Have you ever wanted to tweak your ship fittings outside of EVE Online’s client? If so, the latest CCP dev blog is worth reading. It talks about a recent update to the CREST API that allows third-party apps (like killboards and fitting applications) to save fits to your EVE character. The blog offers a few examples using Fleet-Up, Pyfa, and zKillboard. It also addresses potential security concerns by suggesting that you double-check whether or not a given app is “requesting any permissions it should not be or that you are not happy with giving it.”
If your game information does become compromised, CCP provides a web link from which you may revoke third-party access.
Source: Dev blog