Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
CSS Impact - Industry leaders in Financial Systems for Credit Granting, Billing, Payments, Receivables, Contacts, Collections, Legal, Compliance & Revenue Management.
ioBroker - flexible and modular application for the IoT and Smarthome
Debtrak - Debtrak is an international, multi-lingual, multi-currency Debt Collection Software System designed to cater for the entire debt lifecycle from the point of invoice generation through to settlement.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
TrioSoft Quantum - Quantum, a full featured debt collection agency software suite, Quantum has been designed with the debt collector's needs in mind.