OpenDataDiscovery Platform vs Spline

OpenDataDiscovery Platform is an open-source catalog for finding and governing data products across data teams. Search and facet filters help users locate metadata by source, owner, or tag, then explore ownership and related links. The platform traces data objects and microservices end to end, imports data quality test results, and shows dataset quality status. It also catalogs machine-learning experiment metadata and lineage and supports experiment logging, connecting data science and data engineering work. Teams can access collected metadata through a web interface or REST API, and deploy with Docker Compose, Kubernetes and Helm charts, or AWS Marketplace QuickLaunch. The catalog uses an open metadata collection standard to connect catalogs, tools, and feature stores; Lookup Tables support reference data governance. ODD supports LDAP authentication and USER and ADMIN roles. Its documentation cautions against simple login-form authentication in production. Metadata attachments are limited to 20 MB, while links can point to larger or remotely stored files. The platform is free and open source, with public development.

Spline is a free, open-source tool for tracking data lineage and pipeline structure. Agents support Apache Spark and arbitrary functions written in Python 3.9 or newer, with a proof-of-concept adapter for OpenLineage metadata. They send metadata to the server through HTTP REST or Kafka, while the Consumer API exposes lineage to the web interface and third-party applications. Spline converts that information into graphs for visualization. The server stores lineage in ArangoDB, requiring version 3.11 or newer. Components are available as Docker containers and JAR or WAR artifacts, and the server can run in a standard Java environment. The project identifies regulatory documentation, business-logic records, and performance-bottleneck analysis as uses. By default, the Spark agent tracks persistent writes such as files, Hive tables, and databases. The Apache-2.0 project is hosted by AbsaOSS, with self-hosted components.