Roadmap to becoming a Java developer in 2026
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Repository Index
47,133 repositories indexed
25–48 of 89 · Most stars
Distributed Peer-to-Peer Web Search Engine and Intranet Search Appliance
A Java architecture test library, to specify and assert architecture rules in plain Java
Library for configuration management API
Material Design Search Bar for Android
:elephant: Elasticsearch real-time search and analytics natively integrated with Hadoop
Elassandra = Elasticsearch + Apache Cassandra
- cassandra
- elasticsearch
- search
- completion
Apache Solr open-source search software
- lucene
- solr
- search
- nosql
🦎 A lightweight, streaming-native, multi-protocol gateway for AI, APIs, and real-time data. Route LLM requests across providers, govern MCP tools, and connect Kafka, MQTT, and HTTP through one high-performance engine with shared security and observability.
Libraries to help developers express architectural abstractions in Java code
- architecture
- java
- domain-driven-design
Retail banking sample application showcasing Kubernetes and Google Cloud
- samples
- kubernetes
- reference-architecture
- sample-app
An advanced, but easy to use, platform for writing functional applications in Java 8.
- functional-programming
- reactive-streams
- monoid
- streams
TranslatedA lightweight DDD forward/reverse business modeling framework that supports the architectural evolution of complex business systems!
- ddd
- extension
- ddd-architecture
- clean-architecture
Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.
- java
- elasticsearch
- full-text-search
- lucene
Floating hint from edit text - inspired by Matt D. Smith's design: http://dribbble.com/shots/1254439--GIF-Mobile-Form-Interaction?list=users
High Performance Primitive Collections for Java
Microserver is a Java 8 native, zero configuration, standards based, battle hardened library to run Java Rest Microservices via a standard Java main class. Supporting pure Microservice or Micro-monolith styles.
- microservices
- rest
- jersey
- spring
The repository host gives no description.
Neo4j Spatial is a library of utilities for Neo4j that faciliates the enabling of spatial operations on data. In particular you can add spatial indexes to already located data, and perform spatial operations on the data like searching for data within specified regions or within a specified distance of a point of interest.
- neo4j
- neo4j-database
- geoserver
- spatial-data
Microservices library - scalecube-services is a high throughput, low latency reactive microservices library built to scale. It features: API-Gateways, service-discovery, service-load-balancing, the architecture supports plug-and-play service communication modules and features. built to provide performance and low-latency real-time stream-processing
- microservices
- reactive-streams
- distributed-systems
- service-mesh
🔐 Tutorial of setting up Security for your API with one way authentication with TLS/SSL and mutual authentication for a java based web server and a client with both Spring Boot. Different clients are provided such as Apache HttpClient, OkHttp, Spring RestTemplate, Spring WebFlux WebClient Jetty and Netty, the old and the new JDK HttpClient, the old and the new Jersey Client, Google HttpClient, Unirest, Retrofit, Feign, Methanol, vertx, Scala client Finagle, Featherbed, Dispatch Reboot, AsyncHttpClient, Sttp, Akka, Requests Scala, Http4s Blaze, Kotlin client Fuel, http4k, Kohttp and ktor. Also other server examples are available such as jersey with grizzly. Also gRPC, WebSocket and ElasticSearch examples are included
- tls
- truststore
- certificate
- keystore
Event Sourcing and CQRS in practice.
- event-sourcing
- cqrs
- ddd
- domain-driven-design
Multitenant backend server for building web and mobile apps rapidly. The backend for busy developers. (self-hosted or hosted)
- backend
- api-server
- json-api
- baas
A flexible, partial, out-of-order and real-time typeahead search library