile a regular expression into bytecode and then load it into JVM on the fly. In the environments where class loading is not an option (such as applets) it can produce an interpreted (but slower) form of the regular expression.
KOJAC is a set of Java classes implementing optical elements and optics laws in order to build and simulate optical systems. It is also aimed at being a demonstrator of optics for educational purposes. Optical systems are composed of objects with defined properties that may be modified by the user through the applet's buttons and scrollbars. Such basic devices are lenses, apertures, interfaces, and may be themselves composite sets of other elements. KOJAC is able to do exact raytracing in 3 dimensions, taking into account the wavelength of the rays, and simulating real materials.
konspire is a searchable, distributed file-sharing system featuring resumable file transfers and fast, exhaustive substring searches of all hosted file names on the network. konspire is written using pure Java. Load from processing search requests is distributed throughout a dynamically connected network of servers. Several fault-tolerant features ensure system correctness and reliability.
Jonah is a two-part system for displaying headlines on your site. The backend fetches a list of My.Netscape or My.Userland style channel files, caches them locally, and generates a local html representation for each. The frontend provides an interface for viewing the generated headlines.
Printf for Java is a pure Java implementation of the famous printf data formatting function. It supports precompiled format strings for faster processing and an object-oriented data model for maximum flexibility. Printf for Java has helped hundreds of programmers port legacy C applications to Java.