Quincy!

Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft. It is used to develop computer programs for Microsoft Windows, as well as web sites, web applications and web services. Visual Studio uses Microsoft software development platforms such as Windows API, Windows Forms, Windows Presentation Foundation, Windows Store and Microsoft Silverlight. It can produce both native code and managed code.

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.

Qt Creator is a cross-platform C++, JavaScript and QML integrated development environment which is part of the SDK for the Qt Framework.

Free Pascal is a GPL'ed compiler that runs on Linux, Win32, OS/2, 68K and more. Free Pascal is designed to be able to understand and compile Delphi syntax, which is of course OOP. Lazarus is the part of the missing puzzle that will allow you to develop Delphi like programs in all of the above platforms. Unlike Java which strives to be a write once run anywhere, Lazarus and Free Pascal strives for write once compile anywhere. Since the exact same compiler is available on all of the above platforms it means you don't need to do any recoding to produce identical products for different platforms. »

Xcode is Apple's premiere development environment for Mac OS X. In addition to being packaged on the DVD with every copy of Mac OS X, the latest Xcode developer release is always available for free to ADC members and includes all the tools you need to create, debug, and optimize your applications. At the heart of the Xcode tools package is the Xcode IDE, a graphical workbench that tightly integrates a professional text editor, a robust build system, a debugger, and the powerful GCC compiler capable of targeting Intel and PowerPC regardless of host platform. Xcode is both easy to use, and yet powerful enough to build the largest Mac OS X applications. The complete Mac OS X developer tools chain is distributed as part of Xcode; these tools include Interface Builder, Instruments, Dashcode, the WebObjects framework, and the complete reference documentation, to name just a few. »

CodeLite is an open-source, cross platform IDE for the C/C++/PHP and Node.js programming languages. CodeLite is known to work on various OSs including:

KDevelop is a free, open source IDE (Integrated Development Environment) for Linux, Windows (beta) and macOS (experimental).It is a feature-full, plugin extensible IDE for C/C++, Python, JavaScript and PHP.It is based on KDevPlatform, and the KDE and Qt libraries.

Type intelligentlyWorld-class code completion unlocks the iOS, Android, and OS X APIs. Quickly look up methods and types, and discover API functionality.

Bloodshed Dev-C++ is a full-featured Integrated Development Environment (IDE) for the C/C++ programming language. It uses Mingw port of GCC (GNU Compiler Collection) as it's compiler. Dev-C++ can also be used in combination with Cygwin or any other GCC based compiler.

Code smarter and faster with Komodo IDE, the cross-platform professional development environment for dynamic languages and open technologies. Komodo's award-winning feature set includes standard editor functionality like code formatting, commenting, auto-indent and syntax coloring, plus intelligent tools for debugging, regular expressions, team development and customization.

Free Pascal (aka FPK Pascal) is a 32 and 64 bit professional Pascal compiler. It is available for different processors: Intel x86, Amd64/x86_64, PowerPC, PowerPC64, Sparc, ARM. The following operating systems are supported: Linux, FreeBSD, Haiku, Mac OS X/Darwin, DOS, Win32, Win64, WinCE, OS/2, Netware (libc and classic) and MorphOS.

CodeTyphon is a fork/distribution of Lazarus with thousands of Lazarus/Free Pascal components bundled into distribution and with own Lazarus expansion features.

Anjuta is a versatile Integrated Development Environment (IDE) for C and C++ on GNU/Linux. It has been written for GTK/GNOME and features a number of advanced programming facilities including project management, application wizards, an interactive debugger and a powerful source editor with source browsing and syntax highlighting. Anjuta is an effort to marry the flexibility and power of text-based command-line tools with the ease of use of the GNOME graphical user interface. That is why it has been made as user-friendly as possible. Anjuta is licensed under the GNU GPL. »