Check out https://home-assistant.io
There's a bit of a learning curve to conquer, but there's also a helpful and engaged community, and some good discussions on the support forum.
Discussion about general home automation ideas and projects, home automation protocols like Z-wave, Zigbee, Matter, etc, and home automation software and hubs like HomeSeer, Home Assistant, OpenHAB, Homey.
Check out https://home-assistant.io
There's a bit of a learning curve to conquer, but there's also a helpful and engaged community, and some good discussions on the support forum.
Another recommendation for Home Assistant here. Home Assistant is commonly run on a Raspberry Pi or other low power SBC, but there are variety of install options.
As you have some Ikea Tradfri devices you will also want to get a Zigbee coordinator. Tradfri devices use Zigbee to communicate, and with Home Assistant and a Zigbee coordinator you can stop using the Ikea hub and control the devices directly with Home Assistant.
Good options for Zigbee coordinators include Home Assistant SkyConnect, SONOFF ZBDongle-P and Phoscon ConBee II.