Question: what are the different tools/software used for data warehousing?
Answer: Redshift. Amazon Redshift, one of the most popular cloud services from Amazon Web Services, is a fully-managed, analytical data warehouse that can handle petabyte-scale data, and enable analysts to query it in seconds. ... 
BigQuery. ... 
Stitch. ... 
Blendo. ... 
Fivetran. ... 
Qlik. ... 
Chartio. ... 
Looker.