Any great way to create and share a GUI with developers?

Does anyone know a great tool to share a GUI with developers (online perhaps)?

I'm working on a SaaS-system on my PC (Nope, i can't change it for a mac - therefore extensions for Sketch isn't a possibility). The system i'm working on i getting quite complicated, and we're talking about a massive designupdate. For that, i'm in need of a tool that can help me build a GUI, so i don't have to create titles and descriptions, type values etc. in Photoshop (I'm currently working in Photoshop however - i'm looking into Adobe XD. Experiences anyone?)

So - what i'm hoping, is to find a tool where i can build a GUI instead of doing it manually in Photoshop, and have the ability to see and share CSS with my developers.

How are you guys sharing your graphics with your team?