“As businesses owned by women grow, so, it appears, do their reasons for wanting to do business with other women. Sari Gabay-Rafiy, 33, a New York lawyer, and her partner, Anne-Marie Bowler, 32, left the law firm Proskauer Rose and founded Gabay-Rafiy & Bowler because they wanted autonomy, flexibility and to work on their own terms. They belong to Ladies Who Launch and have advertised on the site.

“There is just something about woman-to-woman legal advice,” Ms. Gabay-Rafiy said. “We’re never condescending. We explain things in plain English. And when I’m on the phone with a client launching a business from her basement who keeps apologizing because a baby is crying in the background, I just get it. I have two kids myself and I know what it’s like.”