Delphi Alternatives for Mac OS X

Xcode is Apple's integrated development environment (IDE) for macOS, providing a comprehensive suite of tools for building applications for all Apple platforms, including macOS, iOS, watchOS, and tvOS. It offers powerful features like code completion, debugging tools, and a visual interface builder.

MonoDevelop, now integrated into Xamarin Studio, is a versatile open-source integrated development environment supporting multiple languages and platforms, including C#, F#, .NET, and web development with extensive debugging capabilities.

Lazarus is a powerful, free, and open-source visual IDE for rapid application development with Free Pascal. It provides a Delphi-like experience for creating cross-platform native applications across various operating systems.

PyCharm is a powerful, cross-platform Integrated Development Environment (IDE) specifically designed for Python developers. It offers intelligent coding assistance, a wide range of developer tools, and deep integration with various development workflows, making it ideal for everything from small scripts to large-scale web applications.

CUBA.platform is a high-level open-source Java framework for rapidly building enterprise applications with rich web interfaces and extensive built-in features, significantly accelerating development cycles.

Free Pascal Compiler (FPC) is a robust and versatile compiler for Pascal and Object Pascal, distributed under the GNU GPL. It supports numerous platforms and architectures, enabling developers to create a wide range of applications from console tools to cross-platform GUI applications.