The Central Board of Indirect Taxes and Customs (CBIC) launched an e-compendium of CESTAT case laws. These case laws pertain to Customs, Excise and Service Tax, the ratios of which are still relevant in the GST regime.
The Complete case laws can be accessed at: https://www.cbic.gov.in/resources/htdocs-cbec/home_links/E-Compendium%20of%20CESTAT%20Case%20Laws.pdf