https://atom.io/ I found out about it yesterday and it's miles ahead of Notepad++. You should give it a try if you like to code.
Multi-select and autofill. Multiselect: hold control and highlight multiple areas of text. Then, you can type simultaneously in all selected locations. autofill: start typing something and it will suggest what to type (great for coding and stuff) I looked at that too but it costs $$
nope, its free, it asks for a registration but you are allowed to use it unregistered as long as you like