# Ably vs Eclipse Mosquitto

**Leader by vioscaleAI score:** Ably

| Attribute | Ably | Eclipse Mosquitto |
|---|---|---|
| **vioscaleAI score** | 75 (73% (medium)) | 44.3 (15% (low)) |
| activity.commits_last_30d | - | 12 |
| adoption.dependent_repos | - | 0 |
| adoption.github_stars | - | 11,250 |
| content.faq | `[{"answer":"Ably is a platform providing APIs and SDKs for building real-time features including messaging and chat, with fully managed cloud infrastructure. It is indexed under Realtime Messaging Infra.","source":"https://ably.com","question":"What is Ably?","confidence":0.6},{"answer":"Ably offers a free tier, so you can start without paying. Paid plans start at $0.25. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://ably.com/pricing","question":"Is Ably free?","confidence":0.6},{"answer":"Ably supports the web, macOS, iOS, Android and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://ably.com","question":"What platforms does Ably support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Ably, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://ably.com","question":"Can Ably be self-hosted?","confidence":0.6},{"answer":"We have confirmed 17 integrations for Ably, including AWS Lambda, Microsoft Azure Functions, Google Cloud Functions, Cloudflare Workers, AWS Kinesis, Kafka, RabbitMQ and AMQP, plus 9 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://ably.com/pricing","question":"What does Ably integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, HIPAA and GDPR for Ably. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Ably not holding them. Always confirm compliance directly before you rely on it.","source":"https://ably.com/security-and-compliance","question":"What security certifications does Ably have?","confidence":0.7},{"answer":"Ably is available in the United Kingdom, the United States and Australia. Its primary markets are the United Kingdom and the United States. The vendor is headquartered in the United Kingdom.","source":"https://ably.com/pricing","question":"Where is Ably available?","confidence":0.75}]` | `[{"answer":"An open-source server that implements the MQTT protocol to enable message exchange between connected clients and devices using a publish-subscribe pattern. It is indexed under Realtime Messaging Infra.","source":"https://mosquitto.org","question":"What is Eclipse Mosquitto?","confidence":0.6},{"answer":"Eclipse Mosquitto is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://mosquitto.org","question":"Is Eclipse Mosquitto free to use?","confidence":0.6},{"answer":"Eclipse Mosquitto supports Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://mosquitto.org","question":"What platforms does Eclipse Mosquitto support?","confidence":0.6},{"answer":"Yes. Eclipse Mosquitto can be deployed on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://mosquitto.org","question":"Can Eclipse Mosquitto be self-hosted?","confidence":0.6}]` |
| deployment.options | `{"cloud":true}` | `{"self_hosted":true}` |
| description.long | Ably is a platform providing APIs and SDKs for building real-time features including messaging and chat, with fully managed cloud infrastructure. | A message routing system that follows the MQTT standard, enabling publish-subscribe communication between networked applications, with support for multiple protocol versions and built-in client libraries |
| features.capabilities | `{"presence":true,"deployment":"cloud-hosted","pricing_model":"MAU-metered","global_edge_network":true}` | `{"deployment":"self-host","mqtt_support":true,"pricing_model":"open-source-self-host","self_hostable":true}` |
| integrations.count | 17 | - |
| integrations.list | `[{"name":"AWS Lambda"},{"name":"Microsoft Azure Functions"},{"name":"Google Cloud Functions"},{"name":"Cloudflare Workers"},{"name":"AWS Kinesis"},{"name":"Kafka"},{"name":"RabbitMQ"},{"name":"AMQP"},{"name":"AWS SQS"},{"name":"Pulsar"},{"name":"Zapier"},{"name":"IFTTT"},{"name":"Datadog"},{"name":"BigQuery"},{"name":"Terraform"},{"name":"Netlify"},{"name":"HTTP Webhooks"}]` | - |
| language.primary | - | C |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"ios":true,"mac":true,"web":true,"android":true,"windows":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"Free","features":["All Ably products included","Community and email support","No commitment"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Proof of concept development","contactSales":false,"includedLimits":{"message_size":"64KiB","message_storage":"1 day","concurrent_connections":"200"}},{"free":false,"name":"Standard","summary":"$29/month plus usage charges","features":["1 day email support SLA"],"components":[{"kind":"fixed","amount":29,"period":"month","currency":"USD"},{"per":{"qty":1000000,"unit":"messages"},"kind":"metered","amount":2.5,"currency":"USD"},{"per":{"qty":1000000,"unit":"channel_minutes"},"kind":"metered","amount":1,"currency":"USD"},{"per":{"qty":1,"unit":"GiB"},"kind":"metered","amount":0.25,"currency":"USD"}],"description":"Production deployment","contactSales":false},{"free":false,"name":"Pro","summary":"$399/month plus usage charges","features":["4 hour email support SLA","Datadog lite monitoring"],"components":[{"kind":"fixed","amount":399,"period":"month","currency":"USD"},{"per":{"qty":1000000,"unit":"messages"},"kind":"metered","amount":2.5,"currency":"USD"},{"per":{"qty":1000000,"unit":"channel_minutes"},"kind":"metered","amount":1,"currency":"USD"},{"per":{"qty":1,"unit":"GiB"},"kind":"metered","amount":0.25,"currency":"USD"}],"description":"Business critical workloads","contactSales":false},{"free":false,"name":"Enterprise","summary":"Custom pricing","features":["24/7 mission critical support","99.999% uptime SLA","Committed use discounts","Datadog integration","SSO and SCIM","CNAME custom domain","Architectural guidance","Regional data routing","Dedicated cluster"],"contactSales":true}],"summary":"Free tier available. Paid plans start at $29/month with per-million message and channel minute billing.","currency":"USD","freeTier":true,"sourceUrl":"https://ably.com/pricing","retrievedAt":"2026-08-19T18:25:09.786Z","startingPrice":{"amount":29,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://mosquitto.org","retrievedAt":"2026-08-19T18:21:59.744Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | open_source |
| pricing.price_level | low | free |
| pricing.starting_price | `{"amount":29,"currency":"USD"}` | - |
| pricing.transparent | yes | - |
| reliability.sla_pct | 99.999 | - |
| reliability.status_page | yes | - |
| security.disclosure_policy | - | yes |
| security.gdpr | yes | - |
| security.hipaa | yes | - |
| security.soc2 | yes | - |
| security.trust_center | - | https://mosquitto.org/blog/2017/05/security-advisory-cve-2017-7650/ |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Feclipse-mosquitto%2Fmosquitto&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Realtime Messaging Infra)

| Capability | Ably | Eclipse Mosquitto |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Presence | ✓ | - |
| Message history replay | - | - |
| Delivery guarantee | - | - |
| Global edge network | ✓ | - |
| Scaling model | - | - |
| Offline reconnect catchup | - | - |
| Push notification bridge | - | - |
| Auth model | - | - |
| Self hostable | - | ✓ |
| Mqtt support | - | ✓ |
| Deployment | Cloud hosted | Self host |
| Pricing model | MAU metered | Open source self host |

*Source: vioscaleAI. Generated 2026-10-16T19:14:50.788Z. "-" = undocumented, not absent.*