Software has been the hot market for the past 5 years. I think this is cooling at the moment.
The space has essentially zero barrier to entry and so it’s become very commoditised.
No sure if you have any moral objections but with the Ukraine conflict and general global tensions, sellers in the capital military equipment are making insane money.
Other than that, medical devices can be high deal size, require face-to-face meetings to secure deals and are an interesting market to work in.