Best alternatives to Duckle in 2026

Every company that pulls data from several places — a payments provider, a CRM, a warehouse — ends up needing something to move and reshape that data automatically, on a schedule, without someone copy-pasting spreadsheets. That's what an ETL tool does: it Extracts data from a source, Transforms it into the shape you need, and Loads it somewhere useful. Duckle is one of these tools, built to be run on your own infrastructure instead of a vendor's cloud. Duckle is an open-source ETL platform where pipelines can be built on a visual drag-and-drop canvas (385 components) or written directly in code, then compiled automatically to SQL and executed on DuckDB, a fast embedded analytical database. It ships with 188+ connectors to common databases, warehouses, SaaS tools and storage backends, an integrated dbt step for transformation-layer teams, and an MCP server so AI agents can trigger or inspect pipelines. A local AI assistant ('Duckie') can also generate pipelines from a natural-language description. It's dual-licensed MIT/Apache-2.0, self-hosted, and sends no telemetry — squarely aimed at teams that need data sovereignty and want to avoid recurring per-row pricing.