Rishi Kacker and Matt Pauker are the two founders of Voltage, Voltage makes security software that can encrypt documents, files, and e-mails at the touch of a button.

The two 25 years old started it a a summer research project while at Stanford studying using the basement office in the engineering building as their office before entering their business plan into a competition, A competition which they won.

They both has both graduated, In 2002, Rishi graduated from Stanford with a Bachelor of Science in Computer Science. Rishi also studied economics and finance while working towards a Masters in Management Science and Engineering. Matt received his B.S. in Computer Science from Stanford that same year.

While at Stanford, Rishi helped build the Scribe E-mail System, a research project designed to deploy a complete secure email solution and was also involved in a strategic planning venture, teaching of computer science, and in the Business Association of Stanford Engineering Students (BASES)

Matt was responsible for driving its technical vision and architecture. He currently manages the Voltage SecureData product line and Voltage’s key management platform, used by the world’s largest enterprises and software companies to secure their most sensitive data.

The company currently has around 75 employees and 130 big-business customers .

Aodhan Cullen is the founder of statcounter, a free online visitor stats tool he founded in 1999, It offers its members the chance to grow and improve their online businesses by allowing them to monitor the number of hits to their website; the geographical location of visitors; the various pages a visitor views; keywords used to find the site plus other features.

He now 27 years old founder founded the company when he was 16, but it was way back before then that he started his entrepreneurial life, at 12 he started first business, a résumé-typing service.
He then moved onto designing Web pages for paying clients, who often wanted to know how many people were visiting their sites.

Until at 16, he stumbled unto his current business/idea statcounter and now the rest of the story lies with
him in Ireland.

StatCounter currently has over 1.5 million users and tracks more than 9 billion page views per month across its network of 2.2 million Web sites.

Cullen currently resides in Ireland with his wife Jenni.

Alexander is the 25 years old entrepreneur and founder of imageshack, a free image hosting website. The site was launched in in November 2003.

Three years ago, Levin got the idea for ImageShack as a senior in high school while chatting in online message boards. He noticed a need for a place to store and share images separate from the forums, which didn’t provide enough storage space. With a bit of work, ImageShack was born.

In 2008, ImageShack also raised $15 million from Sequoia Capital aid to help better the media hosting site’s quality of service.

Imageshack also launched a image sharing tool called yfrog something very similar to twitpic to share online photos on twitter.

Daniel Ek is the 27 years old serial entrepreneur behind spotify, a legal music service he founded with Martin Lorentzon that helps people discover, browse and play music.. He started his first company at the young age of 14 in 1997 and soon joined the IT Gymnasiet in Sundbyberg at age of 15.

Prior to Spotify Daniel founded Advertigo, the advertising company acquired by TradeDoubler and has been a part of the Nordic auction company Tradera (acquired by Ebay) and Evertigo. Daniel’s previous jobs include CTO at Jajja Communications, CTO at Stardoll and CEO of µTorrent, the worlds most popular BitTorrent client with more than 100 million downloads.

Daniel signed a contract on behalf of Spotify with 7digital music service in 2009, allowing Spotify users to purchase tracks.

Daniel also stated that Spotify was founded as a reaction to the decline of the music industry. “People listen to more music than ever, from a bigger diversity of artists he said”. The underlying business has changed from being about ownership to an access model. Spotify facilitates that by offering a service in the cloud.

In his interview with telegraph he said “”The music industry is currently worth $17bn (£10.8bn); it’s going to be $40bn or $50bn soon. There will only be four or five players left in a few years,” he says. “If that’s the case, we will end up with a company worth tens of billions.”

Currently over seven million people have signed up to the website, 250,000 have signed up to the premium service, which costs £9.99 a month in the UK and currently the service make tons of millions of euros each year from advertisers.

Amie Street is an indie online music store and social network service created in 2006 by Brown University seniors Elliott Breece, Elias Roman, and Joshua Boltuch, in Providence, Rhode Island.

They have since graduated and moved the company to Long Island City in Queens, New York.
Their vision for Amie Street is to become “the most fun way to discover and buy music online”, keep music social, and support the artists

Founded in early 2006, Amie Street opened to the public with a pre-alpha version on July 4, 2006

They began negotiations for the round in January 2007. Notable angel investors include Robin Richards, former president of MP3.com and David Hirsch, director of Google’s B2B vertical markets group

Amie Street uses an algorithm to determine song prices based on demand. The price for a track starts at zero when a song is uploaded onto the site. It then rises according to the increased demand and purchase of the song. The maximum price any song will rise to is 98¢

Artists can upload their music directly to the site in MP3 format at whatever quality bit rate they choose, but when a record label or music distributor requires Amie Street to encode the music, they strive to achieve an average bit rate of 256 kbit/s using a variable bitrate.

As users buy songs, the artist is credited quarterly. Artists keep 70% of the proceeds after US$5 in sales for each song
SIMPLE!

Grooveshark is a service of Escape Media Group Inc (EMG), a Gainesville, FL company. EMG was founded in March 2006 by three University of Florida undergrad students(Sam Tarantino,Josh Greenberg and Andres Barreto)

Grooveshark launched in private beta in early 2007, and was initially a paid music download service.
Sam and Josh has since then pursued the business, taking a leave of absence from the University of Florida.

Grooveshark is now a web-based music application built for anyone on the internet to listen to music on-demand at no charge.

They also have cool features such as the Twitter-like social feature allows users to “follow” each other to make it easier to share songs by clicking a special heart icon which adds it to the logged-in user’s list of favorite users.

They’ve signed deals with more than 600 record labels that have allowed their music to be sold through the network.

Tarantino says Grooveshark now has 23 full-time employees.

Grooveshark currently streams between 50 to 60 million songs per month, to more than 400,000 users.
Although they will need to sort out their issues with copyright and stop getting sued, Maybe the new partnership with EMI just might do the deal.