1.OpenAPITools / openapi-generator
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
+781 stars
from 26,063 · score 6.66
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
14 repositories by Attention Score · May 7, 2026 – Nov 2, 2026 (UTC)
2.apache / camel
Apache Camel is an open source integration framework with 350+ connectors. Write routes in Java, YAML, or XML. Run on Spring Boot, Quarkus, or standalone. Apache License 2.0.
+227 stars
from 6,164 · score 5.43
3.discord-jda / JDA
Java wrapper for the popular chat & VOIP service: Discord https://discord.com
+93 stars
from 4,606 · score 4.54
4.springdoc / springdoc-openapi
Library for OpenAPI 3 with spring-boot
+66 stars
from 3,677 · score 4.20
5.rest-assured / rest-assured
Java DSL for easy testing of REST services
+63 stars
from 7,083 · score 4.16
6.DSpace / DSpace
(Official) The DSpace digital asset management system that powers your Institutional Repository
+50 stars
from 1,055 · score 3.93
7.confluentinc / schema-registry
Confluent Schema Registry for Kafka
+49 stars
from 2,422 · score 3.91
8.codelibs / fess
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.
+40 stars
from 1,102 · score 3.71
9.apache / linkis
Apache Linkis builds a computation middleware layer to facilitate connection, governance and orchestration between the upper applications and the underlying data engines.
+27 stars
from 3,389 · score 3.33
10.OpenIdentityPlatform / OpenDJ
OpenDJ is an open-source LDAP directory server written in Java. It provides robust, scalable, and secure directory services for identity management, access control, and authentication in enterprise environments. OpenDJ supports LDAPv3 standard, replication, REST APIs, and high-performance
+11 stars
from 432 · score 2.48
11.Erudika / para
Multitenant backend server for building web and mobile apps rapidly. The backend for busy developers. (self-hosted or hosted)
+8 stars
from 566 · score 2.20
12.restlet / restlet-framework-java
The first REST API framework for Java
+5 stars
from 662 · score 1.79
13.xnbox / DeepfakeHTTP
DeepfakeHTTP is a web server that uses HTTP dumps as a source for responses.
+5 stars
from 519 · score 1.79
14.mzivkovicdev / spring-crud-generator
Generate production-ready Spring Boot backend boilerplate from a single YAML or JSON spec.
+4 stars
from 35 · score 1.61