Ask HN: How to help get more women in tech as a male?

There's been a groundswell over the past few years of organizations dedicated to helping get more women into tech, along with other STEM fields. Usually, though, these organizations are for women BY women. As a male, it feels like it would be considered white knighting, or condescending, to try and offer help to these organizations, or to attempt to start something on my own.

I'm looking for your thoughts on what I can actually do to help this movement. Any real-world experience would be greatly appreciated.