In Jainism, Tirthankaras are spiritual teachers who have attained perfect knowledge (Kevala Jnana) and guide others on the path of liberation. According to Jain tradition, there are 24 Tirthankaras in each half of every time cycle (Avasarpini and Utsarpini). We are currently in the fifth era (Avasarpini) of the present time cycle, and all 24 Tirthankaras of this era have already appeared.

Past (Current Avasarpini) 24 Tirthankaras:

1. Rishabhanatha (Adinath)
2. Ajitanatha
3. Sambhavanatha
4. Abhinandananatha
5. Sumatinatha
6. Padmaprabha
7. Suparshvanatha
8. Chandraprabha
9. Pushpadanta (Suvidhinatha)
10. Shitalanatha
11. Shreyansanatha
12. Vasupujya
13. Vimalanatha
14. Anantanatha
15. Dharmanatha
16. Shantinatha
17. Kunthunatha
18. Aranatha
19. Mallinatha
20. Munisuvratanatha
21. Naminatha
22. Neminatha
23. Parshvanatha
24. Mahavira (Vardhamana)

Future Tirthankaras:

According to Jain scriptures, after the 24th Tirthankara Mahavira, there will be no more Tirthankaras in the current Avasarpini (descending half-cycle). The next Tirthankaras will appear in the next Utsarpini (ascending half-cycle), which will occur after the current period of spiritual decline has ended.

The first Tirthankara of the next Utsarpini will again be Rishabhanatha. Jain texts such as the "Trilokasara" and "Tiloya Panatti" provide detailed cosmological calculations about the appearance of future Tirthankaras, but individual names and biographies are not generally provided for the Tirthankaras of future cycles.

Summary:

• All 24 Tirthankaras of the present Avasarpini have already appeared.
• There will be no more Tirthankaras in the current time cycle.
• The next set of 24 Tirthankaras will appear in the next Utsarpini, starting with Rishabhanatha.

If you want details about the lives or teachings of any particular Tirthankara, feel free to ask!