Ably vs Apache Kafka vs Keen IO vs Prometheus
| Attribute | ||||
|---|---|---|---|---|
| Category | Cloud & Infrastructure | Data & Databases | Data & Databases | Monitoring & Observability |
| Pricing | Free tier | Free tier | Paid | Free tier |
| Starting price | $29/month | $0/month | $149/month | $0/month |
| Free tier | Yes | Yes | No | Yes |
| Free trial | No | Yes | No | No |
| Deployment | — | — | — | — |
| API available | Unknown | Unknown | Unknown | Unknown |
| Platforms | — | — | — | — |
| Certifications | — | — | — | — |
| Integrations | — | — | — | — |
| Company | Founded 2016 | Founded 2010 | — | Founded 2012 |
| Feature attributes | ||||
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.