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OpenSrc
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Data Science open-source projects

OpenSrc lists 81 repositories about Data Science with open issues for new contributors, and 44 of them are first-PR friendly. Between them they have 1,749 open good first issues and 1,112 help-wanted issues. The median welcome score is 75/100, and the best-scored right now are apache/airflow, jupyterlab/jupyterlab and github-linguist/linguist. Most are written in Python, Java and C++. Many also touch Machine Learning & AI and Databases.

81 repos by best score

Filter these in the directory

  • apache/airflow

    Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

    135good first issues
    • Python
    • Field: Data Science
    • Field: Machine Learning
    • Stars:47K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~48m
    Score98 out of 100 contributor score, very welcomingFirst-PR friendly

  • jupyterlab/jupyterlab

    JupyterLab computational environment.

    16good first issues+54 help wanted
    • TypeScript
    • Field: Data Science
    • Stars:15.3K
    • BSD-3-Clause
    • CONTRIBUTING
    • replies in ~10h
    Score94 out of 100 contributor score, very welcomingFirst-PR friendly

  • github-linguist/linguist

    Language Savant. If your repository's language is being reported incorrectly, send us a pull request!

    141good first issues+1 help wanted
    • Ruby
    • Field: Data Science
    • Stars:13.7K
    • MIT
    • CONTRIBUTING
    • replies in ~3h
    Score93 out of 100 contributor score, very welcomingFirst-PR friendly

  • stdlib-js/stdlib

    ✨ The fundamental numerical library for JavaScript and TypeScript. ✨                   ⭐️ Star to support…

    128good first issues+31 help wanted
    • JavaScript
    • Field: Scientific Computing
    • Field: Data Science
    • Stars:6K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2d
    Score93 out of 100 contributor score, very welcomingFirst-PR friendly

  • MakieOrg/Makie.jl

    Interactive data visualizations and plotting in Julia

    19good first issues+3 help wanted
    • Julia
    • Field: Graphics
    • Field: Data Science
    • Stars:2.8K
    • MIT
    • CONTRIBUTING
    • replies in ~7h
    Score92 out of 100 contributor score, very welcomingFirst-PR friendly

  • JuliaPluto/Pluto.jl

    🎈 Simple reactive notebooks for Julia

    30good first issues
    • JavaScript
    • Field: Data Science
    • Stars:5.4K
    • MIT
    • CONTRIBUTING
    • replies in ~5h
    Score91 out of 100 contributor score, very welcomingFirst-PR friendly

  • ray-project/ray

    Ray is an AI compute engine. Ray consists of a core distributed runtime and a set of AI Libraries for…

    72good first issues+15 help wanted
    • Python
    • Field: Machine Learning
    • Field: Data Science
    • Stars:43.9K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~5h
    Score90 out of 100 contributor score, very welcomingFirst-PR friendly

  • trinodb/trino

    Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL…

    41good first issues
    • Java
    • Field: Databases
    • Field: Data Science
    • Stars:13.3K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~1h
    Score89 out of 100 contributor score, very welcomingFirst-PR friendly

  • lakehq/sail

    Drop-in Apache Spark replacement written in Rust, unifying batch processing, stream processing, and…

    19good first issues+34 help wanted
    • Rust
    • Field: Machine Learning
    • Field: Databases
    • Stars:3.4K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~27h
    Score89 out of 100 contributor score, very welcomingFirst-PR friendly

  • grafana/grafana

    The open and composable observability and data visualization platform. Visualize metrics, logs, and traces…

    21good first issues+13 help wanted
    • TypeScript
    • Field: Observability
    • Field: Data Science
    • Stars:77K
    • AGPL-3.0
    • CONTRIBUTING
    Score88 out of 100 contributor score, very welcomingFirst-PR friendly

  • marimo-team/marimo

    A reactive notebook for Python — run reproducible experiments, query with SQL, execute as a script, deploy as…

    4good first issues+15 help wanted
    • Python
    • Field: Data Science
    • Field: Machine Learning
    • Stars:22.9K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~8h
    Score88 out of 100 contributor score, very welcomingFirst-PR friendly

  • paradedb/paradedb

    One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the…

    22good first issues
    • Rust
    • Field: Databases
    • Field: Data Science
    • Stars:9.3K
    • AGPL-3.0
    • CONTRIBUTING
    • replies in ~31h
    Score87 out of 100 contributor score, very welcomingFirst-PR friendly

  • serenedb/serenedb

    The First Real-Time Search Analytics Database

    46good first issues
    • C++
    • Field: Databases
    • Field: Data Science
    • Stars:844
    • Apache-2.0
    • CONTRIBUTING
    Score87 out of 100 contributor score, very welcomingFirst-PR friendly

  • kestra-io/kestra

    Event Driven Orchestration & Scheduling Platform for Mission Critical Applications

    46good first issues
    • Java
    • Field: DevOps
    • Field: Data Science
    • Stars:28.5K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~14h
    Score86 out of 100 contributor score, very welcomingFirst-PR friendly

  • risingwavelabs/risingwave

    Event streaming platform for agentic AI. Continuously ingest, transform, and serve event streams in real…

    51good first issues
    • Rust
    • Field: Databases
    • Field: Data Science
    • Stars:9.4K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2d
    Score86 out of 100 contributor score, very welcomingFirst-PR friendly

  • NVIDIA/cudf

    cuDF - GPU DataFrame Library

    31good first issues
    • C++
    • Field: Data Science
    • Field: Graphics
    • Stars:9.8K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2d
    Score85 out of 100 contributor score, very welcomingFirst-PR friendly

  • apache/datafusion

    Apache DataFusion SQL Query Engine

    25good first issues+14 help wanted
    • Rust
    • Field: Databases
    • Field: Data Science
    • Stars:9.4K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~12h
    Score85 out of 100 contributor score, very welcomingFirst-PR friendly

  • gchq/CyberChef

    The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis

    3good first issues+54 help wanted
    • JavaScript
    • Field: Data Science
    • Field: Security
    • Stars:36K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2d
    Score84 out of 100 contributor score, very welcomingFirst-PR friendly

  • plotly/plotly.js

    Open-source JavaScript charting library behind Plotly and Dash

    7good first issues
    • JavaScript
    • Field: Data Science
    • Field: Graphics
    • Stars:18.3K
    • MIT
    • CONTRIBUTING
    • replies in ~22h
    Score84 out of 100 contributor score, very welcomingFirst-PR friendly

  • scikit-learn/scikit-learn

    scikit-learn: machine learning in Python

    1good first issue+178 help wanted
    • Python
    • Field: Data Science
    • Field: Machine Learning
    • Stars:67.4K
    • BSD-3-Clause
    • CONTRIBUTING
    • replies in ~2d
    Score82 out of 100 contributor score, very welcoming

  • PostHog/posthog

    :hedgehog: PostHog is the leading platform for building self-driving products. Our developer tools – AI…

    8good first issues
    • Python
    • Field: Data Science
    • Field: Machine Learning
    • Stars:40K
    • CONTRIBUTING
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly

  • lance-format/lance

    Open Lakehouse Format for Multimodal AI. Convert from Parquet in 2 lines of code for 100x faster random…

    31good first issues+17 help wanted
    • Rust
    • Field: Machine Learning
    • Field: Data Science
    • Stars:7.1K
    • Apache-2.0
    • CONTRIBUTING
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly

  • traceroot-ai/traceroot

    TraceRoot - open source self improving layer for ai agents YC S25

    36good first issues+32 help wanted
    • TypeScript
    • Field: Observability
    • Field: Machine Learning
    • Stars:786
    • CONTRIBUTING
    Score82 out of 100 contributor score, very welcomingFirst-PR friendly

  • vectordotdev/vector

    A high-performance observability data pipeline.

    23good first issues
    • Rust
    • Field: Observability
    • Field: Data Science
    • Stars:22.6K
    • MPL-2.0
    • CONTRIBUTING
    • replies in ~30d
    Score81 out of 100 contributor score, very welcoming

  • opensearch-project/OpenSearch

    🔎 Open source distributed and RESTful search engine.

    68good first issues+15 help wanted
    • Java
    • Field: Data Science
    • Stars:13.8K
    • Apache-2.0
    • CONTRIBUTING
    Score81 out of 100 contributor score, very welcomingFirst-PR friendly

  • metabase/metabase

    The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with…

    16good first issues
    • Clojure
    • Field: Databases
    • Field: Data Science
    • Stars:49.5K
    • CONTRIBUTING
    Score80 out of 100 contributor score, very welcomingFirst-PR friendly

  • sktime/pytorch-forecasting

    Time series forecasting with PyTorch

    16good first issues+2 help wanted
    • Python
    • Field: Machine Learning
    • Field: Data Science
    • Stars:5K
    • MIT
    • CONTRIBUTING
    • replies in ~6d
    Score80 out of 100 contributor score, very welcoming

  • questdb/questdb

    QuestDB is a high performance, open-source, time-series database

    19good first issues+10 help wanted
    • Java
    • Field: Databases
    • Field: Data Science
    • Stars:17.4K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~30d
    Score79 out of 100 contributor score, very welcoming

  • crate/crate

    CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near…

    4good first issues+24 help wanted
    • Java
    • Field: Databases
    • Field: Embedded
    • Stars:4.4K
    • Apache-2.0
    • CONTRIBUTING
    • replies in ~2d
    Score79 out of 100 contributor score, very welcomingFirst-PR friendly

  • visit-dav/visit

    VisIt - Visualization and Data Analysis for Mesh-based Scientific Data

    28good first issues
    • C
    • Field: Scientific Computing
    • Field: Data Science
    • Stars:532
    • BSD-3-Clause
    • CONTRIBUTING
    • replies in ~6d
    Score79 out of 100 contributor score, very welcoming

Showing 30 of 81 repos