Source: https://seerepo.com/compare/alibaba/nacos/vs/apereo/cas
Markdown source: https://seerepo.com/compare/alibaba/nacos/vs/apereo/cas.md
Description: nacos and cas share 17 technologies: com.mysql:mysql-connector-j, H2 Database, PostgreSQL, com.zaxxer:HikariCP, MySQL, Postgres, com.github.ben-manes.caffeine:caffeine, Spring Boot, nimbus-jose-jwt, oauth2-oidc-sdk, jul-to-slf4j, micrometer-registry-prometheus, org.springframework.boot:spring-boot-starter-actuator, org.slf4j:slf4j-api, io.micrometer:micrometer-core, org.apache.logging.log4j:log4j-core, and ch.qos.logback:logback-core. Both are written in Java.

# nacos vs cas

nacos and cas share 17 technologies: com.mysql:mysql-connector-j, H2 Database, PostgreSQL, com.zaxxer:HikariCP, MySQL, Postgres, com.github.ben-manes.caffeine:caffeine, Spring Boot, nimbus-jose-jwt, oauth2-oidc-sdk, jul-to-slf4j, micrometer-registry-prometheus, org.springframework.boot:spring-boot-starter-actuator, org.slf4j:slf4j-api, io.micrometer:micrometer-core, org.apache.logging.log4j:log4j-core, and ch.qos.logback:logback-core. Both are written in Java.

- [alibaba/nacos](https://seerepo.com/r/alibaba/nacos): an easy-to-use dynamic service discovery, configuration and service management platform for building AI cloud native applications.
- [apereo/cas](https://seerepo.com/r/apereo/cas): Apereo CAS - Identity & Single Sign On for all earthlings and beyond.

## What they share and what sets them apart

- In common: com.mysql:mysql-connector-j, H2 Database, PostgreSQL, com.zaxxer:HikariCP, MySQL, Postgres, com.github.ben-manes.caffeine:caffeine, Spring Boot, nimbus-jose-jwt, oauth2-oidc-sdk, jul-to-slf4j, micrometer-registry-prometheus, org.springframework.boot:spring-boot-starter-actuator, org.slf4j:slf4j-api, io.micrometer:micrometer-core, org.apache.logging.log4j:log4j-core, ch.qos.logback:logback-core
- Only in nacos: org.springframework.boot:spring-boot-starter-web, ojdbc8, org.apache.derby:derbyshared, org.springframework.boot:spring-boot-starter-jdbc, RocksDB, org.apache.derby:derby, org.apache.tomcat.embed:tomcat-embed-core, Vite, React, react-router-dom, React Router, jjwt-api, jjwt-impl, jjwt-jackson, org.springframework.boot:spring-boot-starter-security, Model Context Protocol, com.networknt:json-schema-validator, commons-logging, jcl-over-slf4j, log4j-over-slf4j, log4j-slf4j-impl, micrometer-bom, ch.qos.logback:logback-classic, Apache, Tailwind CSS, class-variance-authority, tailwind-merge, sonner, Radix UI, monaco-editor, @uiw/react-md-editor, Lucide, react-markdown, remark-gfm, remark-frontmatter, js-yaml, react-icons, prop-types
- Only in cas: Spring, apache-client, curator-client, curator-recipes, hsqldb, jakarta.jms-api, jtds, kafka-clients, lettuce-core, MariaDB, MongoDB, ojdbc11, org.springframework.boot:spring-boot-jdbc, pyzmq, s3, spring-boot-cache, spring-boot-starter-data-mongodb, spring-jms, software.amazon.awssdk:dynamodb, com.hazelcast:hazelcast, 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, org.apache.curator:curator-framework, software.amazon.awssdk:sqs, Flask, graal-sdk, jetty-http2-server, org.apache.tomcat.embed:tomcat-embed-websocket, org.thymeleaf:thymeleaf-spring6, polyglot, spring-boot-integration, spring-boot-starter-thymeleaf, spring-cloud-bus, spring-cloud-config-client, spring-cloud-config-server, tomcat-embed-core, tomcat-embed-el, werkzeug, jakarta.servlet:jakarta.servlet-api, org.eclipse.jetty:jetty-alpn-java-server, Normalize.css, Hibernate, hibernate-hikaricp, org.springframework.data:spring-data-commons, spring-data-cassandra, spring-data-mongodb, jakarta.persistence:jakarta.persistence-api, itsdangerous, jose4j, spring-boot-session, spring-boot-session-data-redis, spring-boot-session-jdbc, spring-session-data-redis, spring-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, angus-mail, groovy-templates, jakarta.mail, jdom2, jinja2, jsoup, markupsafe, org.springframework.boot:spring-boot-starter-mail, org.apache.velocity:velocity-engine-core, Thymeleaf, com.google.zxing:core, com.sendgrid:sendgrid-java, com.samskivert:jmustache, 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-jakarta9, micrometer-java21, micrometer-registry-cloudwatch2, micrometer-registry-elastic, micrometer-registry-influx, micrometer-registry-otlp, micrometer-tracing-bridge-brave, micrometer-tracing-bridge-otel, 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, zipkin-reporter-brave, org.apache.logging.log4j:log4j-api, software.amazon.awssdk:ssm, io.micrometer:micrometer-observation, OpenTelemetry, software.amazon.awssdk:cloudwatch

## Side by side

| | nacos | cas |
|---|---|---|
| Size | 937,868 lines written, 3,424 code files | 727,274 lines written, 5,293 code files |
| Who writes it | 4.3% of its commits signed by AI. With Claude Code, Cursor, and GitHub Copilot | 0% of its commits signed by AI. With GitHub Copilot |
| Activity | Last push November 5, 2026, 5,254 commits, 33,500 stars | Last push November 12, 2026, 31,593 commits, 11,395 stars |
| Tests | 2,395 test files. 82.4% of its code files have a test that imports them | 3,193 test files. 48.4% 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, nacos or cas?

nacos, with 937,868 lines written; cas has 727,274.

The proof: [alibaba/nacos's code at commit 815779b](https://github.com/alibaba/nacos/tree/815779bcb90f131b0b6d471fdd1d6fae9b5276be)

### Which has more GitHub stars, nacos or cas?

nacos, with 33,500 stars; cas has 11,395.

The proof: [alibaba/nacos on GitHub](https://github.com/alibaba/nacos)

### Which has more tests, nacos or cas?

cas, with 3,193 test files; nacos has 2,395.

The proof: [apereo/cas's code at commit 990ad16](https://github.com/apereo/cas/tree/990ad1606dac46925463de45758cd3373efa997e)

### Which was updated more recently, nacos or cas?

cas: its last push was on November 12, 2026, and nacos's on November 5, 2026.

The proof: [apereo/cas's commits on GitHub](https://github.com/apereo/cas/commits)

### Which has more commits signed by AI, nacos or cas?

nacos: an AI signed 4.3% of its commits, with Claude Code, Cursor, and GitHub Copilot.

The proof: [the commits each tool signed in alibaba/nacos](https://seerepo.com/r/alibaba/nacos/ai)

## Sources

- alibaba/nacos: Read on November 7, 2026, at commit 815779b (https://github.com/alibaba/nacos/tree/815779bcb90f131b0b6d471fdd1d6fae9b5276be)
- apereo/cas: Read on November 12, 2026, at commit 990ad16 (https://github.com/apereo/cas/tree/990ad1606dac46925463de45758cd3373efa997e)

## 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.