Jikes is a compiler that translates Java source files as defined in The Java Language Specification into the bytecoded instruction set and binary format defined in The Java Virtual Machine Specification.
Eclipse is an open source community whose projects are focused on building an extensible development platform, runtimes and application frameworks for building, deploying and managing software across the entire software lifecycle. Many people know us, and hopefully love us, as a Java IDE but Eclipse is much more than a Java IDE.
The Eclipse open source community has over 200 open source projects. These projects can be conceptually organized into seven different “pillars” or categories:
1.Enterprise Development 2.Embedded and Device Development 3.Rich Client Platform 4.Rich Internet Applications 5.Application Frameworks 6.Application Lifecycle Management (ALM) 7.Service Oriented Architecture (SOA)
The Eclipse community is also supported by a large and vibrant ecosystem of major IT solution providers, innovative start-ups, universities and research institutions and individuals that extend, support and complement the Eclipse Platform.
One very exciting thing about Eclipse is that many people are using Eclipse in ways that we have never imagined. The common thread is that they are building innovative, industrial-strength software and want to use great tools, frameworks and runtimes to make their job easier.
Scala is a general purpose programming language designed to express common programming patterns in a concise, elegant, and type-safe way. It smoothly integrates features of object-oriented and functional languages, enabling Java and other programmers to be more productive. Code sizes are typically reduced by a factor of two to three when compared to an equivalent Java application.
Many existing companies who depend on Java for business critical applications are turning to Scala to boost their development productivity, applications scalability and overall reliability.
Openfire is a real time collaboration (RTC) server licensed under the Open Source GPL. It uses the only widely adopted open protocol for instant messaging, XMPP (also called Jabber). Openfire is incredibly easy to setup and administer, but offers rock-solid security and performance.
Jive Messenger is Java instant messaging (IM) and group chat server that implements the XMPP protocol.
FreeMind is a free mind mapping application written in Java. FreeMind is licensed under the GNU General Public License. It provides extensive export capabilities. It runs on Microsoft Windows, Linux and Mac OS X via the Java Runtime Environment.
As with other mind mapping software packages, FreeMind allows the user to edit a hierarchical set of ideas around a central concept. The non-linear approach assists in brainstorming new outlines and projects as ideas are added around the mind map. As a Java application, FreeMind is portable across multiple platforms and retains the same user interface, causing some amount of variation from the common interface on each platform. Mac users may notice the most difference from their traditional user interface, but a MacWorld reviewer says the software's features should still appeal to the segment of users who accept function over form.
FreeMind was a nominee for Best Project in SourceForge.net's Community Choice Awards for 2008, which featured Open Source software projects.
Doppio is a project to get Java running in the browser without any plug-ins. Right now it comprises a fairly complete VM and an implementation of the javap bytecode disassembler. (Doppio is also the Italian word for 'double', and is another name for a double espresso.)
Doppio started out as the mid-term project for a Graduate Systems Seminar. It has since taken on a life of its own, and is complete enough to run implementations of GNU Diff, LZW compression, and the Java 4 compiler. Here's what's supported thus far:
- All 200 opcodes
- Exact emulation of Java's primitive types, include the 64-bit long
- Most of the Reflection API
- File and Standard I/O
- Major JDK libraries such as String, Pattern, and HashMap.