Airbyte is a data integration platform that syncs data from APIs, databases, and files into warehouses and lakes, available self-hosted or as a managed cloud service.

Fivetran is a commercial, fully managed data movement platform with maintained connectors, automated schema handling, and consumption-based pricing.

Apache Spark is an open-source distributed compute engine for batch processing, SQL, machine learning, and stream processing across large clusters.

dbt is a transformation framework that compiles modular, version-controlled SQL models and runs them inside the warehouse, with testing, documentation, and lineage built in.

DuckDB is an open-source, in-process OLAP database — an embeddable columnar SQL engine that queries Parquet, CSV, and dataframes with no server to run.

Apache Airflow is the widely adopted open-source orchestrator where pipelines are Python-defined DAGs, with a large provider ecosystem and multiple managed offerings.