My Command Button V2 for .NET is the favorite button control for Winform programmers and developers to enhance the User Interface in .NET applications. Over 19 buttons styles like Office 2010, Outlook 2010, Windows 8 METRO, MAC Aqua, Google, Gradient, IE,... All of these can be fully customized easily with colors, special effects on text and image like glow, mirror, fading, shadow.

This all-in-one solution is a comprehensive platform that includes a complete set of tools to build reports under jР°vascript, ASP.NET, ASP.NET MVC, WPF, Silverlight, WinRT, HTML5, Windows Forms, PHP, Java, and Flex. Powerful report engine, interactive, and easy-to-use report designer and viewer are at your service.

ORM framework for Delphi with full support for data manipulation, complex and advanced queries, inheritance, polymorphism, and more...

X-Files Components package contains a full set of advanced visual components designed for Delphi 5, 6, 7, 2005, 2006, 2007, 2009, 2010, XE, XE2, XE3, XE4, XE5, XE6, XE7, XE8, 10 Seattle, 10.1 Berlin and C++Builder 5, 6, 2006, 2007, 2009, 2010, XE, XE2, XE3, XE4, XE5, XE6, XE7, XE8, 10 Seattle, 10.1 Berlin, 10.2 Tokyo.

SQL Server Data Access Components (SDAC) is a library of components that provides native connectivity to SQL Server from Delphi, C++Builder, Lazarus (and Free Pascal) for Windows (both 32-bit and 64-bit) and Mac OS X. SDAC-based applications connect to SQL Server directly through OLE DB, which is a native SQL Server interface. SDAC is designed to help programmers develop faster and cleaner SQL Server database applications.

There are quite a few Delphi open source projects on GitHub that can really save you some time. I searched for Delphi on GitHub and then sorted by the Most Starred projects and came up with this Top 10 list. There is some really good stuff here including Awesome Delphi (which is another top list), Delphi IDE color theming projects, an MVC web framework, a REST API client, Open Source Computer Vision Library headers for Delphi, a really powerful custom TreeView component, a unit testing framework, a component for embedding Chrome in your app, and finally the fantastic OmniThreadLibrary.

Open-source seamless access components for Raspberry Pi breakouts.

Feature overview
The TMS LCL HW Pack for Raspberry Pi contains components that offer seamless access to various breakouts.

Components for viewing, navigating, text extracting and editing PDF files.
uses PDFium open-source PDF rendering engine
available for .NET 2 - 4.7
source code included in registered version
royalty free distribution in applications

Communication protocols 3964 and 3964R for .NET.
available for .NET 2 - 4.7
source code included in registered version
royalty free distribution

.NET NFC library for Android.
uses Android NFC API
provides reading, writing and formatting NFC tags
supports NDEF, NFC-A, NFC-V, MIFARE Classic and MIFARE Ultralight tags
source code included in registered version
royalty free distribution in applications