Jain firkas (main sects) are two:

• Digambar
• Śvetāmbara

There are also several sub-sects within these two main groups, for example:

• Within Śvetāmbara: Murtipujak (Deravasi), Sthanakvasi, Terapanthi.
• Within Digambar: Terapanthi (Digambar), Bisapanthi, Taranpanthi, Gumanapanthi, etc.

You can read a concise explanation of these differences here and see how Jain Knowledge categorizes sub-sects .