AllSides Technologies Inc. is an American company that estimates the perceived political bias of content on online written news outlets.

Each source is ranked by unpaid volunteer editors, overseen by two staff members holding political biases different from each other.

[3] AllSides was founded in 2012 by John Gable, a former Republican political aide turned Silicon Valley manager working at Netscape, and Scott McDonald, a software developer.

[3] In 2019, The Guardian columnist John Harris lamented that his experience using AllSides did not help him, as he hoped, to take the mutual loathing out of his news diet.

[12] Dashka Slater includes AllSides in a list of organizations with a nonpartisan mission to encourage Americans to interact respectfully.