Funktion - open source event based lambda programming for kubernetes

Funktion is an open source event driven lambda style programming model on top of Kubernetes. This project provides a command line tool for working with Funktion. It supports hundreds of different trigger endpoint URLs including most network protocols, transports, databases, messaging systems, social networks, cloud services and SaaS offerings.

In a sense funktion is a serverless approach to event driven microservices as you focus on just writing funktions and Kubernetes takes care of the rest. Its not that there's no servers; its more that you as the funktion developer don't have to worry about managing them.