Expo
Expo keeps widening EAS from build/deploy into observability and testing
Comparison · Infra & APIs
Ably vs Rootly
A side-by-side editorial comparison of Ably and Rootly — release velocity, themes, recent moves, and the top alternatives to consider.
Ably vs Rootly: at a glance
| Feature | Ably | Rootly |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 5.0 | 6.3 |
| Sparks · 30d | 0 | 1 |
| Top themes | realtime, ai-agents, sdk, durable-execution | incident-management, on-call, ai-agent, retrospectives |
| Last editorial update | 3d ago | 3d ago |
| Website | — | — |
What is Ably?
Ably is repositioning its realtime infrastructure as the transport layer for AI agents
Ably keeps shipping across its SDK matrix (JS, Java, Cocoa), but the center of energy is the AI Transport SDK, iterating fast from v0.3.0 to v0.5.0. Each release hardens realtime messaging for AI agents: declarative codecs and Presence/LiveObjects pass-through (0.3.0), external data hydration to stitch an app's own message store to the channel (0.4.0), and durable execution via a Step primitive that survives process restarts and retries in Temporal or Vercel's Workflow Development Kit (0.5.0). Core Pub/Sub keeps advancing too — React Native push and a LiveObjects path-based API.
What is Rootly?
Rootly is wiring an AI agent through every corner of incident response.
Rootly is an incident-management and on-call platform betting heavily on embedded AI. Its Rootly Agent, launched in Slack, now also lives as a chat panel inside the web app answering from live incident context, and AI now drafts retrospectives from incident data, Slack, and call transcripts. Around that AI core it keeps shipping operational depth: on-call widgets, global pay calculation, Cortex catalog sync, and Intune-protected mobile access.
Ably vs Rootly: editorial side-by-side
Ably
5.0INFRA · APIS
Ably is repositioning its realtime infrastructure as the transport layer for AI agents
◆ Current state
Ably keeps shipping across its SDK matrix (JS, Java, Cocoa), but the center of energy is the AI Transport SDK, iterating fast from v0.3.0 to v0.5.0. Each release hardens realtime messaging for AI agents: declarative codecs and Presence/LiveObjects pass-through (0.3.0), external data hydration to stitch an app's own message store to the channel (0.4.0), and durable execution via a Step primitive that survives process restarts and retries in Temporal or Vercel's Workflow Development Kit (0.5.0). Core Pub/Sub keeps advancing too — React Native push and a LiveObjects path-based API.
◆ Where it's heading
Ably is extending its realtime-delivery guarantees into agent orchestration: exactly-once-feeling semantics for agent turns, durability across at-least-once retries, and shared read-only conversation views for client and agent. The bet is that AI apps need the same ordering, presence, and history primitives Ably already sells — repackaged for agent runs rather than chat messages.
◆ Prediction
Expect the AI Transport SDK to keep maturing toward a 1.0 with fewer breaking changes, more workflow-engine integrations beyond Temporal and Vercel, and continued path-based LiveObjects work across language SDKs. The realtime core stays on its steady incremental cadence.
Rootly
6.3INFRA · APIS
Rootly is wiring an AI agent through every corner of incident response.
◆ Current state
Rootly is an incident-management and on-call platform betting heavily on embedded AI. Its Rootly Agent, launched in Slack, now also lives as a chat panel inside the web app answering from live incident context, and AI now drafts retrospectives from incident data, Slack, and call transcripts. Around that AI core it keeps shipping operational depth: on-call widgets, global pay calculation, Cortex catalog sync, and Intune-protected mobile access.
◆ Where it's heading
The direction is an AI agent threaded through the full incident lifecycle — detection, response, and now retrospective — plus MCP with OAuth so external agents and tools connect using scoped, short-lived tokens. Rootly is positioning against incumbents on AI-native incident response while still filling in enterprise and on-call table stakes (mobile MDM, catalog integrations, pay tooling). The two tracks reinforce each other: operational data feeds the AI, and the AI makes that data actionable.
◆ Prediction
Expect the Rootly Agent to reach more surfaces and take on more of the retrospective and response workflow, with continued MCP and agent-connectivity investment. Enterprise and on-call feature upkeep will run alongside as parity work.
Alternatives to Ably and Rootly
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Ably or Rootly.
Buildkite
Buildkite is rebuilding CI to be legible to AI agents, not just humans
Auth0
Auth0 keeps widening its enterprise identity surface, one GA at a time
GitHub
GitHub is building the governance layer for AI-written code.
Honeybadger
Honeybadger keeps broadening from error monitoring toward a full observability tool.
SpinupWP
SpinupWP keeps pulling routine server ops out of SSH and into the dashboard.
Recent activity from Ably and Rootly
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoAblyPub/Sub JS SDK v2.25.0: Push notifications for React Native
- 5d agoRootlyThe on-call widget, 24-hour time, and a new Alerts table.
- 7d agoAblyJava SDK v1.8.0: Support LiveObjects Path based API
- 11d agoAblyAbly AI Transport JS SDK Release v0.5.0
- 11d agoAblyAI Transport JS SDK v0.5.0: Durable execution support through Steps
- 12d agoRootlyRetrospective templates with customizable AI-blocks ⚡
- 19d agoAblyAI Transport JS SDK v0.4.0: External data hydration support
- 19d agoAblyAbly AI Transport JS SDK Release v0.4.0
- 20d agoRootlyAsk anything about an incident, right in the web app.
- 28d agoRootlyBuild incident response around your live Cortex catalog.
- 1mo agoRootlyBring your Intune protection policies to Rootly mobile.
- 1mo agoRootlyPay calculator for global teams
Frequently asked questions
What is the difference between Ably and Rootly?
They serve adjacent needs but don't currently overlap on shipped themes. Rootly is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Ably better than Rootly?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Rootly is currently shipping more aggressively (velocity 6.3 vs 5.0), with 1 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Ably?
Top Ably alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Ably alternatives" section above for the current picks, or visit /alternatives/ably for the full list with editorial commentary on each.
What are the best alternatives to Rootly?
Top Rootly alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Rootly alternatives" section above for the current picks, or visit /alternatives/rootly for the full list with editorial commentary on each.