Source: https://seerepo.com/compare/apereo/cas/vs/spring-projects/spring-boot
Markdown source: https://seerepo.com/compare/apereo/cas/vs/spring-projects/spring-boot.md
Description: cas and spring-boot share 34 technologies: Spring, H2 Database, lettuce-core, MongoDB, spring-jms, com.hazelcast:hazelcast, com.zaxxer:HikariCP, org.apache.tomcat.embed:tomcat-embed-websocket, Spring Boot, tomcat-embed-core, tomcat-embed-el, jakarta.servlet:jakarta.servlet-api, org.springframework.data:spring-data-commons, spring-data-cassandra, spring-data-mongodb, jakarta.persistence:jakarta.persistence-api, spring-session-data-redis, spring-session-jdbc, angus-mail, groovy-templates, Thymeleaf, com.sendgrid:sendgrid-java, com.samskivert:jmustache, jul-to-slf4j, micrometer-jakarta9, micrometer-tracing-bridge-brave, micrometer-tracing-bridge-otel, zipkin-reporter-brave, org.slf4j:slf4j-api, org.apache.logging.log4j:log4j-core, io.micrometer:micrometer-core, org.apache.logging.log4j:log4j-api, io.micrometer:micrometer-observation, and OpenTelemetry. Both are written in Java.

# cas vs spring-boot

cas and spring-boot share 34 technologies: Spring, H2 Database, lettuce-core, MongoDB, spring-jms, com.hazelcast:hazelcast, com.zaxxer:HikariCP, org.apache.tomcat.embed:tomcat-embed-websocket, Spring Boot, tomcat-embed-core, tomcat-embed-el, jakarta.servlet:jakarta.servlet-api, org.springframework.data:spring-data-commons, spring-data-cassandra, spring-data-mongodb, jakarta.persistence:jakarta.persistence-api, spring-session-data-redis, spring-session-jdbc, angus-mail, groovy-templates, Thymeleaf, com.sendgrid:sendgrid-java, com.samskivert:jmustache, jul-to-slf4j, micrometer-jakarta9, micrometer-tracing-bridge-brave, micrometer-tracing-bridge-otel, zipkin-reporter-brave, org.slf4j:slf4j-api, org.apache.logging.log4j:log4j-core, io.micrometer:micrometer-core, org.apache.logging.log4j:log4j-api, io.micrometer:micrometer-observation, and OpenTelemetry. Both are written in Java.

- [apereo/cas](https://seerepo.com/r/apereo/cas): Apereo CAS - Identity & Single Sign On for all earthlings and beyond.
- [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: Spring, H2 Database, lettuce-core, MongoDB, spring-jms, com.hazelcast:hazelcast, com.zaxxer:HikariCP, org.apache.tomcat.embed:tomcat-embed-websocket, Spring Boot, tomcat-embed-core, tomcat-embed-el, jakarta.servlet:jakarta.servlet-api, org.springframework.data:spring-data-commons, spring-data-cassandra, spring-data-mongodb, jakarta.persistence:jakarta.persistence-api, spring-session-data-redis, spring-session-jdbc, angus-mail, groovy-templates, Thymeleaf, com.sendgrid:sendgrid-java, com.samskivert:jmustache, jul-to-slf4j, micrometer-jakarta9, micrometer-tracing-bridge-brave, micrometer-tracing-bridge-otel, zipkin-reporter-brave, org.slf4j:slf4j-api, org.apache.logging.log4j:log4j-core, io.micrometer:micrometer-core, org.apache.logging.log4j:log4j-api, io.micrometer:micrometer-observation, OpenTelemetry
- Only in cas: apache-client, com.mysql:mysql-connector-j, curator-client, curator-recipes, hsqldb, jakarta.jms-api, jtds, kafka-clients, MariaDB, ojdbc11, org.springframework.boot:spring-boot-jdbc, PostgreSQL, pyzmq, s3, spring-boot-cache, spring-boot-starter-data-mongodb, com.github.ben-manes.caffeine:caffeine, software.amazon.awssdk:dynamodb, org.springframework.kafka:spring-kafka, org.apache.cassandra:java-driver-core, etcd, org.apache.pulsar:pulsar-client-api, org.springframework.amqp:spring-rabbit, com.microsoft.sqlserver:mssql-jdbc, MySQL, org.apache.curator:curator-framework, Postgres, software.amazon.awssdk:sqs, Flask, graal-sdk, jetty-http2-server, org.thymeleaf:thymeleaf-spring6, polyglot, spring-boot-integration, spring-boot-starter-thymeleaf, spring-cloud-bus, spring-cloud-config-client, spring-cloud-config-server, werkzeug, org.eclipse.jetty:jetty-alpn-java-server, Normalize.css, Hibernate, hibernate-hikaricp, itsdangerous, jose4j, nimbus-jose-jwt, oauth2-oidc-sdk, spring-boot-session, spring-boot-session-data-redis, spring-boot-session-jdbc, org.springframework.security:spring-security-cas, org.pac4j:pac4j-core, org.pac4j:pac4j-oidc, software.amazon.awssdk:secretsmanager, com.microsoft.azure:msal4j, com.azure:azure-identity, software.amazon.awssdk:sts, org.springframework.ai:spring-ai-starter-mcp-server-webmvc, jakarta.mail, jdom2, jinja2, jsoup, markupsafe, org.springframework.boot:spring-boot-starter-mail, org.apache.velocity:velocity-engine-core, com.google.zxing:core, commons-validator, org.hibernate.validator:hibernate-validator, org.springframework.boot:spring-boot-starter-validation, jakarta.validation:jakarta.validation-api, cloudwatchlogs, log4j-jcl, log4j-layout-template-json, logback-access-common, logback-classic, metrics-core, micrometer-java21, micrometer-registry-cloudwatch2, micrometer-registry-elastic, micrometer-registry-influx, micrometer-registry-otlp, micrometer-registry-prometheus, org.springframework.boot:spring-boot-starter-actuator, spring-boot-admin-starter-client, spring-boot-admin-starter-server, spring-boot-starter-jetty, spring-boot-starter-log4j2, spring-cloud-starter-consul-discovery, spring-cloud-starter-netflix-eureka-client, spring-cloud-starter-zookeeper-discovery, software.amazon.awssdk:ssm, ch.qos.logback:logback-core, software.amazon.awssdk:cloudwatch
- Only in spring-boot: JAX-RS, Liquibase, r2dbc-postgresql, spring-amqp-client, spring-data-ldap, spring-kafka, spring-r2dbc, spring-rabbit, spring-rabbitmq-client, io.r2dbc:r2dbc-spi, jakarta.jms:jakarta.jms-api, Neo4j, 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, grpc-services, jersey-container-servlet, jersey-media-json-jackson, jersey-spring6, jetty-ee11-websocket-jetty-server, org.jetbrains.kotlin:kotlin-stdlib-jdk8, servlet-api, spring-data-rest-webmvc, spring-graphql, org.springframework.grpc:spring-grpc-core, org.glassfish.jersey.core:jersey-server, org.eclipse.jetty.ee11:jetty-ee11-webapp, org.eclipse.jetty.ee11.websocket:jetty-ee11-websocket-jakarta-server, org.eclipse.jetty.compression:jetty-compression-gzip, org.eclipse.jetty.compression:jetty-compression-server, org.springframework.hateoas:spring-hateoas, spring-data-couchbase, spring-data-elasticsearch, spring-data-jpa, spring-data-neo4j, spring-data-r2dbc, org.jooq:jooq, org.hibernate.orm:hibernate-core, spring-security-oauth2-authorization-server, spring-security-oauth2-client, spring-security-saml2-service-provider, org.springframework.security:spring-security-crypto, jakarta.mail:jakarta.mail-api, org.freemarker:freemarker, org.glassfish.jersey.ext:jersey-bean-validation, slf4j-simple, ch.qos.logback:logback-classic, io.micrometer:micrometer-tracing, io.micrometer:micrometer-registry-otlp, io.opentelemetry.instrumentation:opentelemetry-logback-appender-1.0

## Side by side

| | cas | spring-boot |
|---|---|---|
| Size | 727,274 lines written, 5,293 code files | 759,739 lines written, 4,267 code files |
| Who writes it | 0% of its commits signed by AI. With GitHub Copilot | 0% of its commits signed by AI. With Claude Code |
| Activity | Last push November 12, 2026, 31,593 commits, 11,395 stars | Last push November 12, 2026, 42,555 commits, 81,902 stars |
| Tests | 3,193 test files. 48.4% 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, cas or spring-boot?

spring-boot, with 759,739 lines written; cas has 727,274.

The proof: [spring-projects/spring-boot's code at commit 4fac8e8](https://github.com/spring-projects/spring-boot/tree/4fac8e8693ccfa4c06b1b098e64ba844936106dd)

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

spring-boot, with 81,902 stars; cas has 11,395.

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

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

spring-boot, with 4,558 test files; cas has 3,193.

The proof: [spring-projects/spring-boot's code at commit 4fac8e8](https://github.com/spring-projects/spring-boot/tree/4fac8e8693ccfa4c06b1b098e64ba844936106dd)

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

Both got their last push on November 12, 2026.

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

## Sources

- apereo/cas: Read on November 12, 2026, at commit 990ad16 (https://github.com/apereo/cas/tree/990ad1606dac46925463de45758cd3373efa997e)
- spring-projects/spring-boot: Read on November 12, 2026, at commit 4fac8e8 (https://github.com/spring-projects/spring-boot/tree/4fac8e8693ccfa4c06b1b098e64ba844936106dd)

## 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.