Additional

 There are mainly 3 categories of puranas…

1. Maha Puranas (Total 18)
2. Up-Puranas (Total 18)
3. more additional Puranas (Total 29)

Maha-Puranas..

1. Vishnu
2. Narad
3. Padma
4. Garuda
5. Varaha
6. Bhagbata
7. Matshya
8. Kurmya
9. Linga
10. Shiva
11. Skanda
12. Angi
13. Brahmanda
14. Brahma-vaivarta
15. Markendya
16. Bhavishya
17. Vamana
18. Brahma

Up-Puranas

1. Sanatkumar
2. Narasimha
3. Skanda (Abstract)
4. Saiba-dharma
5. Dairbyasas
6. Naradiya (Abstract)
7. Kapil
8. Vamana (Abstract)
9. Oushanash
10. Brahmanda (Abstract)
11. Varun
12. Kalika
13. Maheshwar
14. Sambya
15. Souriya
16. Parashar
17. Marich
18. Vargabh

Additional Puranas

1. Nandikeshwar
2. Shukra
3. Bashishtha
4. Vaguri
5. Manu
6. Vayu
7. Mahesh
8. Kalki
9. Shaiba
10. Aditya
11. Adi
12. Shambhu
13. Bashishtha-Linga
14. Vishnu-dharmottar
15. Brihodadharama
16. Dharma
17. Gauri
18. Neel
19. Ganesh
20. Atma
21. Devi-bhagvat
22. Bhagvat-bhushana
23. Bhagavatamrita
24. Maha-bhagvat
25. Bhagvatamritashar
26. Shree-bhagvat
27. Kaali
28. Devi
29. Bhashkar