Software

This is a short list of software I've written. See github.com or baraverkstad.se for a more exhaustive list.

Web Development

RapidContext (2007–ongoing) is a platform for building and hosting web applications. Created some years before Node, its Java server connects to data sources, manages security and embeds a JavaScript engine.
Mixed Encoding (2011–ongoing) is an online tool that encodes, decodes, escapes or unescapes a number of text and data formats, such as Base64, hexadecimal, JSON, XML and more.
Console Learner (2013–ongoing) is an interactive course in JavaScript (or ECMAScript if you will). It features an interactive console right on the page.

Grammatica (2003–2016) is an open-source C# and Java parser generator (compiler compiler). It improved usability and error handling compared with similar tools at the time.
Mibble (2003–ongoing) is an open-source SNMP MIB (or SMI) parser library for Java. It reads MIB files (in ASN.1 syntax) and provides an API to access all the information.

Upstate (2013–ongoing) prints a summary of machine and process status that is actually readable. Or machine-readable in JSON format.
Mixtape Backup (2017–ongoing) is a set of command-line tools for backing up a Linux server. It automatically deduplicates and compresses files upon backup, making the backup process fast and space-efficient.

Tetris (1994) is a Java applet created while learning Java. It is available as free software, but won't run in modern browsers without a Java applet plugin.