Apps

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YouTube

Tweets on YouTube news, trends, and — of course — videos.
13,330,792 followers |

AddThis

We use big social data to create tools that enable publishers and brands to weave a more personal and social web.
2,935,718 followers |

Amazon MP3

The official Amazon MP3 twitter feed. Follow us to get editor picks, find out about deals on music, and learn more about Amazon Cloud Player.
1,583,888 followers |

Ustream

Official Tweets about the best live events, updates, and news from Ustream.
1,487,301 followers |

foursquare

foursquare helps you explore the world around you. Meet up with friends, discover new places, and save money with Specials! Questions/support: @4sqSupport
425,036 followers |

Zynga

We love social games. Let's play. For Support, follow @ZyngaSupport
330,862 followers |

Spotify

The world's music collection. Play, discover and share for free.
312,797 followers |

Tumblr

Follow the world's creators. Questions? http://tumblr.com/help
270,422 followers |

National Geographic

Follow us for the latest on what's happening at the National Geographic Channel in the U.S. Questions and comments welcome!
220,935 followers |

HubSpot

HubSpot is all-in-one marketing software that brings your whole marketing world together in one powerful, integrated system. Presenters of Inbound Conference.
217,202 followers |

Flickr

Hi and welcome to the official Flickr Twitter page! Flickr is almost certainly the best photo sharing community in the world. Looking forward to see you around!
187,844 followers |

Adobe Photoshop

The official Adobe® Photoshop®. The industry standard in digital imaging and used by professionals worldwide for design, photography, video editing and more.
184,048 followers |

WordPress

Updates and other fun stuff related to WordPress.org (that's the self-hosted version).
174,425 followers |

Foodspotting

Find and recommend dishes, not just restaurants. Visit our site and download our app!
162,104 followers |

myEN (Evernote)

myEN lets you save tweets into your Evernote account. Setup instructions available at twitter.com/myEN. For Evernote info, follow @evernote.
149,003 followers |

evernote

Remember everything with the help of the computers, phones and tablets you use daily.
146,891 followers |

Picnik Photo Editor

Photo Editing Awesomeness
140,460 followers |

CHOW.com

Your home for recipes, restaurant reviews, videos, and cooking how-to on the web.
123,353 followers |

Square, Inc.

Accept payments. Everywhere.
95,642 followers |

AppAdvice.com

The best source for iOS news and reviews.
85,880 followers |

blurbinc

Blurb® helps you tell and share your stories: in bookstore-quality books, on the web, and with your mobile. Your genius, our tools.
82,214 followers |

Causes

We're hiring! Join us and help anyone change the world.
76,415 followers |

37signals

News on 37signals products and more.
76,037 followers |

Vimeo

The official Twitter account of the official best video platform on Earth. Follow us for news and an infinite supply of amazing videos.
70,981 followers |

hulu

Hulu's official Twitter account, offering you hit TV shows, feature films, and clips anytime in the US. For Hulu Customer Support, meet us over @hulu_support.
70,287 followers |

comScore, Inc.

comScore is a global leader in measuring the digital world and preferred source of digital business analytics.
67,780 followers |

SlideShare

The world's largest community for sharing presentations online.
63,853 followers |

Listorious

Making it easy to find who matters on any topic with the best Twitter people search on the web
63,413 followers |

Google Docs

News, tips and tricks from the Google Docs team. Need help? Head on over to our Help Center or forum.
61,866 followers |

Buffer

Buffer is a smarter way to share Twitter and Facebook posts. Follow us, it's @joelgascoigne, @LeoWid & @tommoor tweeting great Twitter tips every day for you.
56,900 followers |

Photobucket

Dumping a bucket of tweets about news, photos and fun stuff from Photobucket
53,677 followers |

boxee

A lot of your favorite shows and movies are already available on the Internet. Boxee finds them and puts them on your TV. The best part? There's no monthly fee.
42,084 followers |

bitly

Save, share & discover links across the web with bitly.
35,801 followers |

Gowalla

Go Out With Gowalla
35,471 followers |

birchbox

beauty 2.0. adventures in the world of makeup and skincare, tech and new media.
35,010 followers |

Gist

Connected People Change History. All your contacts in one place updated with the latest news everywhere you need it.
34,394 followers |

Scribd

Scribd. \skribbed\ the world’s largest social reading and publishing company.
32,441 followers |

PeopleBrowsr

Social analytics for marketers. We created Kred! @priscillascala, @entroporium, @joshuanah and the team do the tweeting.
30,611 followers |

Buddy Media

Buddy Media is the social enterprise solution of choice for the world's largest brands & agencies. Here, @joeciarallo & team posts social & marketing news.
25,184 followers |

Rackspace Hosting

Fanatical Support™. Have questions? Need help? E-mail help@rackspace.com or call us toll-free or internationally: http://bit.ly/D0Zcv
23,085 followers |

The Springpad Team

Share and discover with the people you trust. Need help, ideas or inspiration? Get in touch!
16,343 followers |

Widgetbox

Mobile web apps, web widgets, and rich media advertising powered by the Widgetbox Engagement Platform.
15,260 followers |

hunch

Hunch makes great recommendations by learning your tastes
14,856 followers |

FreeAPPAlert

Follow to see the best paid iPhone apps that are free for a limited time. See all on the website.
14,440 followers |

MakerBot

MakerBot is an affordable open source robot that helps people make things.
13,606 followers |

Shazam

Discover, explore and share more music, TV shows and brands you love. Experience more.
11,910 followers |

Awareness, Inc.

Dedicated to providing social media marketing news and best practices. Powered by Awareness, Inc and the Social Marketing Hub.
10,351 followers |

Scoville

Scoville is your playground to remember, share and discover places you love.
9,786 followers |

Meebo

Meebo organizes the web around people to make it simple to find & share things online.
9,720 followers |

Twittorati

9,717 followers |

AP Mobile

For all the news and behind-the-scenes info about The Associated Press, follow the @AP account on any device.
9,446 followers |

Howcast

Official feed from the company behind the best how-to videos on the web and beyond.
9,118 followers |

Get Satisfaction

We're in the business of building the best customer communities. Our team is available to answer questions M-F, 9-5pm PT. Also find us @GSFNStatus
8,672 followers |

Mindjet

46 of BusinessWeek’s 50 “World’s Most Innovative Companies” rely on Mindjet for the big picture - connect vision to action – See how. http://bit.ly/w359lC
8,064 followers |

Skitch

Skitch It Now! Got a support question? Please visit http://support.evernote.com thanks!
7,517 followers |

Offermatic, Inc.

Offermatic matches offers and deals to you based on where you shop. Offers are loaded onto your credit/debit cards so saving is automatic!
7,492 followers |

Brightkite

The next generation of text messaging. Free. Groups. Photos. Places. For Everyone.
7,378 followers |

UserVoice

Simple customer tools that help you do more customer support and get more feedback in less time. Because you don’t need more buttons to press.
6,483 followers |

SoundTracking

Share the soundtrack to your life! Follow us for app updates, new features, music events, and community news! For questions or support tweet us at @SDTKhelp
6,424 followers |

VivaKi

6,285 followers |

Involver

Involver is the web's most trusted social marketing platform. We support more brands & agencies than any other platform! Learn more at Involver.com.
6,224 followers |

BaubleBar

BaubleBar is your source for the latest jewelry styles, direct from designers.
6,215 followers |

Apture

Apture gives users the power to search and explore rich content without leaving the page. Install instantly, free for publishers and users.
6,197 followers |

YouSendIt

YouSendIt is the 1st cloud collaboration service to offer an integrated approach for sending, sharing and signing docs online.
6,112 followers |

Geni

We love genealogy. Geni.com Everyone's Related- the best way to find and connect with your family! Let's continue building the World's Largest Family Tree!
5,965 followers |

WiseStamp Email Apps

Create Email Signatures that STAND OUT! Twitter, Facebook, eBay & Social Profiles Gmail,Yahoo mail..Use Multi html Sigs Get WiseStamp Firefox & Chrome Addon
5,851 followers |

docstoc

Docstoc is the premier online community and marketplace to find and share professional documents.
5,651 followers |

Aviary

Powering the world's creativity with our suite of online apps and our awesome API!
5,369 followers |

awe.sm

Share. Track. Learn.
5,087 followers |

Dopplr

i'm just a bot. if you want to hear about new developments on dopplr, follow @dopplrhq
4,553 followers |

Intuit GoPayment

Never miss a sale! Take credit cards right on your phone or tablet. Visit gopayment.com to get your free card reader.
4,084 followers |

clickabit

Trending links from bit.ly, hand-clicked for your enjoyment.
3,939 followers |

Sprout

Sprout is mobile rich media’s best friend. Since 2008, we’ve attacked widgets, Facebook pages, and ads on desktop and mobile. #HTML5 #mobile #platform
3,557 followers |

Mixx

Your blend of the web.
3,129 followers |

NewsGator

Bringing Enterprise and Government 2.0 Social Computing features directly into Microsoft SharePoint.
3,126 followers |

Sawhorse Media

Makers of @MuckRack, The @ShortyAwards, @Listorious, @VentureMaven and more...
3,121 followers |

HopStop.com

Get walking, biking and mass transit directions in 62 cities worldwide. Take HopStop anywhere you go with our free iPhone, Android and BlackBerry apps.
2,859 followers |

Scott Brown

International man of normalcy. Also, work on @GoogleDisplay team. Tweets are my own opinion but tend to track media, advertising, tech and ad agencies.
2,856 followers |

Paperless Post

Correspond with style and intention. (Twitter correspondences by Stephanie Shih. For help, contact Ellie at @pp_support.)
2,780 followers |

TrialPay

TrialPay’s transactional advertising platform boosts revenue and converts more customers for online merchants by placing targeted promotions around transactions
2,607 followers |

MIH SWAT

SWAT labs, part of MIH SWAT, a Division of Naspers. We build fun stuff like feedalirz and ShareMyMap.
2,336 followers |

TweetDeck Recommends

All the latest news from the TweetDeck Recommends column in TweetDeck
2,230 followers |

Snipurl

Playing with Twitter to share new features/updates to Snipurl, and to see people's publicly shared URLs for our own Interesting Snips.
1,585 followers |

GroundLink

1,557 followers |

challengepost

A platform and network for meaningful competitions.
1,491 followers |

Milo

Local shopping. Find it local. Get it now!
1,136 followers |

FanChatter

We promote fan content (tweets by co-founder Marty Wetherall, @MCWet)
872 followers |

twiggit

twiggit is an automated service that lets your friends on twitter know what articles you digg.
520 followers |

Social Control

Social Control creates social apps for the world's leading brands.
442 followers |

MagazineRadar.com

Stay ahead with industry news, ad sales tips, and updates on events and products. Our database tracks advertising trends in over 3,000 print publications.
415 followers |

TweetMixx

176 followers |

BlogRovR

174 followers |

clipmarks

155 followers |

David Dundas

Social Cord is a Premium Content Billing Platform for Social Networks
135 followers |

Tweetboard Support

96 followers |

OurHistree

Create a living record of who you are, where you've been, and what inspires you using photos, videos, words, or music.
67 followers |

colaab

Updates from colaab - the real-time collaboration app.
65 followers |

springpadit

44 followers |

Podclass

Podclass is an fbFunded startup that enables people to teach online courses on any subject & get paid for their knowledge. Teach, learn, connect within Facebook
28 followers |

Curated by Elizabeth B Closmore

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