Best open source Java projects[017]

Elasticsearch

JAVA

Free and Open, Distributed, RESTful Search Engine

Keycloak

JAVA

Open Source Identity and Access Management For Modern Applications and Services

Kestra

JAVA

A powerful, open-source orchestrator for building, running, and monitoring complex data pipelines and workflows

Chat2DB

JAVA

AI-powered SQL client that converts natural language to SQL queries. Supports MySQL, Redis, MongoDB with Text2SQL, BI dashboards, and secure database management.

QuestDB

JAVA

The fastest open source time series database

SuperTokens

JAVA

Open source alternative to Auth0 / AWS Cognito / Firebase Auth

Logstash

JAVA

Logstash is a free and open server-side data processing pipeline that ingests data from multiple sources, transforms it, and sends it to your desired destination.

LanguageTool

JAVA

Check grammar, punctuation, and spelling errors instantly with AI-powered technology. Supports 30+ languages with browser extensions and desktop apps.

OpenSearch

JAVA

Community-driven, Apache 2.0-licensed search and analytics suite for ingesting, searching, visualizing, and analyzing data at scale with AI/ML capabilities.

AutoMQ

JAVA

AutoMQ is a serverless Kafka alternative built on S3 that offers 10x cost savings, easy scalability, and full Kafka compatibility.

OSMAnd

JAVA

Comprehensive offline navigation app with detailed maps, turn-by-turn guidance, and specialized routing for hiking, cycling, and walking worldwide.

CrateDB

JAVA

Distributed SQL database designed for high-speed ingestion and complex queries on massive datasets, ideal for IoT and time-series data.

Peergos

JAVA

A peer-to-peer encrypted filesystem for secure file storage, sharing, and collaboration with end-to-end encryption and user-controlled data.

XWiki

JAVA

XWiki is a flexible, feature-rich wiki software that helps organizations structure and share knowledge efficiently.

Structr

JAVA

Open-source low-code platform combining Neo4j graph database, visual schema editor, automatic REST APIs, and page rendering in one self-hosted environment.

ByteChef

JAVA

Create intelligent automation workflows combining AI agents with your favorite apps and services. Connect, automate, and scale your operations without complex coding.

Gravitee

JAVA

Full-lifecycle API management platform that unifies synchronous and asynchronous ecosystems. Manage APIs, event streams, and AI agents with enterprise security and 4x faster gateway performance.