Stytch
Now inside Twilio, Stytch's independent cadence has slowed to a trickle.
Comparison · Infra & APIs
Knock vs Ably
A side-by-side editorial comparison of Knock and Ably — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:developer-experience
Knock vs Ably: at a glance
| Feature | Knock | Ably |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 6.3 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | notifications-infrastructure, agentic-workflows, integrations, developer-experience | realtime-infrastructure, ai-transport, sdk-releases, pub-sub |
| Last editorial update | 2d ago | 1d ago |
| Website | — | — |
What is Knock?
Knock pushes an AI agent over its notification stack, from CLI to Slack.
Knock is a developer-first notifications platform, and its recent releases split between hardening the core (MFA, test-runner sandbox mode) and pushing an agent-driven control layer over notification workflows. Teams can now build, trigger, and manage engagement resources from an AI agent — in the dashboard, CLI, or Slack — rather than only through code.
What is Ably?
Ably is bending its realtime stack toward AI-agent transport
Ably keeps shipping across its full SDK matrix — JS, Cocoa, Dart, Chat — while concentrating its newest energy on an AI Transport JS SDK that has moved from v0.2 to v0.4 in under two months. The core Pub/Sub and LiveObjects surfaces get steady maintenance plus new dashboard visibility work.
Knock vs Ably: editorial side-by-side
Knock
6.3INFRA · APIS
Knock pushes an AI agent over its notification stack, from CLI to Slack.
◆ Current state
Knock is a developer-first notifications platform, and its recent releases split between hardening the core (MFA, test-runner sandbox mode) and pushing an agent-driven control layer over notification workflows. Teams can now build, trigger, and manage engagement resources from an AI agent — in the dashboard, CLI, or Slack — rather than only through code.
◆ Where it's heading
The throughline is making notification operations conversational and self-serve: agent skills, dynamic audiences buildable by an agent, a hosted preference center non-engineers can configure, and now the agent inside Slack. Knock is widening who can operate the system beyond developers while keeping its API-first core.
◆ Prediction
Expect the agent surface to keep expanding — more data sources beyond Shopify and deeper agent actions — pulling notification configuration out of code and into conversation and the dashboard.
Ably
5.0INFRA · APIS
Ably is bending its realtime stack toward AI-agent transport
◆ Current state
Ably keeps shipping across its full SDK matrix — JS, Cocoa, Dart, Chat — while concentrating its newest energy on an AI Transport JS SDK that has moved from v0.2 to v0.4 in under two months. The core Pub/Sub and LiveObjects surfaces get steady maintenance plus new dashboard visibility work.
◆ Where it's heading
The AI Transport SDK is where Ably is placing its directional bet: session/run models, branching conversations, human-in-the-loop handoff, and now external data hydration all point at owning the realtime layer for agent applications. In parallel the mainline JS client is formalizing React-first ergonomics and deprecating its v1 callback API.
◆ Prediction
Expect the AI Transport SDK to hold its rapid cadence toward a 1.0, and the newly released Dart SDK to follow the same early-adoption-to-stable path.
Alternatives to Knock and Ably
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 Knock or Ably.
Resend
Resend ships a tight, frequent changelog: richer email content and deeper dev-tool reach
Unleash
Unleash reframes feature flags as agentic 'runtime control,' aimed straight at LaunchDarkly.
ToolJet
ToolJet widens its data-source layer — AI sources included — on a fast LTS/beta release train.
GitHub
GitHub bends toward enterprise AI governance while retiring its standalone Models offering.
Bugsnag
BugSnag is compounding on mobile observability and AI-assisted debugging
Recent activity from Knock and Ably
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoAblyAbly AI Transport SDK adds external data hydration
- 3d agoKnockTest runner improvements
- 4d agoKnockMulti-factor authentication
- 10d agoAblyCocoa SDK fixes push registration after reboot
- 14d agoAblyAbly AI Transport SDK moves to declarative codecs
- 14d agoAblyJS SDK React hooks infer channel from ChannelProvider
- 21d agoKnockPreference center
- 24d agoAblyImproved visibility into LiveObjects
- 25d agoAblyJS SDK patch restores mockable v1 callback types
- 29d agoKnockNew partial input types
- 1mo agoKnockKnock agent for Slack ⚡
- 1mo agoKnockShopify data source
Frequently asked questions
What is the difference between Knock and Ably?
Both compete on the same themes — developer-experience — within Infra & APIs. Knock is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 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 Knock better than Ably?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Knock is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 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 Knock?
Top Knock alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Knock alternatives" section above for the current picks, or visit /alternatives/knock for the full list with editorial commentary on each.
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.