My Favorite 2010 Startups Twitter List by Robert Scoble on Listorious

tinychat

wicked easy video chat

357,919 followers | Follow

TweetDeck

TweetDeck is your personal browser for staying in touch with what’s happening now, connecting you with your contacts across Twitter, Facebook and more.

334,355 followers | Follow

HootSuite

Monitor keywords, manage multiple Twitter, Facebook, LinkedIn & WordPress profiles, schedule messages, and measure your success. For support @HootSuite_Help

294,047 followers | Follow

TwitPic

Share photos on twitter - follow @noaheverett for other unofficial news

90,680 followers | Follow

Digsby

Digsby lets you manage all your IM, email, and social network accounts from one easy-to-use application.

85,599 followers | Follow

Seesmic Announce

I make updates and announcements for Seesmic.com Send feedback/questions to @askseesmic

75,377 followers | Follow

Dropbox

File syncing, sharing and backup that rocks. Follow @Dropboxops for status!

50,424 followers | Follow

TweetMeme

Tracking Twitter Memes

48,009 followers | Follow

TweetPhoto

TweetPhoto is a real-time photo sharing service for the social web.

45,742 followers | Follow

foursquare

foursquare: when the city is your playground!

37,991 followers | Follow

Spotify

Everyone loves music

35,877 followers | Follow

CoTweet

CoTweet is How Business Does Twitter. Need help? follow @cotweet_support.

33,339 followers | Follow

Tweetie

rockin' Twitter client for iPhone and iPod touch, follow @atebits for more

32,826 followers | Follow

HubSpot

Inbound Marketing Software - Connect with more HubSpotters on Twitter: http://www.HubSpot.com/Twitter

31,521 followers | Follow

boxee

avner ronen, boxee founder. when i don't boxee, i try to read or sleep..

27,439 followers | Follow

Vuze

Find. Download. Play. HD Entertainment.

22,130 followers | Follow

KISSmetrics Tweets

We are building a metrics solution designed for developers, marketers and product managers.

19,337 followers | Follow

SoundCloud

We Move Music

18,267 followers | Follow

Grooveshark

My name is Ben. Let me help you.

16,902 followers | Follow

gdgt

gdgt is the new consumer electronics site by Peter Rojas and Ryan Block -- the guys behind Engadget and Gizmodo.

16,866 followers | Follow

SocialToo

SocialToo - Your companion to the Social Web. Tools, Apps, and Scripts that complement your social experience.

16,038 followers | Follow

Square, Inc.

Accept payments. Everywhere.

13,266 followers | Follow

Gowalla

Go out. Go discover. Go share. Gowalla.

12,955 followers | Follow

Zynga

We love social games. A lot.

12,587 followers | Follow

posterous

I am the easiest way to post everything by email. @a4agarwal and @garrytan created me. Email me at post@posterous.com to use me.

11,830 followers | Follow

GitHub

Social coding? Pretty awesome.

11,478 followers | Follow

TeslaMotors

The official Tesla Motors twitter.

10,721 followers | Follow

Klout

Measuring influence across the social web. Follow to be the first to learn about new Klout features.

10,609 followers | Follow

Tumblr

The easiest way to blog.

10,429 followers | Follow

Wolfram|Alpha

Your official source of news about the computational knowledge engine, Wolfram|Alpha

10,242 followers | Follow

Aardvark

Aardvark discovers the perfect person in your network to answer any question in minutes.

9,245 followers | Follow

Groupon Chicago

Cool stuff to do in Chicago at unbeatable prices

9,189 followers | Follow

Brizzly

Brizzly is a social media reader. You put your tweets and Facebook messages in it.

8,503 followers | Follow

dropio

simple private realtime file-sharing and collaboration

8,130 followers | Follow

OneRiot

Hi - we're a realtime search engine! Search with us, and you’ll find fresh, socially-relevant news, blogs, and stories– the results that matter most, right now!

7,765 followers | Follow

MOG

Your best music source for the latest artist news, reviews, songs, and posts from across the blogosphere

6,689 followers | Follow

feedly - Elisa MK

A magazine-like startpage. A fast and stylish way to read and share the content of your favorite sites and services.

6,632 followers | Follow

oneforty inc.

Twitter is confusing. What's the value? How do you start? Apps make Twitter better. Find yours! what can YOU do in oneforty?

6,250 followers | Follow

Ning

Ning lets you create and join new social networks for your interests and passions. For quick questions, @NingAdvocacy is here to help!

5,821 followers | Follow

Yammer

#1 Enterprise microblogging platform. Changing the way your company works.

5,474 followers | Follow

Apture

Apture brings deep, rich, three dimensional storytelling to your website. Integrate videos, maps, music, images & more from over 50+ sources with one click.

5,279 followers | Follow

wibiya

One application to rule them all ! 1st stop - Interactive tools for your website / blog. Want to talk? @wibiya us. Have fun by @DrorCeder & @DanielTal

4,604 followers | Follow

Lijit Networks

Free search tool for bloggers providing trusted results and stats! Maintained by @tarable

4,467 followers | Follow

waze

Waze is free social mobile application that enables drivers to build and use real-time road intelligence to find the most optimal route to their destination.

4,243 followers | Follow

YFrog

United in frog-land with ImageShack

4,171 followers | Follow

Peldi from Balsamiq

Peldi Guilizzoni, founder and CEO of Balsamiq, makers of Balsamiq Mockups. Email me (peldi@balsamiq.com) or @ me if you have questions, or just to say hi! :)

4,147 followers | Follow

Backupify

Backing up your online accounts, including twitter, facebook, gmail, google docs, flickr, and more

3,781 followers | Follow

Whrrl

Get your updated version 2.3 of Whrrl now in the app store and start checking in! Tweets from Jeanna, Community Manager & Joni, Customer Service Lead.

3,628 followers | Follow

Flickchart

We're an addictive social network & tool built for people to discover their all-time favorite films & share lists with friends. Follow us for news and updates!

3,578 followers | Follow

Topsy

A search engine powered by tweets

3,477 followers | Follow

Mobile Roadie

The simple and inexpensive way for anyone to build and manage their own iPhone and Android App.

3,314 followers | Follow

DISQUS

Disqus is a comment system. Hundreds of thousands of sites, from small blogs to large publications, rely on it to power and manage their discussion communities.

3,105 followers | Follow

SimpleGeo

@mg and @joestump are up to something.

3,023 followers | Follow

Prezi

Prezi is a zooming story telling and presentation tool that helps you create outstanding visuals for your thoughts.

3,020 followers | Follow

bitly

Shorten Long URLs With bit.ly

2,981 followers | Follow

WildfireApp.com

With Wildfire Campaign Builder you can easily create branded social media marketing campaigns & simultaneously run them on Facebook, Twitter and your Website.

2,968 followers | Follow

threadsy

pull yourself together

2,824 followers | Follow

hunch

Hunch makes great recommendations by learning your tastes

2,806 followers | Follow

my6sense

my6sense serves you as your 'Digital Intuition', by prioritizing content from your Twitter & RSS streams on your iPhone

2,782 followers | Follow

BackType

We organize conversations.

2,715 followers | Follow

Blippy

Blippy is a fun and easy way to automatically tell people about your favorite purchases.

2,714 followers | Follow

Layar

See the World! A beautiful, fun augmented reality app that shows you the things you can't see

2,701 followers | Follow

Gist

Know More About Who You Know

2,520 followers | Follow

Akoha

Akoha is a social reality game played in real life where you carry out missions that involve performing small acts of kindness from one person to another

2,325 followers | Follow

heroku

2,066 followers | Follow

Echo

Creators of Echo! Also see @KhrisLoux (CEO) @ChrisSaad (Product), @NancyCole (Evangelist)

1,863 followers | Follow

nextstop

We help you discover the most interesting things to do around the world. Say hello & share your own experiences with us so we can tweet them!

1,630 followers | Follow

AppsFire

Discover the iPhone/iPad apps of your friends. Share your favorite apps. Re-discover your App Store. created by @ourielohayon and @ylechelle

1,439 followers | Follow

superfeedr

Real-time feed parsing in the cloud for web-developers

1,385 followers | Follow

Tapulous

1,256 followers | Follow

SkyGrid

High-quality financial content from trusted sources, in real-time.

1,241 followers | Follow

Taptu

Explore and discover the mobile Touch Web - sites, apps content optimized for touchscreen mobiles. Visit Taptu.com or get the free iPhone or Android app.

1,208 followers | Follow

Audioboo

audio recording to the cloud. In a nice way...

1,178 followers | Follow

True/Slant

'News is more than what happens.'

1,107 followers | Follow

Wakoopa

We know software. What do you use?

1,106 followers | Follow

evri

Semantic Services start-up in Pioneer Square

1,090 followers | Follow

pixelmags

PixelMags #Mobile #Digital #Publishing Platform 4 #Magazines, #Newspapers, Books & Catalogs; Monetize your content w/ #iPhone #iPad #Apps! Reg #Apple Developers

970 followers | Follow

Plancast

The guys (@mhendric & @jaymon) behind plancast.com -- the easiest way to share your upcoming plans

961 followers | Follow

nextbigsound

Actionable Intelligence for the Music Industry

943 followers | Follow

Osnapz

Rewarding your social media contributions

852 followers | Follow

Expensify

We do expense reports that don't suck!

810 followers | Follow

Shadow Fit

Personalized fitness programs that can be used at home or in a gym, in print or on a media device. Striving to be the most trusted fitness community on Earth!

692 followers | Follow

AppMakr | PointAbout

Apps for Everyone! Make a native iPhone app for $199

677 followers | Follow

inbox2

Inbox2 replaces expensive email synchronization tools.

611 followers | Follow

polleverywhere

Simple text message voting

611 followers | Follow

rescuetime

597 followers | Follow

Cliqset

Cliqset - Discover. Share. Discuss.

582 followers | Follow

Redbeacon

Redbeacon allows consumers to get price quotes and book appts for any local service!

574 followers | Follow

Broadersheet

Your personalised news reader for the iPhone. http://broadersheet.com

535 followers | Follow

cloudkick

We build tools to make it easy to manage and monitor cloud servers on many providers

522 followers | Follow

Skimble

The ultimate companion for your active life! Check out Skimble's location-based social iPhone & the web apps. Co-creators @marialy @vanrenen

517 followers | Follow

VOKLE

Enlighten the world. (tweets by shant)

505 followers | Follow

LiveFyre

A site dedicated to live conversation about what's going right now. News, videos, sports, tweets... Start and join Fyres about any content that exists online!

492 followers | Follow

Vanilla

Vanilla is open source forum software that powers hundreds of thousands of sites on the web.

448 followers | Follow

Aloqa

Mobile service that notifies you of friends and favorites nearby in real time.

420 followers | Follow

Payvment

Payvment is a free shopping cart Web Service that enables anyone to add e-commerce anywhere instantly.

407 followers | Follow

Flight Caster

FlightCaster Predicts Flight Delays

356 followers | Follow

CloudContacts

Customer service for CloudContacts - the business card scanning and transcription service. http://www.cloudcontacts.com

356 followers | Follow

Team Rippol

Rippol is a video discovery engine that enables people to discover watch and share online video content in real-time.

331 followers | Follow

SunRun

Clean Solar Energy for your Home. Save Money, Feel Great.

329 followers | Follow

Snapily

Snapily.com,is a revolutionary photo merchandizing service, which enables users to add Special Effects to their personal images and print them on any product

322 followers | Follow