Bungie confirmed that Xur will be back in Destiny 2 on September 15, 2017! Until then, if you are looking for Xur on legacy Destiny 1 just scroll down.
Sincerely,
Your bummed buddies at Where is Xur 🙁
Xur location for Destiny 1: The Reef

What is Xur Selling?
Legacy Engram | Leg Armor Engram | 29 SC | |
An Insurmountable Skullfort | Titan Helmet | 44 Dis // 45 Str | 13 SC |
ATS/8 Tarantella | Hunter Chest Armor | 101 Int | 13 SC |
Sunbreakers | Warlock Gauntlets | 38 Dis // 34 Str | 13 SC |
Dragon’s Breath | Rocket Launcher | 17 SC |
“Bodies come and go but the cells remember and if they forget the Nine remember it for us.” -Xur