Delphi Components

This list is a collection of free and/or open-source Delphi components, if there’s one not in the list you’d like to see in it, don’t hesitate to tell me in a comment.

• JCL (JEDI Code Library) – JCL is a vast library with tons of non-visual Delphi components. It contains components for numerous different purposes.
• JVCL (JEDI Visual Component Library) – JVCL like JCL is a very big library of components from the JEDI project. This library contains visual components such as buttons, edits, labels and much more.
• NativeXml – A very fast and powerful native XML library for Delphi. The library is fully object-oriented.
• Virtual Tree View – A powerful enhanced treeview component for Delphi.
• SpTBXLib – A visual component library with support for themed toolbars and docks.
• Wave Audio – An audio library for playing wave files.
• i18n – A library to internationalize applications.
• JEDI-SDL – A Delphi wrapper for the SDL game engine.
• HTMLViewer – A powerful HTML viewing component.
• DUnit – A Delphi testing framework.
• MidWare – A middleware framework to create application servers.
• tiOPF – An open-source object persistence framework.
• Delphi Collections – A framework containing all sorts of generic Delphi collections.

Networking libraries:

• Indy Project – An advanced free socket library with support for many protocols.
• Synapse – A blocking socket library supporting various protocols.
• Internet Component Suite – A socket library with support for multiple protocols.

Compression libraries:

• ZipMaster – A Delphi wrapper for zip libraries.
• ZLib – A Delphi wrapper for the zlib compression library.

Graphics and 3D libraries:

• Graphics32 – A powerful native graphics library with built-in support for a lot of advanced graphics editing.
• GraphicsEx – A library supporting many different graphics formats.
• GLScene – An OpenGL library for Delphi.

 Script engines:

• Pascal Script – A Pascal based script engine with support for a lot of standard Pascal language features and api calls.
• Sepi – A powerful Pascal based script engine with a lot of features.
• RUTIS – Another Pascal based script engine.
• Delphi Web Script – A Pascal/JavaScript hybrid scripting language with JavaScript export capabilities.
• Lape – A Pascal based script engine compatible with PascalScript.