Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
ioBroker - flexible and modular application for the IoT and Smarthome
Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
JabRef - Graphical Java application for managing bibtex (. bib) databases.JabRef · JabRef Help · JabRef | Blog · OpenOffice/LibreOffice .