Justin Deardorff
Justin Deardorff reviewedLunacy Editor 3.0Free Windows app that opens, edits, and stores .sketch files

It works on Windows! Opens sketch files, provides CSS and YAML as well as most basic Sketch functionality. Portable version available. FREE


A bit laggy and keyboard shortcuts are not all the same. It's still in beta though. This will only get better.

This is still in the early stages but I like what I see so far! As a product manager constantly working with designers, I can now open design files on PC for quick screen views, exports, etc. If that's your primary need this will be perfect!! If you are looking for a full featured Sketch replacement, it's not there quite yet.

Justin Deardorff has used this product for one day.
Justin, you know how to motivate! Thank you. Quick update: the next release addresses the shortcuts. The release after will bring speed as we'll start to cache the unaffected objects as the bitmaps.