Comment by britta

You can educate yourself and others! There are lots of resources for learning how to do more, including speaking up to other men and putting some money toward supporting people who are making a difference.

Here's an article with a bunch of options ("What Can Men Do? Men working with other men against patriarchy in technology"): https://medium.com/tech-culture-briefs/a1e93d985af0 - and here's an allies training workshop that you can encourage your company (or your friends' companies) to do: http://adainitiative.org/what-we-do/workshops-and-training/