Lots of third party options, BUT to me the best one is just to sync to your Google account and then manage them in your web browser. That also helps should you ever change phones as your Contact list is readily available anywhere you set up your Google Account or if you need a quick peek, then anywhere you can get access to a web browser.
For LG Phones there's also LG Bridge, which is an iTunes of sorts (also available for Mac) that lets you sync stuff up with your computer. Not sure if it allows Contact editing though, but I do know it allows you to sync/save a copy in your computer.