I'd give nzb.su a try. I started using them a few weeks ago as an auxiliary when I was having issues with nzbmatrix. In my short few weeks of using it, the API

I'd give nzb.su a try. I started using them a few weeks ago as an auxiliary when I was having issues with nzbmatrix. In my short few weeks of using it, the API seems better than nzbmatrix, but the community / comments on files is near nonexistent. If you're only looking for something to hook up to sickbeard / couchpotato though, it should do the job just fine.