Docker Desktop is an application for building and running software containers on a personal computer. It is made by Docker Inc, the company behind the open source Docker engine. Docker for Mac and Docker for Windows came out in 2016 and were later merged into Docker Desktop.
A container packages an application with everything it needs to run, so it behaves the same on a laptop and on a server. Docker Desktop installs the Docker engine, the command line tools, Docker Compose and an optional local Kubernetes cluster. A graphical dashboard shows running containers, images and volumes. Developers pull images from Docker Hub, build their own from a Dockerfile and run several services together with Compose. Extensions add tools from other vendors.
Docker Desktop is free for personal use, education, open source projects and small businesses. Since 2021, companies with more than 250 employees or more than 10 million US dollars in yearly revenue need a paid Docker subscription to use it. It runs on Windows, Mac and Linux. It is one of the most common tools in the daily setup of backend and DevOps developers.