For any programmer a compiler/interpreter and IDE is necesary.If you are Looking for free c/c++ compiler/interpreter then your search is over,here i have listed some of free,easy to use C and C++ compilers, cross-compilers and interpreters.
In Next article i’ll list IDE’s for C/C++ and java or multi-language ones.
 Turbo C++ Explorer
Borland continues its turbo edition of the product with Turbo explorer.You can develop c/c++ applications for windows using the Borland Turbo C++ compiler and IDE. The package boasts of integrated compilers, RAD visual designers, rich debugging features, Code Insight, templates, a history manager, a database explorer and connectivity, included Borland InterBase and MSDE, support for DCOM, ActiveX, .NET remoting, many pre-built components, etc.
If you are looking for earlier version of Turbo C++ then try google or even orkut/esnips.
Cost: Free (Requires registration on website to obtain activation key)
Platform: Windows only
 Dev-C++ Compiler
Dev-c++ also known as bloodshed.Currently in it’s 5th version.It’s packed up with Mingw32,egcs and installer to pack your applications and distribute it.It has editor and other facilities to make program development using the Mingw32 gcc compiler easier on a Windows platform.
Cost: Free (open source)
Djgpp is one of the famous gnu/c/c++ compiler to date.It is 32-bit based ompiler.Includes editor,lexical analyser,parser generator,make and lot more.YOu can even get the source code for entire djgpp compiler,library and utilities.
 Open Watcom
Open watcom is open source version of the famous,old watcom compiler.Compiler can be used in 16 bit and 32 bit protected mode for win32,dos and OS/2, Netware NLM as well.It also maintains the STL port.Site for openwatcom alsomaintains wikiand forums for user queries and support.
Cost: Free [Opensource]
 Sun Studio
Sun microsystems has free compilers and utilities for programmers who wish to join the sun developer network.it has C/C++,fortran compiler.Of course these tools are cross platform.These tools are alsocomatible with gcc,visual express and C99, OpenMP, and Fortran 2003.
 Digital Mars
Digital mars is also high rated compiler that compiles for Win32, Win16, DOS32 and DOS.It offers lot of features to users that includes command line and GUI versions,tutorials, sample code, online updates, and disassembler, librarian, resource compiler and lot more.
Platform: Windows /?
GNU compiler collection is also very famous compiler collection. It is open source & there are various libraries , ports writtent on for the GCC.
Cost: Free/Open Source/GPL
Platform: Windows /Linux/Unix/Apple (Cross-Platform)
My hope is that this information will prove beneficial to the readers. Any feedback is welcome. Thank you.