Who wrote Nibandhmala and Shatapatre?

The Nibandhmala was written by Vishnushastri Chiplunkar and the Shatapatre was written by Lokahitawadi alias Gopal Hari Deshmukh. Both commented on various social and cultural issues

Vishnushastri Chiplunkar was a Marathi writer, whose writings have had a decisive influence on modern Marathi prose style while Gopal Hari Deshmukh was an activist, thinker, social reformer and writer from Maharashtra who fought against the evils of society.

For further reading check the following articles:

• List of Socio-Religious Movements
• Savitribai Phule
• Indian Education System During British Rule