KDevelop 4: fourth beta released

From KDE Dot News:

A fourth beta of KDevelop 4 has been released. KDevelop is an integrated development environment for KDE which can be used with a variety of languages but is particularly suited to KDE development. Major changes:

• Working sets
• Integration of "quick open" into the toolbar
• New perspective switcher

Bug fixes (30 in total) including:

• Closing images & other binaries will no longer cause crash
• Valgrind works again
• Variable view in debugger fixed
• Crash bugs related to parsing and code-completion popups fixed

Source downloads available from KDE mirrors; read this before building it yourself. Requires KDE v4.2; working sets and many other new features require 4.3.