There are many alternatives to Delphi for Windows if you are looking for a replacement. The best open source Windows alternative is Lazarus. If that doesn't suit you, our users have ranked more than 25 alternatives to Delphi and 16 are open source and available for Windows so hopefully you can find a suitable replacement. Other interesting open source Windows alternatives to Delphi are PyCharm, MonoDevelop, KDevelop and Free Pascal.
Lazarus is a cross-platform IDE for the Free Pascal compiler. It tries to offer a Delphi-like programming experience through its own 'Lazarus Component Library' and supporting many platforms like Windows, OSX, Linux, BSD, Android, iOS and more.
Because it supports very simmilar Object Pascal dialect and can convert projects from Embarcadero Delphi to Lazarus projects.
Cross-platform IDE for Python and Django with refactoring capabilities, code completion, VCS integration, deployment, issue tracking, remote debugging, and Community Edition, though lacking database support and web technologies.
MonoDevelop enables developers to write desktop and web applications on Linux, Windows and Mac OS X. It also makes it easy to port .NET applications created with Visual Studio to Linux and Mac OS X maintaining a single code base for all platforms.
Linux support, KDE integration, open source, not Microsoft, not organized crime.
Free Pascal (aka FPK Pascal) is a 32 and 64 bit professional Pascal and Object Pascal compiler. It is available for different processors: Intel x86, Amd64/x86_64, PowerPC, PowerPC64, Sparc, ARM.
Ultimate++, also called U++, is a C++ cross-platform rapid application development framework focused on programmers productivity. It includes a set of libraries (GUI, SQL, etc..), and an integrated development environment.
#develop (short for SharpDevelop) is a free IDE for C#, VB.NET and Boo projects on Microsoft's .NET platform. It is open-source, and you can download both sourcecode and executables.
Jmix provides powerful full stack architecture along with Rapid Application Development tools for easy start and fast development of modern business web applications.
CodeTyphon is a fork/distribution of Lazarus with thousands of Lazarus/Free Pascal components bundled into distribution and with own Lazarus expansion features.
Similar to Lazarus except CodeTyphon has many more of the Delphi expected components.
A cross-platform Software Development Kit including a GUI toolkit, a 2D/3D graphics engine, a networking library, an audio output library, an IDE, a compiler for the eC programming language, and more.
OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
The GNU Pascal Compiler (GPC) is, as the name says, the Pascal compiler of the GNU family
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Lazarus uses pascal language like Delphi and lazarus use many visual component Delphi use, components with the same name and in the same place delphi has it, I'm so glad find here an alternative to this program