The programmer was also one of the original developers of Reddit and authored the RSS specification when he was just 14 years old.
Swartz was set to begin a federal trial next month over charges of computer fraud, for which he had plead not guilty. The charges related to 5 million academic papers that Swartz allegedly downloaded from the academic online archive JSTOR, which costs money to access if you are not affiliated with a college/University. Prosecutors claimed he intended to share the files, for free, online after having stole them through illegal access on M.I.T's campus.
The programmer was facing 35 years in prison, and a $1 million fine if convicted.
Last year, Swartz also co-founded Demand Progress, a group to promote social justice issues online. The group helped take down last year's SOPA and PIPA Internet censorship bills.