C++ Builder is not available for Linux but there are some alternatives that runs on Linux with similar functionality. The best Linux alternative is Code::Blocks, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to C++ Builder and five of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to C++ Builder are CodeLite (Free, Open Source), Cevelop (Free), AvalonStudio (Free, Open Source) and MaxBlox (Paid).
Code::Blocks is a free C++ IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable. An IDE with all the features a developer need, having a consistent look, feel and operation across platforms.
MaxBlox is a complete application development platform. The entire system is web-based and allows the ability to build applications that operate over the web. This is architected as a Platform as a Service (PaaS) system.