SeeRepo
Draw my repo

pulsar vs OpenMetadata

pulsar and OpenMetadata share 20 technologies: JAX-RS, javax.ws.rs-api, jersey-container-servlet, jersey-media-json-jackson, jetty-bom, jetty-ee10-servlets, jakarta.servlet:jakarta.servlet-api, org.glassfish.jersey.media:jersey-media-multipart, org.eclipse.jetty:jetty-util, org.eclipse.jetty:jetty-server, org.eclipse.jetty.ee10:jetty-ee10-servlet, javax.servlet:javax.servlet-api, java-jwt, commonmark-ext-gfm-tables, org.commonmark:commonmark, metrics-core, OpenTelemetry, org.slf4j:slf4j-api, org.apache.logging.log4j:log4j-api, and Prometheus. Both are written in Java.

Read it as markdown

What they share and what sets them apart

apache

pulsar

Apache Pulsar - distributed pub-sub messaging system

Java15.4kRead on November 8, 2026, at commit 1b6377eWhat is pulsar built with?

Only in pulsar

  • aws-java-sdk-bom
  • curator-recipes
  • hadoop-common
  • org.apache.hadoop:hadoop-hdfs-client
  • zookeeper
  • org.apache.avro:avro
  • com.github.ben-manes.caffeine:caffeine
  • github.com/apache/pulsar-client-go
  • RocksDB
  • grpc-bom
  • jersey-container-servlet-core
  • jersey-hk2
  • vertx-web
  • org.eclipse.jetty.ee10.websocket:jetty-ee10-websocket-jetty-server
  • org.eclipse.jetty.websocket:jetty-websocket-jetty-api
  • org.glassfish.jersey.core:jersey-server
  • org.eclipse.jetty.ee8:jetty-ee8-servlet
  • com.google.inject:guice
  • org.apache.felix:org.apache.felix.http.wrappers
  • org.eclipse.jetty.compression:jetty-compression-gzip
  • org.eclipse.jetty.compression:jetty-compression-server
  • aws-java-sdk-sts
  • jjwt-impl
  • jjwt-jackson
  • jwks-rsa
  • io.jsonwebtoken:jjwt-api
  • org.apache.kerby:kerb-simplekdc
  • commonmark-ext-heading-anchor
  • jakarta.validation-api
  • client-java
  • commons-logging
  • docker-java-core
  • io.opentelemetry:opentelemetry-bom
  • io.prometheus:simpleclient
  • jcl-over-slf4j
  • log4j-layout-template-json
  • org.apache.logging.log4j:log4j-bom
  • simpleclient_hotspot
  • simpleclient_servlet
  • slf4j-bom
  • io.opentelemetry:opentelemetry-sdk
  • org.apache.logging.log4j:log4j-core
  • github.com/prometheus/client_model
  • github.com/sirupsen/logrus
  • io.opentelemetry:opentelemetry-exporter-prometheus
  • io.opentelemetry.semconv:opentelemetry-semconv

In common

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.

Java15.7kRead on November 7, 2026, at commit 3aaedcaWhat is OpenMetadata built with?

Only in OpenMetadata

  • React
  • Vite
  • Flask
  • 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
  • jersey-server
  • jetty-ee10-bom
  • org.springframework:spring-beans
  • io.dropwizard:dropwizard-core
  • Spring
  • org.eclipse.jetty:jetty-http
  • 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
  • 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
  • owasp-java-html-sanitizer
  • poi-ooxml
  • com.github.jknack:handlebars
  • Apache
  • 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
  • jakarta.validation:jakarta.validation-api
  • com.networknt:json-schema-validator
  • org.jsonschema2pojo:jsonschema2pojo-core
  • javax.validation:validation-api
  • Hibernate
  • log4j-core
  • micrometer-observation
  • micrometer-registry-prometheus
  • slf4j-simple
  • io.micrometer:micrometer-core
  • io.fabric8:kubernetes-client
  • ch.qos.logback:logback-classic
  • ch.qos.logback:logback-core
  • io.kubernetes:client-java
  • software.amazon.awssdk:ssm

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
pulsar1,232,950 lines written2,913 code files
OpenMetadata2,166,002 lines written4,688 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
pulsar0.2% of its commits signed by AIWith Claude Code, GitHub Copilot, and Cursor
OpenMetadata8.8% of its commits signed by AIWith Claude Code, GitHub Copilot, Cursor, and Jules
ActivityFrom GitHub and its history, on the day SeeRepo read it.
pulsarLast push November 8, 202615,517 commits15,359 stars
OpenMetadataLast push November 7, 202620,467 commits15,711 stars
TestsThe files that test the code, and the share of code files a test imports.
pulsar2,292 test files63.3% of its code files have a test that imports them
OpenMetadata4,066 test files62.6% of its code files have a test that imports them

Frequently asked questions

Which is bigger, pulsar or OpenMetadata?
OpenMetadata, with 2,166,002 lines written; pulsar has 1,232,950.

The proof: open-metadata/OpenMetadata's code at commit 3aaedca

Which has more GitHub stars, pulsar or OpenMetadata?
OpenMetadata, with 15,711 stars; pulsar has 15,359.

The proof: open-metadata/OpenMetadata on GitHub

Which has more tests, pulsar or OpenMetadata?
OpenMetadata, with 4,066 test files; pulsar has 2,292.

The proof: open-metadata/OpenMetadata's code at commit 3aaedca

Which was updated more recently, pulsar or OpenMetadata?
pulsar: its last push was on November 8, 2026, and OpenMetadata's on November 7, 2026.

The proof: apache/pulsar's commits on GitHub

Which has more commits signed by AI, pulsar or OpenMetadata?
OpenMetadata: an AI signed 8.8% of its commits, with Claude Code, GitHub Copilot, Cursor, and Jules; in pulsar, 0.2%.

The proof: the commits each tool signed in open-metadata/OpenMetadata

See inside your code, today.

Paste your repo and see it drawn, part by part: a medium one in under a minute.

Free, no account.

Or look inside SeeRepo's own →