The deals allow Radiopaq.com, which launched in April, to feature news and podcasts from Sky News and The Guardian.
Prash Vadgama, president of Radiopaq, said: "Our priority has been to ensure that all Radiopaq content is of the highest quality, and our partnerships with The Guardian and Sky demonstrate our commitment to this aim.
"Our listeners know these brands to be reliable and engaging sources of information and can be assured that, when logging on to Radiopaq.com, they will be provided with the best news and podcasts available on the web."
Sky News will run a news feed with the latest breaking stories on Radiopaq's Snapshot page and will also upload its podcasts, which will feature alongside podcasts from The Guardian.
Matt Wells, head of audio at the Guardian, said: "The Guardian has an extremely strong online presence, and we're always looking at ways of building on that strength.
"Our award-winning podcasts have been a big success for us in the past year or so, and we're keen to make sure they're available on as many platforms as possible."
Oliver Lewis, commercial director at Sky News, said: "Sky News is renowned for being at the forefront of innovation in news, and our partnership with Radiopaq is an opportunity to showcase our audio content, including up to the minute news and thought-provoking analysis and comment."