After being asked to use Visual Studio 2015 for F#{.tweet-hashtag} Development, I decided it’s way more lightweight to to develop it on my Mac using Sublime Text 3. Software you need installed: Install Mono on your Mac Of course Sublime Text 3 And the best package manager for Sublime, Package Control. Install (using package control) these packages with package control in Sublime Text: F# – Gives you syntax Highlighting F-Sharp – Autocomplete, tooltips, definitions, etc.