stickK.com is an American internet company that enables users to make commitment contracts in order to reach their personal goals.

[3] They sign a legally binding contract that will send their money to third parties, including either individuals (referred to as "Friend or Foe") or a number of organizations and charities.

[11] Usage of the site is free for individual users, with the initial business plan involving advertising revenues.

[9] The company later created non-free B2B products, offering corporations a co-branded version of StickK for the use of their employees or members.

[4] StickK also appears in the [popular press] book More Than Good Intentions, where it is mentioned as an example of a type of commitment device that can be adapted to development programs in microsavings and health.