JSON data format is a standard feature of today's Internet – and a common option for mobile and desktop apps – but many users still regard it as something of a mystery. We'll take a close look at JSON format and some of the free tools you can use for reading and manipulating JSON data.

The Zenity command-line utility lets you create simple dialog boxes with your own data or with the output of utilities and applications.

Obsidian helps you think and work more effectively by giving you a tool to record, connect, and catalog your ideas and related notes.

Control devices from different manufacturers of home automation devices from a single interface by combining free software and a Raspberry Pi.

ELK Stack is a powerful monitoring system known for efficient log management and versatile visualization. This hands-on workshop will help you take your first steps with setting up your own ELK Stack monitoring solution.

You don't need to be a stream processing expert to create useful custom solutions with Apache StreamPipes. We'll use StreamPipes to build a simple app that calculates when the International Space Station will fly overhead.

ExifTool lets you modify and analyze metadata in multimedia files from the command line, but its comprehensive feature set results in a lengthy learning curve. Luckily, jExiftoolGUI offers an intuitive interface that makes using ExifTool easier, even for less experienced users.

With Ventoy you can conveniently put multiple bootable ISO images on a single USB drive.

A lot of COVID-19 data is available through online REST APIs. With a little ingenuity and some open source tools, you can extract and analyze the data yourself.