Ask HN: What types of independent software development have you tried?

[biznerd]

So far I've identified:

Mobile (Android, iPhone) Wordpress plugins Your own web app (SaaS) Gaming (Xbox, PS marketplace)

I'm self taught and I'm thinking WP might be best because competition is less and promotion easier.

Obviously, my own app would be the dream but that is really hard to pull off.

Anyone have any insight?