So I don't like Let's Encrypt, if Mozilla "kills" WoSign/StartCom, what are my options if I want a cert for free?
I'm not the kind of person who believes in boycotting (especially in this case, where I'd be all alone it seems :-) but if I could avoid them, I would. If not, no biggie.
The suggested client, CertBot, is an EFF project, but there's a wide variety of alternatives - https://letsencrypt.org/docs/client-options/
Funny you should mention that...
Look at the SSL certificate of this site.