How can I get back the thin monospace font on EI Capitan with PhpStorm 10?
This is actually a new feature in PhpStorm 10. Open up PhpStorm's preferences and go to [Appearance &amp; Behavior > Appearance]. Under the "Antialiasing" section, change "Editor" to "Greyscale". There are a few other options. Play with it and see what you like.