Source: https://seerepo.com/compare/opensearch-project/OpenSearch/vs/spring-projects/spring-boot
Markdown source: https://seerepo.com/compare/opensearch-project/OpenSearch/vs/spring-projects/spring-boot.md
Description: OpenSearch and spring-boot share 8 technologies: JAX-RS, grpc-services, servlet-api, org.apache.logging.log4j:log4j-api, OpenTelemetry, org.apache.logging.log4j:log4j-core, io.opentelemetry:opentelemetry-sdk, and io.opentelemetry:opentelemetry-exporter-otlp. Both are written in Java.

# OpenSearch vs spring-boot

OpenSearch and spring-boot share 8 technologies: JAX-RS, grpc-services, servlet-api, org.apache.logging.log4j:log4j-api, OpenTelemetry, org.apache.logging.log4j:log4j-core, io.opentelemetry:opentelemetry-sdk, and io.opentelemetry:opentelemetry-exporter-otlp. Both are written in Java.

- [opensearch-project/OpenSearch](https://seerepo.com/r/opensearch-project/OpenSearch): 🔎 Open source distributed and RESTful search engine.
- [spring-projects/spring-boot](https://seerepo.com/r/spring-projects/spring-boot): Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.

## What they share and what sets them apart

- In common: JAX-RS, grpc-services, servlet-api, org.apache.logging.log4j:log4j-api, OpenTelemetry, org.apache.logging.log4j:log4j-core, io.opentelemetry:opentelemetry-sdk, io.opentelemetry:opentelemetry-exporter-otlp
- Only in OpenSearch: apache-client, arrow-c-data, arrow-memory-netty-buffer-patch, avro, aws-crt-client, aws-json-protocol, kafka-clients, lucene-memory, org.apache.arrow:flight-core, s3, datafusion, Apache, object_store, arrow, software.amazon.awssdk:sdk-core, org.apache.hadoop:hadoop-client-api, org.apache.calcite.avatica:avatica-core, datafusion-datasource, com.azure:azure-storage-blob, software.amazon.awssdk:kms, org.apache.hadoop:hadoop-hdfs, org.ehcache:ehcache, foyer, JetBrains, Tokio, joou-java-6, com.google.auth:google-auth-library-oauth2-http, google-oauth-client, msal4j, nimbus-jose-jwt, oauth2-oidc-sdk, software.amazon.awssdk:auth, software.amazon.awssdk:sts, com.azure:azure-identity, compiler, jdom2, jsoup, mail, org.apache.james:apache-mime4j-dom, pdfbox-io, poi, poi-ooxml, poi-ooxml-lite, poi-scratchpad, tika-parsers, parquet, org.apache.tika:tika-core, org.apache.pdfbox:pdfbox, json-schema-validator, commons-logging, io.opentelemetry:opentelemetry-sdk-common, log4j-1.2-api, log4j-slf4j-impl, slf4j-api, log, software.amazon.awssdk:regions, software.amazon.awssdk:ec2, io.opentelemetry:opentelemetry-exporter-logging, io.opentelemetry.semconv:opentelemetry-semconv
- Only in spring-boot: org.springframework.boot:spring-boot-starter-web, H2 Database, lettuce-core, Liquibase, MongoDB, org.apache.artemis:artemis-jakarta-client, org.springframework:spring-messaging, r2dbc-postgresql, spring-amqp-client, spring-data-ldap, spring-jms, spring-kafka, spring-r2dbc, spring-rabbit, spring-rabbitmq-client, io.r2dbc:r2dbc-spi, jakarta.jms:jakarta.jms-api, Neo4j, com.zaxxer:HikariCP, com.hazelcast:hazelcast, org.apache.activemq:activemq-client, Couchbase, Flyway, org.springframework.pulsar:spring-pulsar, org.springframework.ldap:spring-ldap-core, io.r2dbc:r2dbc-pool, org.apache.qpid:protonj2-client, jersey-container-servlet, jersey-media-json-jackson, jersey-spring6, jetty-ee11-websocket-jetty-server, org.apache.tomcat.embed:tomcat-embed-websocket, org.jetbrains.kotlin:kotlin-stdlib-jdk8, Spring Boot, spring-data-rest-webmvc, spring-graphql, tomcat-embed-core, tomcat-embed-el, Spring, jakarta.servlet:jakarta.servlet-api, org.springframework.grpc:spring-grpc-core, org.glassfish.jersey.core:jersey-server, org.eclipse.jetty.ee11:jetty-ee11-webapp, org.springframework.ws:spring-ws-core, org.springframework.integration:spring-integration-core, org.eclipse.jetty.ee11.websocket:jetty-ee11-websocket-jakarta-server, Thymeleaf, org.eclipse.jetty.compression:jetty-compression-gzip, org.eclipse.jetty.compression:jetty-compression-server, org.springframework.hateoas:spring-hateoas, org.springframework.data:spring-data-commons, spring-data-cassandra, spring-data-couchbase, spring-data-elasticsearch, spring-data-jpa, spring-data-mongodb, spring-data-neo4j, spring-data-r2dbc, org.jooq:jooq, jakarta.persistence:jakarta.persistence-api, org.hibernate.orm:hibernate-core, org.springframework.security:spring-security-crypto, spring-security-oauth2-authorization-server, spring-security-oauth2-client, spring-security-saml2-service-provider, spring-session-data-redis, spring-session-jdbc, org.springframework.session:spring-session-core, angus-mail, groovy-templates, com.samskivert:jmustache, jakarta.mail:jakarta.mail-api, com.sendgrid:sendgrid-java, org.freemarker:freemarker, org.glassfish.jersey.ext:jersey-bean-validation, Hibernate, jul-to-slf4j, micrometer-jakarta9, micrometer-tracing-bridge-brave, micrometer-tracing-bridge-otel, org.apache.logging.log4j:log4j-slf4j2-impl, slf4j-simple, zipkin-reporter-brave, io.micrometer:micrometer-core, io.micrometer:micrometer-observation, ch.qos.logback:logback-classic, io.micrometer:micrometer-tracing, org.slf4j:slf4j-api, io.micrometer:micrometer-registry-otlp, io.opentelemetry.instrumentation:opentelemetry-logback-appender-1.0, org.apache.logging.log4j:log4j-jul

## Side by side

| | OpenSearch | spring-boot |
|---|---|---|
| Size | 3,021,895 lines written, 8,159 code files | 759,628 lines written, 4,267 code files |
| Who writes it | 0% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, and CodeRabbit | 0% of its commits signed by AI. With Claude Code |
| Activity | Last push November 9, 2026, 57,216 commits, 13,983 stars | Last push November 9, 2026, 42,460 commits, 81,789 stars |
| Tests | 5,508 test files. 65.6% of its code files have a test that imports them | 4,558 test files. 55.8% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, OpenSearch or spring-boot?

OpenSearch, with 3,021,895 lines written; spring-boot has 759,628.

The proof: [opensearch-project/OpenSearch's code at commit 2923a00](https://github.com/opensearch-project/OpenSearch/tree/2923a00aa3758b357462dc85dc85ebe3e834e37d)

### Which has more GitHub stars, OpenSearch or spring-boot?

spring-boot, with 81,789 stars; OpenSearch has 13,983.

The proof: [spring-projects/spring-boot on GitHub](https://github.com/spring-projects/spring-boot)

### Which has more tests, OpenSearch or spring-boot?

OpenSearch, with 5,508 test files; spring-boot has 4,558.

The proof: [opensearch-project/OpenSearch's code at commit 2923a00](https://github.com/opensearch-project/OpenSearch/tree/2923a00aa3758b357462dc85dc85ebe3e834e37d)

### Which was updated more recently, OpenSearch or spring-boot?

Both got their last push on November 9, 2026.

The proof: [spring-projects/spring-boot's commits on GitHub](https://github.com/spring-projects/spring-boot/commits)

## Sources

- opensearch-project/OpenSearch: Read on November 9, 2026, at commit 2923a00 (https://github.com/opensearch-project/OpenSearch/tree/2923a00aa3758b357462dc85dc85ebe3e834e37d)
- spring-projects/spring-boot: Read on November 9, 2026, at commit bafb112 (https://github.com/spring-projects/spring-boot/tree/bafb11263aca6686585eb654f9129dc3ee4e6482)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.