Here’s the difference between Singer and Xplenty. The comparison is based on pricing, deployment, business model, and other important factors.
Singer is an open-source standard for writing scripts that move data between databases, web APIs, files, queues, and just about anything else you can think of
Xplenty is a Data Integration Service for ETL to read data from various sources into hadoop and enable the users to prepare the data for analytics. Xplenty provides web based UI tool to do this without coding. Integration with close to 30 other services, including SAP Hana, Rackspace and SoftLayer clouds, Google Analytics and MongoDB, among others. Provides data transformation tasks, from simple sorting and aggregation to sophisticated functions and data manipulations; When finished, transformed data can be placed back in the source or any other database of choice supported by xplenty.