The name Gabe is a boy's name . Gabe and discussed in our forums with posts like "Hawthorne Family Generations 1-3".
From the experts:
Gabe ranked in the Top 1000 from 1880 until 1905, when it fell into obscurity. There are fewer than 100 boys named Gabe, just plain Gabe, each year in the US, compared with over 10,000 named Gabriel. Our advice: Go with the crowd and choose the angelic long form, and then call him Gabe if you want to.