ESPHome
ESPHome 2026.10.0 lands after six betas of audio, memory and ESP-IDF 6.1 work.
Comparison · Infra & APIs
Dragonfly vs Knock
A side-by-side editorial comparison of Dragonfly and Knock — release velocity, themes, recent moves, and the top alternatives to consider.
Dragonfly vs Knock: at a glance
| Feature | Dragonfly | Knock |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 5.0 | 5.0 |
| Sparks · 30d | 0 | 0 |
| Top themes | in-memory datastore, clustering, data consistency, performance | notifications, developer tools, workflow debugging, ai integrations |
| Last editorial update | 1h ago | 1h ago |
| Website | Visit → | — |
What is Dragonfly?
Dragonfly fixes dropped writes during slot migration and rebalances slot-based sharding.
Dragonfly is maintaining two incremental lines, 1.40 and 2.0, with small, targeted releases. The 2.0 line fixed a slot-migration bug that silently dropped journal writes into empty buckets and changed experimental slot-based sharding to Fibonacci hashing so keys spread evenly. The 1.40 line received BLMOVE and Sidekiq queue-placement optimizations.
What is Knock?
Knock adds single-step test runs and retries for failed workflow runs.
Knock is a notification infrastructure platform that spent September and October wiring itself into AI assistants (Claude, ChatGPT/Codex, Cursor) and Stripe Projects. Its latest two releases turn to the workflow debugger: a failed run can now be retried from where it stopped, and a single channel step can be tested in sandbox without running the whole workflow.
Dragonfly vs Knock: editorial side-by-side
Dragonfly
5.0INFRA · APIS
Dragonfly fixes dropped writes during slot migration and rebalances slot-based sharding.
◆ Current state
Dragonfly is maintaining two incremental lines, 1.40 and 2.0, with small, targeted releases. The 2.0 line fixed a slot-migration bug that silently dropped journal writes into empty buckets and changed experimental slot-based sharding to Fibonacci hashing so keys spread evenly. The 1.40 line received BLMOVE and Sidekiq queue-placement optimizations.
◆ Where it's heading
Most of the work is in cluster mode: migrations, slot placement and topology replies. That suggests the 2.x line is being hardened for multi-node deployments, while 1.40 still gets backports and small performance fixes.
◆ Prediction
The slot-based sharding flag looks likely to stay experimental for a while, with more balancing and migration fixes before it becomes a default.
Knock
5.0INFRA · APIS
Knock adds single-step test runs and retries for failed workflow runs.
◆ Current state
Knock is a notification infrastructure platform that spent September and October wiring itself into AI assistants (Claude, ChatGPT/Codex, Cursor) and Stripe Projects. Its latest two releases turn to the workflow debugger: a failed run can now be retried from where it stopped, and a single channel step can be tested in sandbox without running the whole workflow.
◆ Where it's heading
With distribution through AI tools in place, Knock is now improving the day-to-day build-and-debug loop for workflows, following the September analytics tab. The pattern points to more operational tooling around runs, not new channels.
◆ Prediction
Expect further debugger and test-runner features, such as bulk retries or replays with edited data, given two debugging releases in three days.
Alternatives to Dragonfly and Knock
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 Dragonfly or Knock.
Cronicle
Cronicle keeps patching vulnerable dependencies, two more bumps in three days.
Retool
Retool's week is security disclosures and patch trains after a fast run of model launches.
Sonarr
Sonarr 5.0 builds add Trakt Smart Lists, OIDC Remember Me and more accessibility fixes.
Redocly
Redocly keeps Reunite project sign-ins alive for 30 days and hardens Visual review login.
Bytebase
Bytebase lets MCP agents request and approve database access, with the user confirming.
See all Dragonfly alternatives → · See all Knock alternatives →
Recent activity from Dragonfly and Knock
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoKnockRun a single workflow step
- 4d agoDragonflyi1.40.13: Sidekiq queues placed on the same shard
- 5d agoDragonflyi2.0.5: Fibonacci hashing evens out slot-based sharding
- 5d agoDragonflyi1.40.12: single-shard BLMOVE completes in one hop
- 5d agoDragonflyi2.0.4: slot migration no longer drops writes to empty buckets
- 6d agoDragonflyi2.0.3: storage read-lifetime fix backported
- 6d agoDragonflyi1.40.11: storage read-lifetime fix backported
- 6d agoKnockRetry failed workflow runs
- 10d agoKnockStripe Projects integration
- 20d agoKnockModel selection in the Knock agent
- 27d agoKnockWorkflow + broadcast analytics
- 1mo agoKnockCursor plugin for Knock
Frequently asked questions
What is the difference between Dragonfly and Knock?
They serve adjacent needs but don't currently overlap on shipped themes. Dragonfly and Knock are shipping at a similar cadence (velocity 5.0 vs 5.0, 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 Dragonfly better than Knock?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Dragonfly and Knock are shipping at a similar cadence (velocity 5.0 vs 5.0, 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 Dragonfly?
Top Dragonfly alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Dragonfly alternatives" section above for the current picks, or visit /alternatives/dragonfly for the full list with editorial commentary on each.
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.