1. Extremozymes and Their Applications 2. Enzymes from Extremely Thermophilic Bacteria and Archaea: Current Status and Future Prospects 3. Role of thermophilic cellulases and organisms in the conversion of biomass to biofuels 4. Microbial adaptation to extreme temperatures: An overview of molecular mechanisms to industrial application 5. Molecular mechanism behind cold and hot adaptation of extremozymes 6. Microbial thermostable hydrolases (amylase, lipase, keratinase) and polymerases: Biology and Application 7. Molecular Adaptations in Microorganisms for Extremozyme Production 8. Application of extremozymes in paper and pulp industries 9. Genetic and protein engineering of halophilic enzymes 10. Halozymes: Sources, catalytic mechanism and potential applications in industries 11. Industrial applications of enzymes from haloarchaea 12. Insights into upstreaming and downstreaming processes of microbial extremozymes 13. Reverse micellar systems as a versatile tool on halophilic biocatalysts 14. Advances in industrial biocatalysis through immobilized extremozymes 15. Biocontrol of fungal phytopathogens in saline soils by halophilic chitinase producing microbes