Very light offline license server Multi-platform for all Jetbrains products without any install as service or setup (just double click).
I had test it with phpStorm 2017.2, it's work perfectly without any internet connection.
License server is on http://0.0.0.0:8080

You can even synchronize data of heterogeneous databases (for example, compare your local SQL Server database with a MySQL replica on your web site - and synchronize all the differences in just a few minutes). Easily replicate database table data - even with heterogeneous databases. Whether you need to simply compare two databases or set up replication, you have come to the right place. Replicator does not change reference database in any way nor requires setting up custom agents or triggers in your databases.

An agent is a little piece of a program that has one job. Agents connect to and turn on and off other agents. An Embrio program is made up of multiple agents running in parallel. Work with a live connection to your Arduino, see how your program works as you build it! When your program is done it can be compiled to run entirely on your Arduino! The profiler tool gives you accurate resource usage information while you work.

Delphi and C++ Builder components for viewing, navigating, text extracting and editing PDF files.

uses PDFium open-source PDF rendering engine
available for D10.2 Tokyo
source code included in registered version
royalty free distribution in applications

IntraWeb supports RAD Studio / Delphi XE2, and in fact is included as a part of RAD Studio / Delphi XE2. If you have RAD Studio / Delphi XE2, you already have IntraWeb XII. RAD Studio 2009, 2010, XE, XE2, XE3, XE4, XE5, XE6, XE7, XE8, 10 Seattle, 10.1 Berlin, Delphi 10.2 Tokyo.

YouTubeApi VCL/FMX 1.4 with Source for Delphi

JustDecompile is available for free download individually, or it can be purchased with priority support as a part of DevCraft - the most comprehensive HTML5 and .NET toolbox. JustDecompile is fast. In fact, really fast. When tested against the leading competitors, for .NET framework decompilation time, JustDecompile came out 10 times faster than the leading commercial decompiler. Try it and verify the results for yourself.

Use OCR.NET component to retrieve text from image, for example from scanned paper document.
uses Tesseract OCR engine and Leptonica image processing library
available for .NET 2 - 4.7
source code included in registered version
royalty free distribution in applications

Xamarin Forms is great if you want to develop apps for different mobile platforms. But when it comes to touch gestures, it is still very limited.
For more than a year they only had the TapGestureRecognizer. Although they did add some others lately, they still don't provide all information which you need. Furthermore the API which they use has been copied from iOS and is not what a .NET developer would expect.

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