Sithars is a free E-Book available on Android that provides comprehensive information about Siddhars, the saints of India. The E-Book is available in English and Tamil and aims to consolidate all the scattered information about the 18 Siddhars in an organized way.

The developer, shasunder, has worked hard to collect information from various sources and create this E-Book. The E-Book is still a work in progress, with additional details being added. If you wish to have a printed version, you can purchase it for Rs. 250, including postal charges.

Overall, Sithars is a valuable resource for those interested in learning about Siddhars and their teachings. It is easy to use and provides a wealth of information in a well-organized manner.