A powerful Python package to detect duplicate and similar repositories on GitHub. Analyze ecosystem fragmentation, find abandoned forks, and identify alternative implementations.

✅ Find Similar Repositories - Detect repositories solving similar problems ✅ Duplicate Detection - Identify nearly identical repositories ✅ Ecosystem Analysis - Analyze topic fragmentation across GitHub ✅ Fork Detection - Find abandoned or active forks ✅ Intelligent Matching - Multi-factor similarity algorithm ✅ Rate Limit Handling - Built-in rate limit management ✅ Semantic Analysis - Optional deep learning-based description matching ✅ Caching - Efficient caching to reduce API calls ✅ High Performance - Concurrent API requests with retry logic ✅ Security - Input validation and secure token handling

pip install repo-duplicate-detector

from repo_duplicate_detector import RepoMatcher

# Initialize
matcher = RepoMatcher(github_token="your_github_token")

# Find similar repositories
similar_repos = matcher.find_similar_repos("facebook/react")

for match in similar_repos:
    print(f"{match.repo2['full_name']}: {match.similarity.overall_score:.2%}")

Set your GitHub token as environment variable:

export GITHUB_TOKEN="ghp_your_token_here"

Or pass it directly:

from repo_duplicate_detector import RepoMatcher
from repo_duplicate_detector.config import Config

config = Config(github_token="ghp_your_token")
matcher = RepoMatcher(config=config)

Main class for finding duplicates and analyzing repositories.

find_similar_repos(repo, language=None, threshold=None, max_results=None)

Find repositories similar to a given repository.

matches = matcher.find_similar_repos(
    repo="facebook/react",
    language="javascript",
    threshold=0.7,
    max_results=20
)

for match in matches:
    print(match)
    print(match.to_dict())

find_duplicates_in_list(repos, threshold=None)

Find duplicates within a list of repositories.

duplicates = matcher.find_duplicates_in_list

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