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GNAT Studio vs Lazarus

Both stand on ide software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

GNAT Studio

Free plan LinuxMacWindows

GNAT Studio brings editing, building, navigation, debugging, version control, and analysis into one free environment. Its strongest fit is software work using AdaCore tools and demanding reliability or safety requirements.

Visit GNAT Studio

Lazarus

Free plan LinuxMacWindows

Pick Lazarus for a free Free Pascal IDE that combines visual form design with editing, building, debugging, and testing. Its cross-platform project support and package system are useful for applications spanning several systems. Review package licensing and possible Linux or BSD dependencies before relying on add-ons or native builds.

Visit Lazarus

The facts

GNAT StudioLazarus
Free planYesYes
Open sourceNot publishedNot published
Runs onLinux, Mac, WindowsLinux, Mac, Windows
Lowest paid planNot publishedFree or on request
Plans publishedNone1
MakerNot publishedNot published
Websiteadacore.comlazarus-ide.org
On ide software#24 of 53#20 of 53

GNAT Studio: what it does well

  • Free desktop IDE for three major operating systems
  • Built-in compiler and make support
  • Integrated gdb debugging views
  • Multiple version-control systems included
  • Python API for plugins and customization

What to know first

  • No mobile development support
  • Project Properties dialog deprecated from version 2026.1
  • Downloads and guidance use GNAT Tracker
  • Focused language support requires customization for others

Lazarus: what it does well

  • Free plan with no trial requirement
  • Runs on Linux, macOS, and Windows
  • Drag-and-drop form designer integrates with code
  • Built-in build system, debugger, and testing tools
  • Projects can be copied and compiled on another platform

What to know first

  • Some extra packages use different licenses
  • Linux and BSD builds may require GTK2 or QT
  • Add-on packages can introduce runtime dependencies
  • No free trial is offered

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