www.sublimetext.com
A shareware code editor with incredibly robust scripting and an amazing ecosystem of plugins.
Pretty sure everything is indie on itch.io but just in case you want something extra indie.
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For that old school look and feel.
Explore games made with Sublime Text tagged Indie and Retro on itch.io · Sell your games made with Sublime Text on itch.io to have them show up here.
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