Meltano

Open-source alternative in the data integration and ELT space with strong developer community focus

Meltano is an open-source data integration platform that provides ELT (Extract, Load, Transform) capabilities for modern data teams. Originally incubated within GitLab as an internal project, Meltano was spun out as an independent open-source company. The platform is built on top of the Singer standard for data taps and targets, providing a CLI-first, code-first approach to building and managing data pipelines. Meltano focuses on developer experience and extensibility, allowing data engineers to orchestrate data workflows using familiar tools and practices. While Meltano is not strictly an AdTech company, it serves as data infrastructure that AdTech companies and marketing teams use to integrate, transform, and analyze their advertising and marketing data. The platform competes in the broader data integration and ELT space alongside tools like Airbyte, Fivetran, and Stitch. Meltano's open-source nature and focus on developer experience has attracted a community of data practitioners who value transparency, flexibility, and the ability to self-host their data infrastructure.