Here are some websites or initiatives that are somewhat similar to BR:
W.indebate is a website for women in debate, primarily for LD; they run a blog and a mentor program!
Not Debatable is for debaters fighting ableism in debate; they have a mentor program, and a blog, as well as a discord group!
Girls Debate is a website for girls in debate that has a blog and some educational resources like card packs!
The Women’s Debate Institute (WDI) is a summer debate camp for womxn in Policy debate.
The Public Forum Gender Empowerment Facebook Group celebrates womxn in outrounds of national circuit tournaments and is a resource to share information about different projects or initiatives relating to gender issues in PF!