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PureParseFloat

Just Good ParseFloat Algorithm named PureParseFloat

awesome-pascal

A curated list of awesome Delphi/FreePascal/(any)Pascal frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff. Open source and freeware only!

Learning and Examples

Alcinoe

Alcinoe empowers developers to build fast, modern apps without the usual complexity or performance bottlenecks. It keeps the focus on innovation—not tool constraints—delivering top performance, deep customization, and great cross-platform UX while staying independent of GAFA ecosystems.

mseide-msegui

MSEide is a Rapid Application Development IDE for platform independent rich GUI applications in the Pascal language. It comes with its own GUI toolkit called MSEgui. Binaries: https://github.com/mse-org/mseide-msegui/releases

ZXing.Delphi

ZXing Barcode Scanning object Pascal Library for Delphi VCL and Delphi Firemonkey

xdpw

XD Pascal: A small embeddable self-hosting Pascal compiler for Windows. Supports Go-style methods and interfaces

MakerAi

The AI Operating System for Delphi. 100% native framework with RAG 2.0, autonomous agents, MCP protocol, and universal LLM connector. Supports OpenAI, Claude, Gemini, Ollama, and more. Delphi 10.4+ (limited), full support from Delphi 12 Athens.

DelphiKB

Delphi reference info

Learning and Examples

pixie

A lightweight HTML/CSS rendering engine for Free Pascal (Lazarus) and Delphi (VCL & FMX).

SQLBuilder4Delphi

Generates Delphi code from your database and lets you build typesafe SQL queries through its fluent API.

DelphiMongoDB

A Delphi driver for MongoDB

JsonToDelphi

generate delphi classes from json (Json To Delphi Class Generator / JSON Data Binding Tool FMX, VCL and uniGUI)

VSoft.YAML

A YAML Parser for Delphi

delphi-visual-studio-code-debugger

A debugger for delphi in visual studio code, and also a MCP server to give claude/copilot/etc authonomous delphi debugging capabilities

DelphiRefactoringLight

This expert for the Delphi IDE brings back some refactoring based on the DelphiLSP

Lazarus IDE plugins

StaticCodeAnalyser

Static code analysis for Delphi 12 & 13 and Lazarus / Free Pascal. RAD Studio IDE plugin (32/64-bit) + standalone GUI + CLI, one engine. 201 rules (Pascal AST + DFM/LFM forms): leaks, SQL injection, dead handlers, hardcoded secrets, Unicode & Trojan Source, Win64 pointer bugs. SARIF for CI/CD, SonarQube push.

delphi-libraries

Pure-Delphi audio codec stack — WAV, FLAC, Vorbis, Opus, MP3. No DLLs, no C bindings. CC0 Public Domain.

csscontrols

Implementation of basic css drawing for pascal (fpc, lazarus, delphi)

GUI containers Graphics

Neslib.MultiPrecision

High-Precision Floating-Point Types for Delphi

toml-delphi

Toml parser and writer for Pascal and Delphi

pascal-pipes-faa

Cross-platform inter-process communication for Delphi 12+ (Win64) and FPC/Lazarus (Linux x86_64/ARM64): the same API at three scopes — local IPC (Named Pipe/UDS), TCP and TLS with optional mTLS. Synchronous Request-Reply, topic pub/sub with wildcards and retain, AutoReconnect and thread-safe dispatch (pool/serialized/main thread).

CachedTexts

The fastest parsing and generation of text data (Delphi6-XE10)

SedaiBasic

SedaiBasic Interpreter with VM

toml-fp

Simplify parsing and writing TOML config files in Free Pascal

PineEngine

A Pine Script interpreter written in Delphi and Free Pascal, designed to execute scripts and return results as JSON.

vsop2013

Astronomy. VSOP2013 planetary positions. PlanetFun App: Solar system model in 3D. LeapFrog Gravity Integration. Stars, Moon and planets. The discovery of Neptune

DX.TOML

Delphi TOML Library

myJSON

JSON parser for delphi 7 and earlier (and maybe even later)

ArgParse

Delphi argparse

tyro

Lua and other programming in simple platform to make programming fun

florialib

Helper library for creating Floria Toolkit

delphi-iot

14 IoT and industrial communication libraries for Delphi 12: MQTT, AMQP 1.0, CoAP, Modbus, STOMP, WebSocket, mDNS/DNS-SD, NMEA, InfluxDB, Prometheus, CBOR, MessagePack, JSON, Serial — 694 tests, no external dependencies beyond Indy

GocciaScript

A sandbox-first JavaScript engine for AI agents: host-set capabilities and limits, deterministic runs, TypeScript annotations, test262 on every pull request.

tina4delphi

Tina4Delphi - A comprehesive set of tools to make REST and application integration better

Delphi-RAG-Lint

Delphi-native, MIT-licensed RAG + linter for Delphi/Pascal source code. Symbol-exact + fuzzy + tree-sitter lint. Pure Delphi at runtime.

Tiger

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.

ExprParser

Simple, but flexible expression parser for Delphi. Forked from JvExprParser.

NativeAsm

Native x86-64 code generation, JIT execution, SIMD, disassembly, and runtime instrumentation for Delphi

PasTemplates

A Go text/template-compatible templating system for Lazarus/FPC

SedaiAudio

Sedai Audio Foundation - Professional audio synthesis library in Free Pascal. 5 Synthesis Engines: Classic/Subtractive, FM (DX7-style), Wavetable, Additive, SID Evo.

dotenv-fp

A feature-rich dotenv library for Free Pascal: load environment variables from .env files with type-safe getters, validation, interpolation, and zero memory management.

Myrissa

Myrissa is a modern systems programming language by Jarrod Davis, combining Pascal readability with robust C ABI interoperability. Written entirely in Delphi, its self-contained compiler generates native x86_64 code for Windows and Linux, with built-in linking, managed strings, unit testing, exception handling, and low-level control.

pas-core-math

Free Pascal based Core Math Implementation

argparser-fp

A lightweight, record-based command-line argument parser for Free Pascal. `ArgParser-FP` is designed for small to medium console applications, offering a clean API to handle arguments with minimal setup.

Express

Fast modern scripting engine for Free Pascal

MathParser

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

tiny-json

JSON library for Delphi

Utils

A general utilities library for Delphi projects

Exact-Float-to-String-Routines

Converts extended number to *exact* decimal representation.

NativeMarkdownViewer

SQLBuilder4Delphi

delphi-lexer

[LIB] Tokenize Delphi source code into a complete, position-aware token stream with full round-trip fidelity and explicit invalid-token handling for parsers, formatters and tooling. Includes TokenCompare, TokenStats, TokenDump utilities along with custom Syntax Highlighter for SynEdit.

IsapiScale

make web server Delphi apps scalable

MojoUnityJson-for-Delphi

MojoUnityJson for Delphi

CssStyledControls

Lazarus CSS styled controls

tidykit-fp

A comprehensive toolkit for Free Pascal that provides an easy-to-use, unified interface for common operations. Inspired by C++'s Boost.

Files and Drives

UnitConv

Converts units of measurement data

VittixDBGridController

Advanced feature-rich VCL DBGrid replacement for Delphi with filtering, grouping, summaries, and multi-format export support

XSD2XMLParser

XSD Schema to XML Parser / Converter for Delphi 2010-XE10.3

fpc-xon