Which Python repositories are best for experienced developers?

Based on objective C-Rank data across merge rates, review turnaround, and first-PR success, the top Python repositories include ralforion/orionbelt-ontology-builder, FutureTense/keymaster, MarketSquare/robotframework-robocop.

How does GetMerged rank repositories?

GetMerged scores public GitHub repos from S to D tier using objective metrics: external PR merge rate, time to first response, time to merge, and first-timer success rate.

Contributor Matchmaker

Best Python Repos to Contribute To

Matched to your experience level using real merge rates, maintainer response times, and first-PR success data.

First-time contributor Experienced contributor

73% matchB Tier

ralforion/orionbelt-ontology-builder

Browser-based ontology workbench for OWL ontologies and SKOS vocabularies. Streamlit + rdflib, no Java, no Protégé. Bulk operations, OWL-RL reasoning, gist upper-ontology starters, merge-aware imports, interactive vis-network graph.

C-Rank 81.4 — top-tier maintainer discipline
Active in the last month
Merges 100% of outside pull requests

View Scorecard How to Contribute

73% matchS Tier

FutureTense/keymaster

Home Assistant integration for managing Z-Wave enabled locks

C-Rank 80.9 — top-tier maintainer discipline
Active in the last month
Merges 100% of outside pull requests

View Scorecard How to Contribute

72% matchS Tier

MarketSquare/robotframework-robocop

Tool for static code analysis and formatting of Robot Framework language

C-Rank 84.4 — top-tier maintainer discipline
Active in the last month
Merges 97% of outside pull requests

View Scorecard How to Contribute

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