The following humane organizations support TNR (Trap-Neuter-Return), and provide advice and resources for managing feral cat colonies:
Gotham City Kitties (Local, NYC Resource--Rescues & Adoptions)
http://www.gothamcitykitties.org/
All About Spay Neuter (Local, NYC Resource)
http://www.allaboutspayneuter.com/index.html
Please note that WaHi Cats is not a shelter or a friendly cat placement organization. Our primary mission is TNR (trap-neuter-return) of feral cats. While we occasionally find and rescue adoptable cats and kittens during the course of TNR projects, we cannot assist individuals seeking homes for current housepets. If you are seeking help with surrendering your own pet, or dealing with a friendly stray cat in your neighborhood, or helping an adoptable injured cat, please click the link below to find a list of rescue and shelter organizations in your area that may be able to help you.
No-Kill Shelters and Animal Organizations in New York City, arranged by Borough: