Amazon Athena vs Corral: What are the differences?
Developers describe Amazon Athena as "Query S3 Using SQL". Amazon Athena is an interactive query service that makes it easy to analyze data in Amazon S3 using standard SQL. Athena is serverless, so there is no infrastructure to manage, and you pay only for the queries that you run. On the other hand, Corral is detailed as "A serverless MapReduce framework written for AWS Lambda". Corral is a MapReduce framework designed to be deployed to serverless platforms, like AWS Lambda. It presents a lightweight alternative to Hadoop MapReduce.
Amazon Athena and Corral can be categorized as "Big Data" tools.
Corral is an open source tool with 611 GitHub stars and 16 GitHub forks. Here's a link to Corral's open source repository on GitHub.