Channels define Triggers and Actions, the basic building blocks for creating ifttt tasks.
Boxcar
Boxcar
Buffer
Buffer
Buzzfeed
BuzzFeed
Craigslist
Craigslist
Datetime
Date & Time
Diigo
Diigo
Dropbox
Dropbox
Email
Email
Evernote
Evernote
Facebook
Facebook
Feed
Feed
Ffffound
ffffound!
Flickr
Flickr
Foursquare
foursquare
Gmail
Gmail
Google_reader
Google Reader
Google_talk
Google Talk
Ifttt
ifttt
Instagram
Instagram
Instapaper
Instapaper
Linkedin
LinkedIn
Phonecall
Phone Call
Pinboard
Pinboard
Posterous
Posterous
Read_it_later
Read it Later
Sms
SMS
Soundcloud
SoundCloud
Stocks
Stocks
Storify
Storify
Tumblr
tumblr
Vimeo
Vimeo
Weather
Weather
Wordpress
WordPress
Youtube
YouTube
Zootool
Zootool