Lazarus

What Lazarus is

Lazarus is a free, Delphi-compatible, cross-platform IDE for Free Pascal and rapid application development. It runs on Windows, macOS and Linux, with the project also listing BSD and Raspberry Pi support. The environment combines a code editor with syntax highlighting, code completion and refactoring tools, plus an integrated build system, debugger and testing tools. A drag-and-drop graphical form designer works alongside code, while the LCL supports designing forms for multiple platforms. Projects can be copied to another platform and compiled there. Downloads include builds for Windows, Linux and macOS, along with source archives. Lazarus can be extended through its package system with database, reporting, charting and networking libraries. The IDE uses the GPL license, while core libraries use LGPL with additional linking permission; extra packages may have different licenses. Native binaries can be built without runtime dependencies, although Linux and BSD applications may need GTK2 or QT, and add-ons can introduce dependencies. The project began in February 1999.