.NET component for accessing Windows I/O and memory-mapped ports.

access to I/O and memory-mapped ports on 32 and 64-bit Windows
PnP device drivers built using Microsoft KMDF WDK framework
easy of use, component is fully autoconfigurable
block data transfer enables high speed data transfer
DirectAccess mode provides the fastest access to I/O ports (32-bit Windows only)
available for .NET 2 - 4.7
royalty free distribution in applications

OneDrive Delphi component is a non-visual component that allows to work with Microsoft OneDrive. The component supports Delphi XE and newer Delphi versions and works directly with OneDrive using official API.

TMS RemoteDB allows you to create database applications that perform SQL operations on a remote http server, instead of a database server, using a TDataset descendant. This makes it easy to convert existing Delphi client-server applications into 3-tier applications with minimal changes in source code.

ActiveGanttCSN is a Gantt Chart / Scheduler Windows Forms control that you can use to add advanced Gantt chart or scheduling capabilities to your .NET Windows Forms application. Add Gantt chart and scheduling capabilities to your Windows Forms application. ActiveGanttCSN can be used with practically any development environment and .NET language (VB.NET, managed C++, etc.) that supports Windows Forms development. Use ActiveGanttCSN to build Gantt Charts, rosters, equipment/location rental, TV/Movie scheduling, and many other applications.

Clever Internet Suite VCL represents 100% Delphi VCL components for Delphi / C++Builder, with no external dependencies. RAD Studio XE8, Windows 98, XP, Windows 7 and Windows 8 & 10 support (Win32 and x64 platforms). In the new version 8.1 we have implemented a set of new components, added new features and fixed existing problems. Starting from version 8.0 the library is splitted on design-time and run-time packages. This allows you to use the components in RAD Studio VCL form designer for both 32-bit and 64-bit application platforms. The socket components structure was changed in order to implement new SSH (Secure Shell) encryption. New properties and methods have been added. Some existing properties, methods and events have been renamed or deleted in order to achieve better usability and clear Clever Internet Suite structure.

ZylGMaps is a Delphi & C++Builder component which displays Google maps inside your applications. The demo version is fully functional in Delphi and C++Builder IDE, but it displays a nag dialog (the licensed version will, of course, not have a nag dialog and will not be limited to the IDE). The package includes demo programs for Delphi and C++Builder and a help file with the description of the component.

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.

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.

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.