A lightweight ETL framework
Why people like Mara
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A lightweight ETL framework with a focus on transparency and complexity reduction.

Mara's Features
  • Data integration pipelines as code: pipelines, tasks and commands are created using declarative Python code.
  • PostgreSQL as a data processing engine.
  • Extensive web ui. The web browser as the main tool for inspecting, running and debugging pipelines.
  • GNU make semantics. Nodes depend on the completion of upstream nodes. No data dependencies or data flows.
  • No in-app data processing: command line tools as the main tool for interacting with databases and data.
  • Single machine pipeline execution based on Python's multiprocessing. No need for distributed task queues. Easy debugging and and output logging.
  • Cost based priority queues: nodes with higher cost (based on recorded run times) are run first.