Ask HN: What did you make this year?
Here, I'll even start.
In January I made http://wagr.herokuapp.com/ in a weekend. It takes a future-dated wager and, if things are still working, emails you on the date you told it to remind you to settle up.
In April I made http://www.redditlater.com/, which is basically Buffer for Reddit.
In May, I made https://addressbin.com/, an email-marketing service with few features to discern it from a circa-1990 mailing list.
In June, http://learnxinyminutes.com/ was hastily assembled and released. It contains community-provided quick code references for way more computer languages in way more human languages than I ever expected. This was probably the best thing I did this year. You may recall tutorials from this set hitting HN repeatedly for a short time until everyone was sick of it.
In December I rewrote the marketing copy for Address Bin to produce https://easyecourse.com/, which provides trickle email campaigns with a minimal interface.
But enough about me. What did you build in 2013?