Top 10 Java Data Science Projects

OpenRefine

45 10,448 9.7 Java

OpenRefine is a free, open source power tool for working with messy data and improving it

Project mention: Ask HN: What Underrated Open Source Project Deserves More Recognition? | news.ycombinator.com | 2024-03-07

"OpenRefine is a powerful free, open source tool for working with messy data: cleaning it; transforming it from one format into another; and extending it with web services and external data." https://openrefine.org/
Trino

44 9,519 10.0 Java

Official repository of Trino, the distributed SQL query engine for big data, formerly known as PrestoSQL (https://trino.io)

Project mention: Trino: Fast distributed SQL query engine for big data analytics | news.ycombinator.com | 2024-03-19
WorkOS

workos.com
sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
Smile

9 5,914 9.0 Java

Statistical Machine Intelligence & Learning Engine

Project mention: The Current State of Clojure's Machine Learning Ecosystem | news.ycombinator.com | 2024-04-07

> I don't think it's right to recommend that new users move away from the package because of licensing issues
I was going to chime in to agree but then I saw how this was done - a completely innocuous looking commit:
https://github.com/haifengl/smile/commit/6f22097b233a3436519...
And literally no mention in the release notes:
https://github.com/haifengl/smile/releases/tag/v3.0.0
I think if you are going to change license especially in a way that makes it less permissive you need to be super open and clear about both the fact you are doing it and your reasons for that. This is done so silently as to look like it is intentionally trying to mislead and trick people.
So maybe I wouldn't say to move away because of the specific license, but it's legitimate to avoid something when it's so clearly driven by a single entity and that entity acts in a way that isn't trustworthy.
Tablesaw

4 3,436 4.8 Java

Java dataframe and visualization library
odd-platform

33 1,104 8.8 Java

First open-source data discovery and observability platform. We make a life for data practitioners easy so you can focus on your business.

Project mention: OpenDataDiscovery 0.15 with Data Deprecation and Metadata Stale | news.ycombinator.com | 2023-08-04
DatumBox

0 1,087 3.2 Java

Datumbox is an open-source Machine Learning framework written in Java which allows the rapid development of Machine Learning and Statistical applications.
hopsworks

4 1,067 9.3 Java

Hopsworks - Data-Intensive AI platform with a Feature Store
InfluxDB

www.influxdata.com
sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
zingg

23 875 9.3 Java

Scalable identity resolution, entity resolution, data mastering and deduplication using ML
rumble

1 207 8.5 Java

⛈️ RumbleDB 1.21.0 "Hawthorn blossom" 🌳 for Apache Spark | Run queries on your large-scale, messy JSON-like data (JSON, text, CSV, Parquet, ROOT, AVRO, SVM...) | No install required (just a jar to download) | Declarative Machine Learning and more (by RumbleDB)
Data-Engineering-Roadmap

1 117 5.4 Java

Roadmap for Data Engineering

Project mention: Pitanje za data engineering? | /r/programiranje | 2023-06-30

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2024-04-07.