EiffelStudio is a full-featured IDE for the Eiffel programming language.

Features
Complete compiler for the Eiffel programming language, with both high compile-time speed and high-performance executables
Support for Windows, MacOS X, Linux, *BSD, Solaris and other operating systems
Smart code editor
Sophisticated multi-view browsing and viewing facilities
Interactive debugger
Graphical modelling tool for UML and BON with full roundtrip
Refactoring support
GUI development tool and fully portable GUI library
The Eiffel compiler creates C code that is then handed to a standard C compiler. As a result, Eiffel programs have a run-time performance comparable to those directly written in C or C++. At the same time, Eiffel is an object-oriented and strongly typed language. EiffelStudio uses a highly efficient compacting garbage collector to free the developer from the burden of memory management.

What's New
New features
studio: Added support for new version of EiffelBase which is void-safe for ARRAY and SPECIAL. Because they are breaking changes, this is only available when starting the compiler or EiffelStudio in experimental mode (ec -experiment or estudio -experiment).

Improvements
studio: the WEL new project wizard will now freeze the code to avoid issue with user having to freeze the code for the inclusion of the Windows resources.
iphone: Extended the iPhone library. One can now create a full blown application, but not yet handle the touch event.
runtime: When handling a mismatch instead of generating the _REF classes for basic types, we generate directly an instance of the basic type so that one can do an object test on the basic type directly.
runtime: Improved compatibility of storables between void-safe and non-void-safe systems so that a non-void-safe system can retrieve a storable created by a void-safe system by ignoring all the attachement marks.

Bug fixes
runtime: Fixed eweasel test#melt091 where the interpreter would crash if creating a manifest string, a once manifest string or an agent if the STRING or ROUTINE class got melted as part of a recompilation.
vision2: Fixed bug#15507 where the vision2 demo was looking at the wrong place for the bitmaps.
net: Fixed a memory leak in read and receive from SOCKET because we forgot to free the temporary buffer used to hold the data.

User changes
base: Added in the non-void-safe version of EiffelBase a few routines that makes it possible to have code that compile both against the non-void-safe as well as the void-safe version of EiffelBase.