# Redpanda vs Solace

**Leader by Vioscale score:** Redpanda

| Attribute | Redpanda | Solace |
|---|---|---|
| **Vioscale score** | 69 (59% (medium)) | 39.4 (7% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.dependent_repos | 25 | - |
| adoption.github_stars | 12,485 | - |
| deployment.options | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | A data streaming platform designed to reduce operational costs while maintaining high throughput. Kafka-compatible with support for both managed cloud deployments (Dedicated, BYOC, Serverless) and self-hosted options, featuring tiered storage, built-in data transforms, and governance capabilities for AI agents. | A messaging service that enables developers to create event-driven applications and microservices using multiple programming languages and open protocols (MQTT, REST, JMS, proprietary Direct) across cloud and self-hosted deployment options. |
| features.capabilities | `{"hosting":"both","ordering":"per_partition","paradigm":"log_stream","protocol":"Kafka protocol","message_replay":true,"persistent_log":true,"consumer_groups":true,"geo_replication":true,"kafka_compatible":true,"managed_offering":true,"stream_processing":true,"delivery_guarantee":"at_least_once","horizontal_scaling":true}` | `{"hosting":"both","ordering":"per_partition","paradigm":"pubsub","protocol":"MQTT, REST, JMS, Direct","persistent_log":false,"consumer_groups":true,"managed_offering":true,"delivery_guarantee":"at_most_once","horizontal_scaling":true}` |
| integrations.count | 300 | 4 |
| integrations.list | `[{"name":"Kafka"},{"name":"PostgreSQL"},{"name":"Apache Iceberg"},{"name":"Snowflake"},{"name":"BigQuery"},{"name":"Google Cloud Storage"},{"name":"AWS"},{"name":"Google Cloud Platform"},{"name":"Azure"}]` | `[{"name":"AWS"},{"name":"Kafka"},{"name":"Spark"},{"name":"IBM WebSphere"}]` |
| language.primary | C++ | - |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"linux":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Community Edition","summary":"Free, BSL license","description":"Free, source-available under BSL","contactSales":false},{"free":false,"name":"Enterprise Edition","summary":"Contact for pricing","description":"Commercially supported self-managed deployment","contactSales":true},{"free":false,"name":"Redpanda Cloud","summary":"Contact for pricing","description":"Fully-managed cloud service with Dedicated, BYOC, and Serverless options","contactSales":true}],"summary":"Free tier (Community Edition). Cloud and Enterprise plans available via quote.","currency":"USD","freeTier":true,"sourceUrl":"https://www.redpanda.com","retrievedAt":"2026-08-14T12:13:12.076Z"}` | - |
| pricing.free_tier | yes | - |
| pricing.model | commercial | - |
| pricing.price_level | low | - |
| pricing.transparent | no | - |
| release.cadence_days | 6 | - |
| release.history | `[{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.2.2","date":"2026-08-22T00:45:06Z","type":"stable","version":"v26.2.2"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.17","date":"2026-08-20T00:03:34Z","type":"stable","version":"v26.1.17"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v25.3.17","date":"2026-08-20T00:04:06Z","type":"stable","version":"v25.3.17"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.16","date":"2026-08-13T19:25:19Z","type":"stable","version":"v26.1.16"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v25.3.16","date":"2026-08-13T19:13:59Z","type":"stable","version":"v25.3.16"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.15","date":"2026-08-07T03:37:58Z","type":"stable","version":"v26.1.15"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.2.1","date":"2026-07-28T17:59:50Z","type":"stable","version":"v26.2.1"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.14","date":"2026-07-24T11:39:02Z","type":"stable","version":"v26.1.14"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.13","date":"2026-07-17T02:23:03Z","type":"stable","version":"v26.1.13"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.12","date":"2026-06-28T05:05:50Z","type":"stable","version":"v26.1.12"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.11","date":"2026-06-25T23:58:29Z","type":"stable","version":"v26.1.11"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.10","date":"2026-06-12T15:46:57Z","type":"stable","version":"v26.1.10"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v25.3.15","date":"2026-06-04T21:12:07Z","type":"stable","version":"v25.3.15"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.9","date":"2026-05-22T12:40:44Z","type":"stable","version":"v26.1.9"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.8","date":"2026-05-14T12:16:09Z","type":"stable","version":"v26.1.8"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.7","date":"2026-05-08T12:48:18Z","type":"stable","version":"v26.1.7"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.6","date":"2026-04-22T01:35:02Z","type":"stable","version":"v26.1.6"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v25.3.14","date":"2026-04-16T14:42:56Z","type":"stable","version":"v25.3.14"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.5","date":"2026-04-15T14:20:44Z","type":"stable","version":"v26.1.5"},{"url":"https://github.com/redpanda-data/redpanda/releases/tag/v26.1.4","date":"2026-04-11T15:29:06Z","type":"stable","version":"v26.1.4"}]` | - |
| reliability.sla_pct | 99.99 | - |
| reliability.status_page | yes | - |
| security.disclosure_policy | yes | - |
| security.gdpr | yes | - |
| security.scorecard | 6.5 | - |
| security.soc2 | yes | - |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fredpanda-data%2Fredpanda%2Fsrc%2Fgo%2Frpk&per_page=100","last_12m":0,"max_severity":null}` | - |

## Capabilities (Message Queues)

| Capability | Redpanda | Solace |
|---|:--:|:--:|
| **Core** |  |  |
| Messaging paradigm | Log / streaming | Pub/sub |
| **Correctness** |  |  |
| Delivery guarantee | At-least-once | At-most-once |
| Ordering guarantee | Per-partition | Per-partition |
| **Durability** |  |  |
| Durable replayable log | ✓ | ✗ |
| Message replay / rewind | ✓ | - |
| **Interop** |  |  |
| Wire protocol | Kafka protocol | MQTT, REST, JMS, Direct |
| 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 + self-hosted | Cloud + self-hosted |
| **Processing** |  |  |
| Built-in stream processing | ✓ | - |

*Source: Vioscale. Generated 2026-09-01T16:43:53.750Z. "-" = undocumented, not absent.*