Use this tag for questions specifically related to ASP.NET Core 3.0, in addition to using the 'ASP.NET Core' tag.

Kohana 3 is a HMVC (Hierarchical Model-View-Controller) PHP framework that places security, scalability and rapid development at its forefront.

A Handler allows you to send and process `Message` and Runnable objects associated with a thread's `MessageQueue`. Each Handler instance is associated with a single thread and that thread's message queue. When you create a new Handler, it is bound to the thread / message queue of the thread that is creating it -- from that point on, it will deliver messages and runnables to that message queue and execute them as they come out of the message queue.

Android's DrawerLayout acts as a top-level container for window content that allows for interactive "drawer" views to be pulled out from the edge of the window.

MahApps.Metro is a toolkit for creating Metro-styled WPF applications. It also includes some custom controls based on concepts from Windows Phone, Windows 8 and Window 10 (UWP) Apps. Furthermore it's an open source and therefore free to use

.dex files are compiled Android application code files.

The use of existing software, or software knowledge, to build new software

This tag is deprecated. Use a tag with the specific effect instead (e.g. spiral-effect).

PDFsharp - A .NET library for processing PDF (create, merge, split, or modify PDF files). For questions related to using the PDFsharp library on any platform and with any programming language.

Use this tag for questions about the Eclipse JDT (Java Development Toolkit) project which provides the plug-ins that implement a Java IDE supporting the development of any Java application, including Eclipse plug-ins.

Apache Sling is a web framework that uses Java Content Repository to store and manage content. It also uses OSGi (Apache Felix) for dynamic loading.