# ZeroMQ

- **Canonical URI:** https://www.vioscale.ai/software/zeromq
- **Category:** Message Queues
- **Homepage:** https://zeromq.org
- **Also known as:** zeromq
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-05T13:15:08.327Z

## Vioscale score

**51.5 / 100**, confidence 39% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 28.9 | 0.07 | 2 | ✓ |
| github_stars | 76.2 | 0.029 | 2.2 | ✓ |
| integrations | 31 | 0.094 | 2.9 | ✓ |
| github_activity | 41 | 0.105 | 4.3 | ✓ |
| release_cadence | 1.7 | 0.058 | 0.1 | ✓ |
| security_posture | 0 | 0.129 | 0 | - |
| package_downloads | 96.1 | 0.152 | 14.6 | ✓ |
| stackoverflow_activity | 0 | 0.07 | 0 | - |

## Pricing

_As of 2026-08-05, [verify at source](https://zeromq.org). Independently observed._

Open source · Free tier

## Platform & deployment
- **Deployment:** Self-hosted

## Integrations (11)

_Independently observed._

- Microsoft
- Samsung
- AT&T
- Spotify
- Facebook
- Digital Ocean
- Auth0
- Bitcoin
- Jupyter
- Mongrel2
- Jina

## Capabilities

_The capabilities that matter for Message Queues. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Core** | |
| Messaging paradigm | Pub/sub |
| **Correctness** | |
| Delivery guarantee | - |
| Ordering guarantee | - |
| **Durability** | |
| Durable replayable log | - |
| Message replay / rewind | - |
| **Interop** | |
| Wire protocol | inproc, IPC, TCP, UDP, TIPC, multicast, WebSocket |
| Kafka-protocol compatible | - |
| **Scale** | |
| Partitioned horizontal scaling | ✓ |
| **Consumption** | |
| Consumer groups / competing consumers | - |
| Dead-letter queue | - |
| **Scale** | |
| Geo / cross-region replication | - |
| **Deployment** | |
| Managed cloud offering exists | - |
| Hosting | Self-hosted only |
| **Processing** | |
| Built-in stream processing | - |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 19 | [link](https://github.com/zeromq/libzmq/pulse) | 2026-07-31 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 10,956 | [link](https://github.com/zeromq/libzmq) | 2026-07-31 | 90% (high) |
| adoption.package_downloads_weekly | 25,005,888 | [link](https://pypistats.org/packages/pyzmq) | 2026-07-31 | 60% (medium) |

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | C++ | [link](https://github.com/zeromq/libzmq) | 2026-07-31 | 63% (medium) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | MPL-2.0 | [link](https://github.com/zeromq/libzmq) | 2026-07-31 | 67% (medium) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.model | open_source | [link](https://zeromq.org) | 2026-08-05 | 60% (medium) |
| pricing.free_tier | yes | [link](https://zeromq.org) | 2026-08-05 | 60% (medium) |
| pricing.price_level | free | [link](https://zeromq.org) | 2026-08-05 | 60% (medium) |
| pricing.transparent | yes | [link](https://zeromq.org) | 2026-08-05 | 60% (medium) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 177 | [link](https://github.com/zeromq/libzmq/releases) | 2026-07-31 | 70% (medium) |

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 11 | [link](https://zeromq.org) | 2026-08-05 | 60% (medium) |

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*Source: Vioscale (https://www.vioscale.ai/software/zeromq). Independent, evidence-based software intelligence. Cite the canonical URI.*