# Memphis vs NATS

**Leader by Vioscale score:** NATS

| Attribute | Memphis | NATS |
|---|---|---|
| **Vioscale score** | 40.6 (24% (low)) | 75.4 (48% (low)) |
| activity.commits_last_30d | 0 | 100 |
| adoption.dependent_repos | 0 | 24,884 |
| adoption.github_stars | 3,439 | 20,599 |
| adoption.package_downloads_weekly | - | 1,291,214 |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"cloud":true,"on_prem":true,"self_hosted":true}` |
| description.long | - | NATS enables components of a distributed software system to send messages to each other. It is an open-source project maintained by the Cloud Native Computing Foundation and can be deployed across cloud environments, on-site servers, edge computing devices, and embedded systems. |
| features.capabilities | `{"hosting":"both","ordering":"per_partition","paradigm":"queue","message_replay":true,"persistent_log":true,"consumer_groups":true,"managed_offering":true,"dead_letter_queue":true,"delivery_guarantee":"at_least_once","horizontal_scaling":true}` | `{"hosting":"self","paradigm":"pubsub","message_replay":true,"persistent_log":true,"consumer_groups":true,"horizontal_scaling":true}` |
| language.primary | Go | Go |
| license.spdx | - | Apache-2.0 |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | - | `{"cli":true}` |
| pricing | `{"type":"hybrid","freeTier":true,"sourceUrl":"http://memphis.dev/","retrievedAt":"2026-08-21T13:19:54.561Z"}` | `{"type":"open_source","sourceUrl":"https://nats.io","retrievedAt":"2026-08-14T12:15:06.032Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | open_source |
| pricing.price_level | low | free |
| release.cadence_days | 21 | 1 |
| release.history | `[{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.4.4","date":"2024-05-27T12:23:48Z","type":"stable","version":"v1.4.4"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.4.3","date":"2024-01-22T13:03:00Z","type":"stable","version":"v1.4.3"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.4.2","date":"2024-01-03T16:48:38Z","type":"stable","version":"v1.4.2"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.4.1","date":"2023-12-13T14:01:15Z","type":"stable","version":"v1.4.1"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.4.0","date":"2023-11-26T11:44:19Z","type":"stable","version":"v1.4.0"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.3.1","date":"2023-11-06T13:01:19Z","type":"stable","version":"v1.3.1"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.3.0","date":"2023-09-11T14:13:52Z","type":"stable","version":"v1.3.0"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.2.0","date":"2023-08-10T15:06:54Z","type":"stable","version":"v1.2.0"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.1.1","date":"2023-07-18T18:32:38Z","type":"stable","version":"v1.1.1"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.1.0","date":"2023-07-13T20:03:23Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.0.3","date":"2023-05-31T09:53:49Z","type":"stable","version":"v1.0.3"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.0.2-stable","date":"2023-04-24T15:42:41Z","type":"stable","version":"v1.0.2-stable"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.0.1-stable","date":"2023-04-16T17:47:09Z","type":"stable","version":"v1.0.1-stable"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v1.0.0","date":"2023-04-02T20:15:44Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v0.4.5-beta","date":"2023-02-21T13:53:13Z","type":"stable","version":"v0.4.5-beta"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v0.4.4-beta","date":"2023-01-31T13:07:07Z","type":"stable","version":"v0.4.4-beta"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v0.4.3-beta","date":"2023-01-06T05:24:05Z","type":"stable","version":"v0.4.3-beta"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v0.4.2-beta","date":"2022-12-05T10:59:39Z","type":"stable","version":"v0.4.2-beta"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v0.4.1-beta","date":"2022-11-28T15:24:52Z","type":"stable","version":"v0.4.1-beta"},{"url":"https://github.com/superstreamlabs/memphis/releases/tag/v0.4.0-beta","date":"2022-11-07T21:38:29Z","type":"stable","version":"v0.4.0-beta"}]` | `[{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.6-RC.2","date":"2026-08-26T17:01:24Z","type":"prerelease","version":"v2.14.6-RC.2"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.6-RC.1","date":"2026-08-25T16:47:43Z","type":"prerelease","version":"v2.14.6-RC.1"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.15.0-preview.1","date":"2026-08-24T13:33:40Z","type":"prerelease","version":"v2.15.0-preview.1"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.5","date":"2026-08-12T15:31:27Z","type":"stable","version":"v2.14.5"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.15","date":"2026-08-12T15:30:42Z","type":"stable","version":"v2.12.15"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.4","date":"2026-07-30T13:57:21Z","type":"stable","version":"v2.14.4"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.14","date":"2026-07-30T13:56:36Z","type":"stable","version":"v2.12.14"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.3","date":"2026-06-29T15:36:28Z","type":"stable","version":"v2.14.3"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.12","date":"2026-06-29T15:36:04Z","type":"stable","version":"v2.12.12"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.11","date":"2026-06-09T14:57:16Z","type":"stable","version":"v2.12.11"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.2","date":"2026-06-02T16:02:48Z","type":"stable","version":"v2.14.2"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.10","date":"2026-06-02T16:02:24Z","type":"stable","version":"v2.12.10"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.2-RC.1","date":"2026-05-29T15:17:59Z","type":"prerelease","version":"v2.14.2-RC.1"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.10-RC.1","date":"2026-05-29T15:16:47Z","type":"prerelease","version":"v2.12.10-RC.1"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.1","date":"2026-05-20T15:42:27Z","type":"stable","version":"v2.14.1"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.9","date":"2026-05-20T15:41:50Z","type":"stable","version":"v2.12.9"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.1-RC.2","date":"2026-05-19T16:39:13Z","type":"prerelease","version":"v2.14.1-RC.2"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.9-RC.2","date":"2026-05-19T16:38:34Z","type":"prerelease","version":"v2.12.9-RC.2"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.1-RC.1","date":"2026-05-14T15:12:59Z","type":"prerelease","version":"v2.14.1-RC.1"},{"url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.9-RC.1","date":"2026-05-14T15:12:19Z","type":"prerelease","version":"v2.12.9-RC.1"}]` |
| security.gdpr | - | yes |
| security.scorecard | - | 7.2 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=memphis%2Fmemphis&per_page=100","last_12m":0,"max_severity":null}` | `{"count":29,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fnats-io%2Fnats-server%2Fv2&per_page=100","last_12m":14,"max_severity":"CRITICAL"}` |

## Capabilities (Message Queues)

| Capability | Memphis | NATS |
|---|:--:|:--:|
| **Core** |  |  |
| Messaging paradigm | Queue | Pub/sub |
| **Correctness** |  |  |
| Delivery guarantee | At-least-once | - |
| Ordering guarantee | Per-partition | - |
| **Durability** |  |  |
| Durable replayable log | ✓ | ✓ |
| Message replay / rewind | ✓ | ✓ |
| **Interop** |  |  |
| Wire protocol | - | - |
| 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 | Self-hosted only |
| **Processing** |  |  |
| Built-in stream processing | - | - |

*Source: Vioscale. Generated 2026-09-01T17:06:54.382Z. "-" = undocumented, not absent.*