# Google Cloud Pub/Sub vs RabbitMQ

**Leader by Vioscale score:** RabbitMQ

| Attribute | Google Cloud Pub/Sub | RabbitMQ |
|---|---|---|
| **Vioscale score** | 53.4 (49% (low)) | 64.6 (38% (low)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 3 |
| adoption.github_stars | - | 13,807 |
| adoption.package_downloads_weekly | - | 3,179,580 |
| deployment.options | `{"cloud":true}` | `{"cloud":true,"on_prem":true,"self_hosted":true}` |
| description.long | A cloud-based publish/subscribe messaging system that enables applications to ingest and stream event data at scale with guaranteed delivery, automatic scaling, and built-in replay capabilities. Integrates with data warehouses and stream processing pipelines for real-time analytics. | A powerful, enterprise-grade open-source messaging and streaming broker that enables efficient, reliable and versatile communication for distributed microservices, real-time data, and IoT applications. |
| features.capabilities | `{"hosting":"cloud","ordering":"per_key","paradigm":"pubsub","message_replay":true,"persistent_log":true,"consumer_groups":true,"geo_replication":true,"managed_offering":true,"stream_processing":true,"delivery_guarantee":"at_least_once","horizontal_scaling":true}` | `{"hosting":"both","paradigm":"queue","protocol":"AMQP 1.0, MQTT 5.0, STOMP","persistent_log":true,"consumer_groups":true,"geo_replication":true,"managed_offering":true,"stream_processing":true,"delivery_guarantee":"at_least_once","horizontal_scaling":true}` |
| integrations.count | 3 | - |
| integrations.list | `[{"name":"BigQuery"},{"name":"Cloud Storage"},{"name":"Dataflow"}]` | - |
| language.primary | - | JavaScript |
| license.spdx | - | BSD-3-Clause |
| market.availability | `{"hqCountry":"US","primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"web":true,"linux":true}` |
| pricing | `{"type":"usage","plans":[{"free":false,"name":"Standard Pub/Sub","summary":"$40/TiB throughput + $0.27/GiB-month storage (first 10 GiB throughput free)","features":["At-least-once message delivery","Per-key message ordering","Pull and push delivery modes","Cross-zone replication","Automatic scaling and provisioning","Message retention and snapshots"],"components":[{"per":{"qty":1,"unit":"TiB"},"kind":"metered","amount":40,"currency":"USD"},{"per":{"qty":1,"unit":"GiB-month"},"kind":"metered","amount":0.27,"currency":"USD"}],"description":"Pay-as-you-go pricing based on message throughput and retention","contactSales":false,"includedLimits":{"free_throughput":"10 GiB/month"}}],"addOns":[{"name":"BigQuery Subscription","components":[{"per":{"qty":1,"unit":"TiB"},"kind":"metered","amount":50,"currency":"USD"}]},{"name":"Cloud Storage Subscription","components":[{"per":{"qty":1,"unit":"TiB"},"kind":"metered","amount":50,"currency":"USD"}]},{"name":"Kinesis Data Streams Import","components":[{"per":{"qty":1,"unit":"TiB"},"kind":"metered","amount":50,"currency":"USD"}]},{"name":"Other Source Imports (Azure Event Hubs, AWS MSK, Confluent Cloud)","components":[{"per":{"qty":1,"unit":"TiB"},"kind":"metered","amount":80,"currency":"USD"}]}],"summary":"Usage-based: $40/TiB throughput, $0.27/GiB-month storage. Free tier: 10 GiB/month throughput.","currency":"USD","freeTier":true,"sourceUrl":"https://cloud.google.com/pubsub","retrievedAt":"2026-08-05T13:22:58.268Z","startingPrice":{"amount":0.27,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"hybrid","plans":[{"free":true,"name":"Open Source","description":"Free and open source under Mozilla Public License 2.0","contactSales":false},{"free":false,"name":"Tanzu RabbitMQ","description":"Enterprise-grade commercial offering with 24/7 expert support, longer lifecycle, disaster recovery, cloud cost savings, and industry compliance","contactSales":true}],"summary":"Free open source, with commercial Tanzu RabbitMQ offering available","freeTier":true,"sourceUrl":"https://www.rabbitmq.com","retrievedAt":"2026-08-05T13:27:32.390Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | low | low |
| pricing.transparent | no | no |
| release.cadence_days | - | 9 |
| release.history | - | `[{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.5","date":"2026-08-17T21:41:39Z","type":"stable","version":"v4.3.5"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.4","date":"2026-07-23T14:46:25Z","type":"stable","version":"v4.3.4"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9","date":"2026-07-20T14:43:28Z","type":"stable","version":"v4.2.9"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3","date":"2026-07-20T14:55:46Z","type":"stable","version":"v4.3.3"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.8","date":"2026-06-15T15:08:29Z","type":"stable","version":"v4.2.8"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.2","date":"2026-06-15T15:34:09Z","type":"stable","version":"v4.3.2"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.1","date":"2026-05-20T01:21:53Z","type":"stable","version":"v4.3.1"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.7","date":"2026-05-19T23:48:35Z","type":"stable","version":"v4.2.7"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.0","date":"2026-04-23T01:18:14Z","type":"stable","version":"v4.3.0"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6","date":"2026-04-23T00:54:49Z","type":"stable","version":"v4.2.6"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.0-rc.1","date":"2026-04-20T18:19:14Z","type":"prerelease","version":"v4.3.0-rc.1"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.0-rc.0","date":"2026-03-26T03:47:43Z","type":"prerelease","version":"v4.3.0-rc.0"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.5","date":"2026-03-17T00:29:33Z","type":"stable","version":"v4.2.5"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.4","date":"2026-02-17T01:44:57Z","type":"stable","version":"v4.2.4"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.3","date":"2026-01-22T03:57:50Z","type":"stable","version":"v4.2.3"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.1.8","date":"2026-01-22T03:48:39Z","type":"stable","version":"v4.1.8"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.2","date":"2025-12-15T18:25:36Z","type":"stable","version":"v4.2.2"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.1.7","date":"2025-12-15T18:10:15Z","type":"stable","version":"v4.1.7"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.1","date":"2025-11-17T02:47:15Z","type":"stable","version":"v4.2.1"},{"url":"https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.1.6","date":"2025-11-17T02:23:37Z","type":"stable","version":"v4.1.6"}]` |
| reliability.status_page | yes | - |
| security.disclosure_policy | - | yes |
| security.scorecard | - | 5.8 |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=rabbitmq-server&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Message Queues)

| Capability | Google Cloud Pub/Sub | RabbitMQ |
|---|:--:|:--:|
| **Core** |  |  |
| Messaging paradigm | Pub/sub | Queue |
| **Correctness** |  |  |
| Delivery guarantee | At-least-once | At-least-once |
| Ordering guarantee | Per-key | - |
| **Durability** |  |  |
| Durable replayable log | ✓ | ✓ |
| Message replay / rewind | ✓ | - |
| **Interop** |  |  |
| Wire protocol | - | AMQP 1.0, MQTT 5.0, STOMP |
| Kafka-protocol compatible | - | - |
| **Scale** |  |  |
| Partitioned horizontal scaling | ✓ | ✓ |
| Geo / cross-region replication | ✓ | ✓ |
| **Consumption** |  |  |
| Consumer groups / competing consumers | ✓ | ✓ |
| Dead-letter queue | - | - |
| **Deployment** |  |  |
| Managed cloud offering exists | ✓ | ✓ |
| Hosting | Cloud only | Cloud + self-hosted |
| **Processing** |  |  |
| Built-in stream processing | ✓ | ✓ |

*Source: Vioscale. Generated 2026-09-01T17:24:07.462Z. "-" = undocumented, not absent.*