Which podcast network was founded by 99% Invisible host Roman Mars?

Radiotopia was the podcast network founded by 99% Invisible host Roman Mars. It was created in partnership with the Public Radio Exchange (PRX) and launched in February 2014 as a collective for independently produced, story-driven audio shows.

The network initially featured seven programs, including 99% Invisible, The Truth, Strangers, Love + Radio, Radio Diaries, Fugitive Waves, and Theory of Everything. Its model gave producers considerable artistic control while providing funding, distribution, audience development, and shared support.

Radiotopia expanded rapidly after a 2014 Kickstarter campaign raised more than $620,000 from over 21,000 backers. That campaign helped add shows such as Criminal, The Heart, The Allusionist, and Mortified. The network is associated with PRX, so it is sometimes mistakenly described as a conventional radio broadcaster rather than a podcast collective and distribution network.

Roman Mars remains best known for 99% Invisible, a design and architecture podcast that began in 2010 and helped establish his reputation in independent audio.