Depot
Depot is growing from a build accelerator into an integrated CI and source-control platform on its own compute.
Comparison · Infra & APIs
Ably vs Cursor
A side-by-side editorial comparison of Ably and Cursor — release velocity, themes, recent moves, and the top alternatives to consider.
Ably vs Cursor: at a glance
| Feature | Ably | Cursor |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 5.0 | 6.3 |
| Sparks · 30d | 0 | 1 |
| Top themes | realtime, ai-agents, sdk, durable-execution | ai-coding, agents, cloud-agents, mcp |
| Last editorial update | 1d ago | 1h ago |
| Website | — | — |
What is Ably?
Ably is spinning up an AI-agent transport layer at 0.x speed
Ably is iterating hard on a new AI Transport SDK — four releases (0.2 through 0.5) in about a month — aimed at making agent conversations durable, resumable, and branchable over its realtime channels. Alongside it, the core Pub/Sub and Chat SDKs keep getting steady, mostly incremental maintenance: React hook ergonomics, presence reliability fixes, and better LiveObjects visibility in the dashboard.
What is Cursor?
Cursor is turning its editor into an orchestration layer for always-on cloud agents.
Cursor has moved well past autocomplete into orchestrating fleets of agents. The Agents Window, isolated cloud VMs, and now a mobile app let users launch, monitor, and remote-control long-running agents from anywhere, while a Customize page and team marketplace govern the plugins, skills, and MCPs those agents use.
Ably vs Cursor: editorial side-by-side
Ably
5.0INFRA · APIS
Ably is spinning up an AI-agent transport layer at 0.x speed
◆ Current state
Ably is iterating hard on a new AI Transport SDK — four releases (0.2 through 0.5) in about a month — aimed at making agent conversations durable, resumable, and branchable over its realtime channels. Alongside it, the core Pub/Sub and Chat SDKs keep getting steady, mostly incremental maintenance: React hook ergonomics, presence reliability fixes, and better LiveObjects visibility in the dashboard.
◆ Where it's heading
The AI Transport line is the story. Each release layers on capability that matters for production agents — declarative codecs, external data hydration, and now durable execution that survives process restarts inside frameworks like Temporal and Vercel's WDK. Ably is positioning its realtime infrastructure as the transport substrate for AI agents, not just chat and pub/sub, while keeping the mature core SDKs stable. The frequent breaking changes signal a product still finding its API shape.
◆ Prediction
Expect the AI Transport SDK to keep its fast breaking-change cadence toward a 1.0 with a stabilized session/run API, and likely SDKs beyond JS as the surface settles. The entries don't yet indicate a GA date.
Cursor
6.3INFRA · APIS
Cursor is turning its editor into an orchestration layer for always-on cloud agents.
◆ Current state
Cursor has moved well past autocomplete into orchestrating fleets of agents. The Agents Window, isolated cloud VMs, and now a mobile app let users launch, monitor, and remote-control long-running agents from anywhere, while a Customize page and team marketplace govern the plugins, skills, and MCPs those agents use.
◆ Where it's heading
The direction is agents that run untethered — in the cloud, on mobile, on schedules and triggers — with the IDE becoming a control surface rather than the place work happens. Enterprise controls (team MCPs, org-group marketplaces, reusable cloud environments) are being layered on to make that safe at team scale.
◆ Prediction
Expect deeper background-automation surfaces (more triggers, computer use) and tighter governance around distributed agents; the mobile app signals Cursor wants agents launchable and reviewable entirely away from the desktop.
Alternatives to Ably and Cursor
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 Cursor.
Retool
Retool adds Claude Fable 5 as it tightens self-hosted and enterprise controls
Rootly
Rootly is wiring an AI agent into every surface of incident response.
GitHub
GitHub bends Copilot toward multi-model routing and enterprise control.
Knock
Knock is stacking enterprise controls and data portability onto its notification backbone.
Auth0
Auth0's cadence is all enterprise plumbing: federation, SCIM provisioning, session governance.
Recent activity from Ably and Cursor
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 20h agoCursor# Side chats
- 1d agoAblyAI Transport SDK 0.5.0: durable execution for agents
- 1d agoAblyAI Transport JS SDK v0.5.0: Durable execution support through Steps
- 9d agoAblyAI Transport SDK 0.4.0: external data hydration
- 9d agoAblyAI Transport JS SDK v0.4.0: External data hydration support
- 10d agoCursor# Team MCPs in team marketplaces
- 11d agoCursor# Cloud agents on mobile ⚡
- 17d agoAblyCocoa SDK: push registration fix before first unlock
- 18d agoCursor# Marketplace leaderboard
- 21d agoAblyAI Transport JS SDK v0.3.0: Improved codec authoring, Presence and LiveObjects pass-through
- 22d agoCursor# /automate skill
- 23d agoCursor# Cloud environment setup
Frequently asked questions
What is the difference between Ably and Cursor?
They serve adjacent needs but don't currently overlap on shipped themes. Cursor 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 Cursor?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Cursor 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 Cursor?
Top Cursor alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Cursor alternatives" section above for the current picks, or visit /alternatives/cursor for the full list with editorial commentary on each.