There is another home automation software, which is not as popular as Home Assistant, openHAB (https://www.openhab.org/). openHAB, just like HA, has many integrations, you can have a look on the website. The Github is https://github.com/openhab.

In the company I was working for we were trying to create a building automation software and we were between HA and openHAB. We finally chose openHAB because it is written in Java and we could find easier help from Java developers in-house rather than Python where HA is written.