Hello, is the self hosted version of SigNoz free of charge? and does it comes with all the features - or do I still need to enter a subscription key of some sort?

Yes, self-hosted SigNoz is free of cost. For enterprise features, you will need subscription key. Reach out to @Ankit Nayan or @Pranay if interested to know more.

thanks for the reply, where can I find a full comparison with basic and enterprise features please ?