Question: what are the best etl tools?
Answer: Xplenty. Xplenty is a cloud-based ETL and ELT (extract, load, transform) data integration platform that easily unites multiple data sources. ... 
AWS Glue. ... 
Alooma. ... 
Talend. ... 
Stitch. ... 
Informatica PowerCenter. ... 
Oracle Data Integrator.