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Petr Pridal reviewedAtomA hackable text editor for the 21st Century
 Recommended
Pros: 

fully customizable, a lot of supported formats, works everywhere

Cons: 

size

I have been using Atom for more than a year. So far the best editor for coding. The only downside is the size and how much RAM it requires to run.

Petr Pridal has used this product for one year.