30,057 projects in the catalog.
Free Pascal, Lazarus and Delphi components, libraries and programs from GitHub, SourceForge, Codeberg, GitLab and more. Rate them, mark what looks interesting, and talk about them on their benches.
Foreval is parser, compiler and evaluator of mathematical expressions in run-time with support complex numbers. After parsing and building tree of expression is perform optimization and compiling into x86-32 instructions and returns address of compiled expression. For expressions can by finding derivatives by symbolic or numerical differentiation.
An expression parser and a virtual machine. A formula is compiled to a flat byte array and evaluated by a linear pass over it, with no allocation on the path of an ordinary formula. On x86-64 an optional accelerator compiles that bytecode to machine code and hands anything it declines back to the interpreter, so an answer is never fast but wrong. Results are cached by shape: once 2 + 3 has been compiled, 5 + 7 reuses the same script and only writes the numbers into a copy. 163 functions to call and 249 names in the table, your own functions and variables bound by address, symbolic differentiation. The Lazarus parser packages require FCL and define NOFORMS and NOGRAPHICS, so they install without LCL. WebAssembly uses a separate console configuration. Two units ask for more at their defaults, Thread through Application.HandleException and BlobManager through TGraphic; drop the defines and add the LCL to the package if you want them.
Language Tools In the Online Package Manager
Evaluate algebraic expression (can define variables x, y and z) and plot functions, parametric and polar equations. Written in Turbo Delphi, based on TExpressionParser.
A freepascal (https://www.freepascal.org) library to evaluate expressions or simple scripts
NppCalc - plugin for evaluates the expressions in the Notepad++ NppCalc used to work with math, trigonometry, statistics, combinatorics, arrays, sets, bits, strings, dates, color, image, measurement, file and folder, RS-232, TCP/IP, encoding, encryption, hashing, compression, etc, Over 400 functions. Q: How does this work? A: Just type function name and press Enter!
Quick development library (AutoMapper, LinQ, IOC Dependency Injection, MemoryCache, Scheduled tasks, Json and Yml Config and Options pattern, Serializers, etc) with crossplatform support for Delphi/Firemonkey (Windows,Linux,OSX/IOS/Android) and freepascal (Windows/Linux).
CPU 6502 Pascal Compiler/IDE/Debugger
Compilador en Pascal para microcontroladores PIC / Pascal compiler for PIC microcontrollers
A native JavaScript (ECMAScript 5.1) parser and interpreter written in Delphi/Object Pascal. Execute JavaScript code directly from your Delphi applications.
A debugger for delphi in visual studio code, and also a MCP server to give claude/copilot/etc authonomous delphi debugging capabilities
A library with some useful utilities for your Delphi Apps.
Advanced expressions evaluator for Delphi, extendable with custom functions and variables
A Pine Script interpreter written in Delphi and Free Pascal, designed to execute scripts and return results as JSON.
Bitgrid - a new model of computation
A sandbox-first JavaScript engine for AI agents: host-set capabilities and limits, deterministic runs, TypeScript annotations, test262 on every pull request.
Delphi-native, MIT-licensed RAG + linter for Delphi/Pascal source code. Symbol-exact + fuzzy + tree-sitter lint. Pure Delphi at runtime.
Tiger is a Delphi-hosted compiler infrastructure that lets you generate native x86-64 binaries for Windows and Linux — executables, shared libraries, static libraries, and object files — entirely from code. There is no source language to parse. Instead, you construct programs using a fluent Delphi API: define types, declare functions.
Delphi Expression Evaluator
maxCron: Flexible, lightweight CRON compliant scheduler written in Delphi.
Simple, but flexible expression parser for Delphi. Forked from JvExprParser.
Pascal Framework is a foundational library for Free Pascal, Lazarus and Delphi applications.
Delphi Uses Analyzer - analyze unit dependencies, cycles etc.
Helpful and useful Delphi Routines as Single Pas Files
A simple Prolog II interpreter written in Pascal
VeloxUI — High-velocity, zero-dependency Object Pascal (Delphi VCL & Lazarus/Free Pascal LCL) desktop MVVM & Windows 11 Fluent UI micro-framework: DWM Mica, undocumented uxtheme dark scrollbars, GDI+ vector cards, High-DPI control fixers, flicker-free generic OwnerData virtual grids, and NT Kernel helpers.
Source code for PPM MCP tools — Pascal/Delphi MCP servers for Claude Code
A lightweight open-source unit-aware math and physics scripting engine for FreePascal and Lazarus
Simple Expression Evaluator
A typed formula and business-rule engine for Delphi, with validation, traceable execution, and portable JSON rule packages.
Bring Anthropic's MCP to Lazarus IDE. Let AI assistants natively code, refactor, debug, and design forms in Object Pascal.
a non visual delphi component that can evaluate mathematical functions defined by the user on runtime.
object pascal AST parser
GPT Transformer developed in Delphi 13
FatExpression is python class used for calculating text-presented expressions
Manages the clipboard and provides handy tools
An independent, open-source LibreOffice Calc and Microsoft Excel extension for evaluating mathematical and unit-aware expressions. Powered by the RunFormula scripting engine.
Easily use JSON in Delphi applications as a custom variant
A prototype Lilypond to MEI-XML converter, written in Object Pascal
Pax is a Pascal/Oberon-inspired systems language that compiles to modern C++23 using Zig’s Clang toolchain, with a pass-through design that lets you mix raw C++ and Pax code freely in the same source file.
Arbitrary-precision integers, decimals and rationals for Unleashed Pascal: signed BigInt, unsigned UBigInt, BigDecimal and BigRational in one dependency-free unit, typically within 1-4x of GMP.
pascal validation suite 5.7
Doom 3 (id Tech 4) levels, materials, md5 models and sounds rendered and played with Castle Game Engine (Object Pascal)
My solutions to Codewars challenges, programmed in Pascal.
Jack Crenshaw's 'Let's Build a Compiler!' tutorial implemented in Free Pascal — v1 (Ch 1-10, 68k asm) and v2 (Ch 11-16, TINY 2.1 + stack VM)
DelphiAI - MCP for the Delphi IDE
lispa, aka "LFP" or "Lisp Flavored Pascal"; is a fast, and embeddable scripting lisp that is fundamentally pascal with lisp syntax. Inspired from LFE (Lisp Flavored Erlang)
Mathemetical Evaluator Unit written in Turbo Pascal.
PhosphorIDE - a Lazarus/LCL editor for Phosphor BASIC. Edits, checks, compiles and runs .bas by spawning the phosphor host as a child process, never linking it. Windows + Linux, MIT.
A mathematical syntax tree evaluation library for mathematical and logical program expressions. Encode expressions and programs into a tree for use in Genetic Programming.
Units of Measurement Debugging for FreePascal
Babel for modern Pascal
Spherical Harmonics Library for Delphi
A command-line evaluator for mathematical expressions
Myra is a statically-typed, compiled language in the Pascal/Oberon tradition. It transpiles to C++23 and uses Zig as a build backend, producing real x86-64 executables and libraries for Windows and Linux. The backend is invisible. You write Myra. You get binaries. Myra - Pascal. Refined.
