Yes, if your question is about something that runs on Ubuntu, Ubuntu configuration, or basically anything else about Ubuntu, it is on-topic here. Unless it is about an EOL release, then it isn't on-topic here, or necessarily, anywhere. Although questions on software recommendations and windows replacement software might get better results on: Software Recommendations
For more information on things which are on-topic here please read: https://askubuntu.com/help/on-topic
