DelphiWorlds/Kastri

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).

Delphi cross platform socket library

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.

Skia4Delphi is a cross-platform 2D graphics API for Delphi platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

API to consume REST services written in any programming language with support to Lazarus and Delphi

CEF4Delphi is an open source project to embed Chromium-based browsers in applications made with Delphi or Lazarus/FPC for Windows, Linux and MacOS.

DMVCFramework (for short) is a popular and powerful framework for Web API and Web Applications in Delphi. Supports RESTful and JSON-RPC WEB APIs development.

The Ultimate OpenSource RTL / ToolBox for Delphi and FreePascal

Dependency Manager for Delphi and Lazarus