9 for me.  

Amber, Amethyst, Citrine, Fountain, 0xChat, Pokey, Primal, Wavlake, Zapstore 

If it doesn't work right or has a bad UI, I probably will stop using it. Some only last a few minutes. These work well enough for now. 

That said, I use Amethyst and Fountain by far the most, because they're so good.