Dcoder

Dcoder is an online compiler, a cloud based IDE for mobile and desktops, where one can code and learn algorithms. Now code, compile, run anytime anywhere.

KDevelop

KDevelop is a free, open source IDE (Integrated Development Environment) for Linux, Solaris, FreeBSD, Mac OS X and other Unix flavors.

MonoDevelop

MonoDevelop enables developers to write desktop and web applications on Linux, Windows and Mac OS X.

Netbeans

NetBeans IDE 7.0. Develop desktop, mobile and web applications with Java, PHP, C/C++ and more. Runs on Windows, Linux, Mac OS X and Solaris. NetBeans IDE is open-source and free.

Orwell Dev-C

The official site of the Bloodshed Dev-C++ update, which is fully portable, and optionally ships with a 64bit compiler.

Qt Creator

Qt Creator is a cross-platform C++, JavaScript and QML integrated development environment. It is the fastest, easiest and most fun experience a C++ developer could wish for.

SyncJEdit

A free Java IDE with integreted tools: class hierarchy, add listener automatically, project relationship, view zipped file, add class code, runtime input stream, view class and Java file in class paths, format Java file.