The Free Pascal Runtime Library, abbreviated RTL, is Free Pascal's runtime library.
The RTL consists of a collection of units that provide components and classes for general programming tasks. It acts as a basis for Free Pascal's Free Component Library (FCL) and the Lazarus Component Library (LCL). The RTL is licensed under the LGPL with a static linking exception.
The GNU Compiler Collection (GCC) is a compiler system produced by the GNU Project supporting various programming languages. GCC is a key component of the GNU toolchain and the standard compiler for most projects related to GNU and Linux, including the Linux kernel. The Free Software Foundation (FSF) distributes GCC under the GNU General Public License. GCC has played an important role in the growth of free software, as both a tool and an example.
Pascal is an imperative and procedural programming language, designed by Niklaus Wirth as a small, efficient language intended to encourage good programming practices using structured programming and data structuring. It is named in honour of the French mathematician, philosopher and physicist Blaise Pascal.
The Visual Component Library (VCL) is a visual component-based object-oriented framework for developing the user interface of Microsoft Windows applications. It is written in Object Pascal.
In computer science, reflection is the ability of a process to examine, introspect, and modify its own structure and behavior.
Delphi is a technology that uses the Object Pascal programming language and an integrated development environment (IDE) for rapid application development of desktop, mobile, web, and console software, currently developed and maintained by Embarcadero Technologies.
Component Pascal is a programming language in the tradition of Niklaus Wirth's Pascal, Modula-2, Oberon and Oberon-2. It bears the name of the Pascal programming language and it preserves its heritage, but it is not compatible with Pascal. Instead, it is a minor variant and refinement of Oberon-2 with a more expressive type system and built-in string support. Component Pascal was originally designed and supported by a small ETH Zürich spin-off company called Oberon microsystems under the name Oberon/L. They developed an IDE called BlackBox Component Builder. Since 2014 development and support has been taken over by a small group of volunteers. At the time the first version of the IDE was released it presented a novel approach to graphical user interface (GUI) construction based on editable forms, where fields and command buttons are linked to exported variables and executable procedures. This approach bears some similarity to the code-behind way used in Microsoft's .NET 3.0 to access code in XAML, which was released in 2008.
Free Pascal Compiler (FPC) is a compiler for the closely related programming-language dialects Pascal and Object Pascal. It is free software released under the GNU General Public License, with exception clauses that allow static linking against its runtime libraries and packages for any purpose in combination with any other software license.
Lazarus is a free cross-platform visual integrated development environment (IDE) for rapid application development (RAD) using the Free Pascal compiler. Its goal is to provide an easy-to-use development environment for programmers developing with the Pascal Object language, which is as close as possible to Delphi.
The Native API is a lightweight application programming interface (API) used by Windows NT and user mode applications. This API is used in the early stages of Windows NT startup process, when other components and APIs are still unavailable. Therefore, a few Windows components, such as the Client/Server Runtime Subsystem (CSRSS), are implemented using the Native API. The Native API is also used by subroutines such as those in kernel32.dll that implement the Windows API, the API based on which most of the Windows components are created.
The Microsoft Windows operating system supports a form of shared libraries known as "dynamic-link libraries", which are code libraries that can be used by multiple processes while only one copy is loaded into memory. This article provides an overview of the core libraries that are included with every modern Windows installation, on top of which most Windows applications are built.
fpGUI, the Free Pascal GUI toolkit, is a cross-platform graphical user interface toolkit developed by Graeme Geldenhuys. fpGUI is open source and free software, licensed under a Modified LGPL license. The toolkit has been implemented using the Free Pascal compiler, meaning it is written in the Object Pascal language.
GLScene is a free OpenGL-based library for the Delphi programming language, C++ and Free Pascal. It provides visual components and objects allowing description and rendering of 3D scenes.
Project JEDI is an open source project created in 1997, which started with the goal to translate C headers to Object Pascal and share the results with fellow Delphi programmers. The name decided on was Project JEDI. Over time it evolved to include other aspects of Delphi programming: runtime library (RTL) enhancements, new visual components for the VCL and version control. Today, as a stable code collection, it is one of the largest open source Delphi libraries, and its code is widely used in the Delphi community.
FastCode is an open source programming project aimed at providing enhanced runtime library routines for Embarcadero Delphi and C++ Builder. Since it was started in 2003 by Dennis Kjaer Christensen, it has contributed highly optimised functionality to the 32-bit Delphi runtime library (RTL). FastCode is unique among contributions to commercial compiler runtime libraries for its community-driven and open source nature.
Pascal Script is a scripting language based on the programming language Pascal that facilitates automated runtime control over scriptable applications and server software. It is implemented by a free scripting engine that includes a compiler and an interpreter for byte code.
The Lazarus Component Library, abbreviated LCL is a visual software component library for the Lazarus IDE.
The Free Component Library, abbreviated FCL, is a software component library for Free Pascal.
Widgetsets support platform-sensitive development with the Lazarus IDE. They act as adapter libraries that provide an interface between a platform-inpedentent sourcecode written in Free Pascal and platform-specific system functions. Thus they allow for development of platform-native software without requiring to provide specific source code for different target platforms.
TAChart is a component for the Lazarus IDE that provides charting services. Similar to Tchart and Teechart for Delphi it supports a collection of different chart types including bar charts, pie charts, line charts and point series. Apart from a screen canvas, output is possible in form of SVG, OpenGL, printer, WMF, and other formats.