ProPublica is a prominent American nonprofit news organization that produces investigative journalism.

ProPublica was founded by former Wall Street Journal editor Paul Steiger and San Francisco-area billionaires Herbert and Marion Sandler in 2007 and launched to much attention shortly thereafter. It is based in New York and had 43 full-time employees as of 2012.

Much of ProPublica’s funding has been provided by the Sandlers’ foundation, which pledged up to $10 million per year for the first three years; other foundations and individuals have provided smaller amounts. The organization received a $1.9 million grant from the Knight Foundation in 2012 to expand its data journalism operation, including the Pair Programming Project,which allows news programmers to use the ProPublica offices to work on data projects. It also received a $1 million award from the MacArthur Foundation in 2014. ProPublica employed 34 journalists in 2012, and in 2011 it spent $9.6 million. That year, for the first time, it raised more than half of its funding from sources outside of the Sandlers. By 2012, the non-Sandler funding had reached 62%.

Though it has a regularly updated website and a presence in social media, ProPublica distributes its stories primarily by offering them to traditional news organizations for free. It also releases its stories through a Creative Commons license, and, in 2012, began publishing some stories as e-books. As of early 2011, ProPublica has worked with more than 100  publishing partners, including The New York Times, The New Yorker, NPR, The Guardian, Frontline, and Upworthy. In some collaborations, ProPublica and the news organization share reporting duties and bylines. In one collaboration with Digital First Media, news organizations get pre-publication access to ProPublica’s apps. In another with the Huffington Post, the two organizations used volunteers to search political ad spending records. ProPublica also collaborated with The Guardian and The New York Times in reporting on the NSA documents leaked in 2013 by Edward Snowden.