The North Carolina State Board of Elections is the only state elections office that provides the progress of checking petitions on its website.
Here is the link that shows the progress of current petitions. The only three party petitions circulating are the No Labels Party, the Constitution Party, and the Forward Party. No Labels already has enough valid signatures, but apparently No Labels will continue to collect more signatures just for safety.
The website shows past petitions as well. The parties currently on the ballot are Republican, Democratic, Libertarian, and Green.