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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

FeatureAblyRootly
SectorInfra & APIsInfra & APIs
Velocity score6.36.3
Sparks · 30d11
Top themesreal-time-infra, liveobjects, agentic-ai, pub-subincident-management, ai-agents, on-call, observability
Last editorial update7h ago21h ago
Website

What is Ably?

Ably graduates LiveObjects to stable across Java and iOS SDKs, completing its real-time state-sync layer for AI agent deployments.

Ably has spent the past two months landing its LiveObjects feature—a path-based API for managing fast-changing shared state—across its major client SDKs. Java SDK v1.8.1 marks the last major platform leaving experimental, following the Cocoa/Swift SDK in early September. In parallel, the AI Transport JS SDK has grown Temporal workflow support and Vercel AI SDK v7 compatibility, and the Terraform provider reached v1.1.0 with significant new surface area including moderation rules and before-publish hooks.

Read the full Ably trajectory →

What is Rootly?

Rootly's AI agent is going proactive — surfacing incident context before responders think to ask for it.

Rootly has shipped a concentrated run of AI features that push the incident workflow from reactive tooling to ambient assistance. The agent now automatically posts relevant past incidents into the incident channel, transcribes calls with speaker labels in real time, operates on mobile without a laptop, and can sync service catalog data from GitHub and Backstage via CLI. Custom fields on action items unify the data model between incidents and the tasks generated from them.

Read the full Rootly trajectory →

Ably vs Rootly: editorial side-by-side

A
Ably
INFRA · APIS
6.3

Ably graduates LiveObjects to stable across Java and iOS SDKs, completing its real-time state-sync layer for AI agent deployments.

◆ Current state

Ably has spent the past two months landing its LiveObjects feature—a path-based API for managing fast-changing shared state—across its major client SDKs. Java SDK v1.8.1 marks the last major platform leaving experimental, following the Cocoa/Swift SDK in early September. In parallel, the AI Transport JS SDK has grown Temporal workflow support and Vercel AI SDK v7 compatibility, and the Terraform provider reached v1.1.0 with significant new surface area including moderation rules and before-publish hooks.

◆ Where it's heading

Ably is building toward becoming the real-time infrastructure layer for agentic AI systems: LiveObjects handles shared state across multiple agents; the AI Transport SDK handles the run lifecycle (turn framing, Temporal orchestration); the new E2E encryption for annotation payloads closes a security gap in the model. The direction is away from general-purpose pub/sub toward targeted infrastructure that connects AI agents to each other and to human-facing interfaces.

◆ Prediction

The next likely move is developer experience work around multi-agent state coordination—LiveObjects is now stable but production wiring patterns are probably still rough. Expect documentation, example patterns, and possibly a managed agent-state abstraction built on top of the stable API.

R
Rootly
INFRA · APIS
6.3

Rootly's AI agent is going proactive — surfacing incident context before responders think to ask for it.

◆ Current state

Rootly has shipped a concentrated run of AI features that push the incident workflow from reactive tooling to ambient assistance. The agent now automatically posts relevant past incidents into the incident channel, transcribes calls with speaker labels in real time, operates on mobile without a laptop, and can sync service catalog data from GitHub and Backstage via CLI. Custom fields on action items unify the data model between incidents and the tasks generated from them.

◆ Where it's heading

The architectural direction is clear: Rootly is building an AI layer that works in the background throughout an incident — gathering evidence, matching patterns, transcribing conversation, surfacing historical context — so responders can focus on diagnosis rather than context assembly. The late-July observability stack connector (read-only access to code, infrastructure, feature flags, docs) is the data foundation; each successive release extends what the agent can observe and act on without prompting.

◆ Prediction

The logical next step is the agent moving from observation to recommendation — suggesting remediation steps or escalation paths based on the pattern-matched past incidents it's already surfacing. Automated post-incident summaries generated from Scribe transcripts and action item completion data are also within reach.

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.

See all Ably alternatives → · See all Rootly alternatives →

Recent activity from Ably and Rootly

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 1d agoAblyJava SDK v1.8.1: LiveObjects Stable Release
  2. 3d agoRootlyNever lose the call transcript.
  3. 4d agoAblyAbly Terraform Provider v1.1.0
  4. 9d agoAblyCocoa SDK v1.4.0: LiveObjects stable release
  5. 9d agoRootlyRelated Incidents detected automatically.
  6. 16d agoRootlyThe Rootly Agent is mobile.
  7. 19d agoAblyAbly-js v2.28.0: end to end encryption for annotation data payloads
  8. 19d agoAblyAI Transport JS SDK v0.8.0: Temporal plugin and Vercel AI SDK v7 support
  9. 22d agoAblyCapability semantics changes for `xxx:*` wildcard resources
  10. 24d agoRootlyCustom fields on Action items.
  11. 1mo agoRootlyMeeting Scribe speaks your language.
  12. 1mo agoRootlySync your catalog, and mute pages during Alert storms.

Frequently asked questions

What is the difference between Ably and Rootly?

They serve adjacent needs but don't currently overlap on shipped themes. Ably and Rootly are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). 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. Ably and Rootly are shipping at a similar cadence (velocity 6.3 vs 6.3, both within Sparkpulse's "active" band). 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.