Abstract: Big Data is emerging technology era implicates to handle huge amount of data to store, retrieve, manage, analyzed and processing. Big Data handles data like structured , semi structured and unstructured data for different applications like E-commerce, Hospital, HealthCare, Social Media, Cloud Computing, IOT based and many more. for storage, management and processing different tools are required to handle such peta and tera bytes amount of data. Traditional tools was not unable to perform management and analysis of complex, semi-structured ,and unstructured data. Big Data has different tools to handle, managed, querying different categories of mainly unstructured and semi-structured data using like Cassandra, Spark, Hadoop, Map-Reduce, Couch DB, Mongo DB and many more tools helping out developers to perform different operations on it.