There are a lot of snippet organizers, but for me, the Github Gist is the best. I love making gists. Like this handy snippet for tracking outbound links in Google Analytics:
Or get random array item:
And more. Basically, any time I solve some little code problem (or more likely find the solution on StackOverflow) I just make a gist for next time.
(By the way, if you want to add Gists to your WordPress blog like I am, the Embed GitHub Gist plugin is what I’m using)