From $100/mo (published Stitch pricing) Stitch
Managed ELT
Managed data loading into analytics destinations. Existing Stitch pipelines remain relevant, while new buyers are directed toward Qlik Talend Cloud.
Ingestion and ELT
Managed connectors that copy SaaS and database data into a warehouse on a schedule.
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From $100/mo (published Stitch pricing) 
Open source Airbyte
Managed ELT
Open-source ELT with a hosted Cloud option. Free if you self-host, credit-based on Cloud, capacity-based on the enterprise plans.
Free tier Fivetran
Managed ELT
Managed ELT connectors that copy SaaS and database data into your warehouse. Free up to 500k rows a month, usage-based after that.