Here is list:

C++
QT – http://www.trolltech.com is good one and cross-platform coding
tool. It can use GNU c++ and other platform specific complieÂÂ*rs like
MSVC or Borland C++. And it is free for open source softwareÂÂ*syou're
you are involved in closed source commercial software than fÂÂ*ollow
license guideline at above site. I like QT and I used it lotÂÂ*. It
supports MySQL, ODBC and other databases.


Kdevelop - http://www.kdevelop.org/ an easy to use IDE (Integrated Development Environment) for KDE, it support many languages including c,c++, etc

Kylix - http://www.borland.com/kylix/ is C++ and Delphi language
programming and support DB2 and other databases. It is a comÂÂ*mercial
product. Also works on both Windows and Linux.


Basic like
Gambas http://gambas.sourceforge.net/ is a new kid and it is a free
development environment based on a Basic interpreter with obÂÂ*ject
extensions, like Visual Basic

HBasic HBasic http://hbasic.sourceforge.net/ is an integrated
development environment used to create, execute and debug prÂÂ*ograms
with an BASIC style language.

Hope this helps