Splitwise - Splitwise is a free tool for friends and roommates to track bills and other shared expenses, so that everyone gets paid back. On the web, iPhone, and Android!
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
Splittable - Shared living made simple
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
EquiTable - Split the bill fairly
n8n.io - Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.