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.

TurboTax Home & Business - Personal & Self-Employed. We'll tell you which expenses you can deduct such as phone, supplies, utilities, home office and more. Don't miss any tax write-offs–we'll help you spot overlooked tax deductions for your industry. Let us determine if actual expenses or the standard mileage rate will get you the biggest tax deduction.

Keeping track of all the videos, songs and photos stored onto a computer can be a daunting task if the media files are scattered all over the hard drive, so a centralized management solution that can help organize them is welcomed. If that software is also able to provide some basic editing commands, the more appreciated it will be.

The Ultimate video editing software. Edit your media your way with the power, creativity and control of Pinnacle Studio 21 Ultimate video editor - our best just got better! Pinnacle Studio Ultimate delivers the tools you need to create pro-like videos, including premium effects from NewBlue FX. With powerful features like new Morph transitions, Split Screen video, Multi-Camera video editing and more, you can create HD and 4K videos with the controls, filters and precision you need to edit like a pro. Get the controls you need and go beyond what you thought possible with Pinnacle Studio Ultimate!

PDF Annotator lets the user open any PDF file and add annotations, using the mouse or a Tablet PC pen, directly on the PDF file's pages. The annotated documents can then be saved directly back to PDF format. In this way, anyone can read or print the annotated PDF documents. Annotated documents can also be easily attached to emails. Previously, annotating, commenting or proofreading a document received for review in PDF file format was possible only by using multiple software products in a row--or only by printing the document and adding comments manually. With PDF Annotator, annotations can also be added in a natural way--using a pen--but everything remains in digital format. PDF Annotator allows commenting of PDF files in a single step.

Print Conductor is a simple batch printing utility. If you regularly have to open and print a large number of files, this elegant tool can be a real timesaver. Once you tell it which files to print, Print Conductor automates the rest of the process. Print Conductor is easy to use. Create a list of files to be printed. All sorts of formats are supported: Adobe PDF, Microsoft Office (Word, Excel, Visio, PowerPoint, Publisher), Autodesk AutoCAD, HTML, SVG, etc.

MOBILedit Forensic Express is a phone extractor, data analyzer and report generator in one solution. A powerful application using both the physical and logical data acquisition methods, Forensic Express is excellent for its advanced application analyzer, deleted data recovery, wide range of supported phones including most feature phones, fine-tuned reports, concurrent phone processing, and easy-to-use user interface. With the password and PIN breaker you can gain access to locked ADB or iTunes backups with GPU acceleration and multi-threaded operations for maximum speed.

VNC is remote control software which allows you to view and fully interact with one computer desktop (the "VNC server") using a simple program (the "VNC viewer") on another computer desktop anywhere on the Internet. The two computers don't even have to be the same type, so for example you can use VNC to view a Windows Vista desktop at the office on a Linux or Mac computer at home. For ultimate simplicity, there is even a Java viewer, so that any desktop can be controlled remotely from within a browser without having to install software.

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