I would like to acknowledge the free and open source software community for this book. I am especially thankful to WealthEngine and my colleagues at WealthEngine for their moral and technical support in writing this book. The encouragement from family and friends kept me going through the many late nights required to complete this book.

The support from the Packt Publishing team for the last six months has been remarkable. I would like to thank the technical reviewers Swathi Kurunji, Ramachaitanya Kavuluru, Vaibhav Mohan, Paul Weinstein, and Jayraj for their valuable feedback. I would also like to thank Kartik Vedam as he was pretty vital in keeping my constantly sliding schedule in check. I appreciate the efforts made by Parita Khedekar and Ankita Thakur to keep me on my toes to finalize this book.