NetBeansĪdvance and open-source NetBeans offers features like unit testing, semantic highlighting, code assistance and automatic formatting. The compiler comes in a 30-day free trial version but for using it long you have to buy it. Though small C-Free has brilliant features and can be considered as an alternative to the traditional Turbo-C compiler for developing C++, C programs and for supporting many other compilers as well. Digital Mars is convenient to use for its quick link time and efficient compile. It’s free and has both GUI and command-line versions. Alternately download a nightly-build, source code or retrieve source-code from the SVN. Downloading the setup file for the binary release you can run it on the PC.