Source: https://seerepo.com/compare/open-metadata/OpenMetadata/vs/theonedev/onedev
Markdown source: https://seerepo.com/compare/open-metadata/OpenMetadata/vs/theonedev/onedev.md
Description: OpenMetadata and onedev share 9 technologies: JAX-RS, jersey-container-servlet, org.eclipse.jetty:jetty-server, Apache, jakarta.validation:jakarta.validation-api, Hibernate, org.slf4j:slf4j-api, ch.qos.logback:logback-classic, and ch.qos.logback:logback-core. Both are written in Java.

# OpenMetadata vs onedev

OpenMetadata and onedev share 9 technologies: JAX-RS, jersey-container-servlet, org.eclipse.jetty:jetty-server, Apache, jakarta.validation:jakarta.validation-api, Hibernate, org.slf4j:slf4j-api, ch.qos.logback:logback-classic, and ch.qos.logback:logback-core. Both are written in Java.

- [open-metadata/OpenMetadata](https://seerepo.com/r/open-metadata/OpenMetadata): The Open Context Layer for Data and AI ,  OpenMetadata is the open platform for building trusted data context and business semantics for humans, AI assistants, and agents.
- [theonedev/onedev](https://seerepo.com/r/theonedev/onedev): The Unified and Autonomous Development Platform

## What they share and what sets them apart

- In common: JAX-RS, jersey-container-servlet, org.eclipse.jetty:jetty-server, Apache, jakarta.validation:jakarta.validation-api, Hibernate, org.slf4j:slf4j-api, ch.qos.logback:logback-classic, ch.qos.logback:logback-core
- Only in OpenMetadata: React, Vite, Flask, org.glassfish.jersey.media:jersey-media-multipart, apache-client, com.mysql:mysql-connector-j, docker-java-transport-zerodep, elasticache, lettuce-core, org.flywaydb:flyway-mysql, PostgreSQL, redshift-jdbc42, s3, tomcat-jdbc, Redis, Postgres, com.zaxxer:HikariCP, Flyway, MySQL, com.azure:azure-storage-blob, net.jodah:expiringmap, software.amazon.awssdk:rds, Elasticsearch, Google, javax.ws.rs-api, jersey-media-json-jackson, jersey-server, jetty-bom, jetty-ee10-bom, jetty-ee10-servlets, org.springframework:spring-beans, jakarta.servlet:jakarta.servlet-api, io.dropwizard:dropwizard-core, Spring, org.eclipse.jetty.ee10:jetty-ee10-servlet, org.eclipse.jetty:jetty-http, org.eclipse.jetty:jetty-util, javax.servlet:javax.servlet-api, org.eclipse.jetty:jetty-io, Tailwind CSS, guicey-jdbi3, jdbi3-sqlobject, jsqlparser, org.jdbi:jdbi3-core, io.dropwizard:dropwizard-jdbi3, com.google.auth:google-auth-library-oauth2-http, google-oauth-client, java-jwt, nimbus-jose-jwt, oauth2-oidc-sdk, software.amazon.awssdk:auth, com.unboundid:unboundid-ldapsdk, com.azure:azure-identity, com.microsoft.azure:msal4j, org.passay:passay, software.amazon.awssdk:secretsmanager, software.amazon.awssdk:sts, Model Context Protocol, io.modelcontextprotocol.sdk:mcp-json-jackson2, angus-mail, commonmark-ext-autolink, commonmark-ext-gfm-strikethrough, commonmark-ext-gfm-tables, owasp-java-html-sanitizer, poi-ooxml, com.github.jknack:handlebars, org.commonmark:commonmark, org.freemarker:freemarker, com.opencsv:opencsv, com.vladsch.flexmark:flexmark-html2md-converter, org.apache.pdfbox:pdfbox, org.apache.poi:poi, org.jsoup:jsoup, org.simplejavamail:simple-java-mail, everit-json-schema, com.networknt:json-schema-validator, org.jsonschema2pojo:jsonschema2pojo-core, javax.validation:validation-api, log4j-core, metrics-core, micrometer-observation, micrometer-registry-prometheus, OpenTelemetry, Prometheus, slf4j-simple, io.micrometer:micrometer-core, io.fabric8:kubernetes-client, io.kubernetes:client-java, org.apache.logging.log4j:log4j-api, software.amazon.awssdk:ssm
- Only in onedev: HikariCP, hsqldb, com.hazelcast:hazelcast, org.jetbrains.kotlin:kotlin-stdlib, org.eclipse.jetty.ee11.websocket:jetty-ee11-websocket-jetty-server, org.eclipse.jetty.compression:jetty-compression-gzip, org.eclipse.jetty.compression:jetty-compression-server, org.hibernate.orm:hibernate-core, com.nimbusds:oauth2-oidc-sdk, org.apache.shiro:shiro-web, langchain4j-http-client-jdk, langchain4j-open-ai, dev.langchain4j:langchain4j, org.apache.tika:tika-core, org.eclipse.angus:jakarta.mail, com.google.zxing:javase, org.apache.commons:commons-csv, commons-validator, jersey-bean-validation, jul-to-slf4j, log4j-over-slf4j

## Side by side

| | OpenMetadata | onedev |
|---|---|---|
| Size | 2,166,002 lines written, 4,688 code files | 681,626 lines written, 4,693 code files |
| Who writes it | 8.8% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, and Jules | 0.5% of its commits signed by AI. With Cursor |
| Activity | Last push November 7, 2026, 20,467 commits, 15,711 stars | Last push November 7, 2026, 7,240 commits, 15,346 stars |
| Tests | 4,066 test files. 62.6% of its code files have a test that imports them | 229 test files. 10.6% 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, OpenMetadata or onedev?

OpenMetadata, with 2,166,002 lines written; onedev has 681,626.

The proof: [open-metadata/OpenMetadata's code at commit 3aaedca](https://github.com/open-metadata/OpenMetadata/tree/3aaedcaaf8705462a8cdc74d01fde259dd56eba7)

### Which has more GitHub stars, OpenMetadata or onedev?

OpenMetadata, with 15,711 stars; onedev has 15,346.

The proof: [open-metadata/OpenMetadata on GitHub](https://github.com/open-metadata/OpenMetadata)

### Which has more tests, OpenMetadata or onedev?

OpenMetadata, with 4,066 test files; onedev has 229.

The proof: [open-metadata/OpenMetadata's code at commit 3aaedca](https://github.com/open-metadata/OpenMetadata/tree/3aaedcaaf8705462a8cdc74d01fde259dd56eba7)

### Which was updated more recently, OpenMetadata or onedev?

Both got their last push on November 7, 2026.

The proof: [open-metadata/OpenMetadata's commits on GitHub](https://github.com/open-metadata/OpenMetadata/commits)

### Which has more commits signed by AI, OpenMetadata or onedev?

OpenMetadata: an AI signed 8.8% of its commits, with Claude Code, GitHub Copilot, Cursor, and Jules; in onedev, 0.5%.

The proof: [the commits each tool signed in open-metadata/OpenMetadata](https://seerepo.com/r/open-metadata/OpenMetadata/ai)

## Sources

- open-metadata/OpenMetadata: Read on November 7, 2026, at commit 3aaedca (https://github.com/open-metadata/OpenMetadata/tree/3aaedcaaf8705462a8cdc74d01fde259dd56eba7)
- theonedev/onedev: Read on November 8, 2026, at commit baf17ef (https://github.com/theonedev/onedev/tree/baf17ef94ec59023cab77a35afff67f06b286011)

## 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.