These are some of the open-source tools/libraries I maintain:

• Layered schemas - Semantic interoperability for data capture, processing, exchange https://github.com/cloudprivacylabs/lsa
• Watermelon - infrastructure as real code https://github.com/bserdar/watermelon
• Took - OIDC token manager https://github.com/bserdar/took
• jsonstream - JSON streaming with Go https://github.com/bserdar/jsonstream
• Jcliff - incremental JBoss/Wildfly management https://github.com/bserdar/jcliff
• rrpm - manage rpm packages on remote hosts https://github.com/bserdar/rrpm

I also wrote most of the core components of Lightblue (https://github.com/lightblue-platform), an enterprise datastore.