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Comparison · Infra & APIs
Ably vs Dragonfly
A side-by-side editorial comparison of Ably and Dragonfly — release velocity, themes, recent moves, and the top alternatives to consider.
Ably vs Dragonfly: at a glance
| Feature | Ably | Dragonfly |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 7.5 | 6.3 |
| Sparks · 30d | 2 | 1 |
| Top themes | liveobjects, ai-transport-sdk, realtime-state-sync, durable-agents | redis-compatible, in-memory-database, memory-management, performance |
| Last editorial update | 7h ago | 9d ago |
| Website | — | Visit → |
What is Ably?
Ably ships LiveObjects as production-ready and expands its AI Transport SDK to cover Temporal durable workflows.
Ably is shipping simultaneously across infrastructure SDKs and AI-specific capabilities. LiveObjects — a real-time state sync layer for nested maps and counters — graduated from experimental to production-stable in the Java and Cocoa SDKs this month, with path-based access and resilient subscriptions that survive underlying object replacement. The AI Transport SDK gained Temporal durable-workflow support and OpenAI Responses API streaming. On the infrastructure side, the .NET SDK reduces reconnect latency from 120s to ~25s and the Terraform provider got a major maturity pass with moderation rules and a config importer.
What is Dragonfly?
Dragonfly tags v2.0.0 while hardening memory accounting and patching a HyperLogLog CVE across the 1.x line
Dragonfly is shipping across two concurrent tracks: the 1.40.x stable line is receiving steady improvements to connection memory accounting correctness, tiering metrics, and Redis ecosystem compatibility (RedisShake RDB format), while v2.0.0 has been tagged. The 2.0.0 entry's visible content is minimal — scope-based memory tracking is added but disabled — suggesting 2.0.0 is an architectural milestone marker for accumulated work rather than a single user-visible feature introduction.
Ably vs Dragonfly: editorial side-by-side
Ably
7.5INFRA · APIS
Ably ships LiveObjects as production-ready and expands its AI Transport SDK to cover Temporal durable workflows.
◆ Current state
Ably is shipping simultaneously across infrastructure SDKs and AI-specific capabilities. LiveObjects — a real-time state sync layer for nested maps and counters — graduated from experimental to production-stable in the Java and Cocoa SDKs this month, with path-based access and resilient subscriptions that survive underlying object replacement. The AI Transport SDK gained Temporal durable-workflow support and OpenAI Responses API streaming. On the infrastructure side, the .NET SDK reduces reconnect latency from 120s to ~25s and the Terraform provider got a major maturity pass with moderation rules and a config importer.
◆ Where it's heading
The direction is Ably as AI agent infrastructure. LiveObjects' own documentation positions it explicitly for 'AI agents, live configurations, and collaborative experiences.' The AI Transport SDK is a purpose-built layer for agentic workflows — durable sessions, multi-turn conversations, tool execution — layered on Ably's realtime primitives. This is a deliberate expansion from realtime messaging platform into the transport layer that agents run on.
◆ Prediction
The AI Transport SDK will add more model provider codecs — the OpenAI Responses integration suggests Anthropic or Gemini support is next. LiveObjects needs to reach stable across remaining SDKs (Python, .NET) before the feature can be adopted uniformly.
Dragonfly
6.3INFRA · APIS
Dragonfly tags v2.0.0 while hardening memory accounting and patching a HyperLogLog CVE across the 1.x line
◆ Current state
Dragonfly is shipping across two concurrent tracks: the 1.40.x stable line is receiving steady improvements to connection memory accounting correctness, tiering metrics, and Redis ecosystem compatibility (RedisShake RDB format), while v2.0.0 has been tagged. The 2.0.0 entry's visible content is minimal — scope-based memory tracking is added but disabled — suggesting 2.0.0 is an architectural milestone marker for accumulated work rather than a single user-visible feature introduction.
◆ Where it's heading
The project's operational focus is sharpening around production reliability and Redis compatibility: O(1) connection memory tracking, per-shard tiering metrics, CVE-2025-32023 remediation in HyperLogLog, and AVX2/NEON SIMD acceleration for dense HLL operations (8-29x measured gains). The staged 2.0.0 release and the disabled scope-based memory tracking point to Dragonfly building toward granular per-connection memory visibility as a differentiating feature for operators running large clusters.
◆ Prediction
Scope-based memory tracking will be re-enabled in a near-term 2.x patch — the code is already shipped in 2.0.0, just gated off. That re-enable will be the actual headline for what 2.0.0 unlocks operationally.
Alternatives to Ably and Dragonfly
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 Dragonfly.
ToolJet
ToolJet bundles MCP into its EE image and adds PAT auth, making the AI builder addressable by external agents
GitHub
GitHub meters agentic CLI extensions as Copilot enterprise governance tightens
Jackett
Jackett ships near-daily releases keeping its tracker catalog current with domain migrations and category fixes.
Buildkite
Buildkite ships Agent v4 after eight years and lands a VS Code extension, reshaping CI as IDE infrastructure.
authentik
authentik 2026.8.0 ships an Agent for machine identity and domain join, then enters rapid patch mode.
See all Ably alternatives → · See all Dragonfly alternatives →
Recent activity from Ably and Dragonfly
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoAbly.NET SDK cuts reconnection wait from 120s to ~25s, corrects connection state edge cases
- 7d agoAblyJava SDK v1.8.1: LiveObjects Stable Release ⚡
- 9d agoDragonflyDragonfly v2.0.0: major version milestone with scope-based memory tracking staged ⚡
- 10d agoAblyTerraform Provider adds moderation rules, data sources, and config importer tool
- 12d agoDragonflyi1.40.8: fix(server): make connection memory accounting constant time (#8245)
- 14d agoDragonflyFix RDB listpack compatibility with RedisShake migrations
- 15d agoAblyCocoa SDK v1.4.0: LiveObjects stable release
- 25d agoAblyAbly-js v2.28.0: end to end encryption for annotation data payloads
- 25d agoAblyAI Transport JS SDK v0.8.0: Temporal plugin and Vercel AI SDK v7 support ⚡
- 1mo agoDragonflyTiering: unified pending-bytes limit and metrics export
- 1mo agoDragonflyi1.40.2: backport: mem accounting fix, journal flushslots in tx (#8061)
- 1mo agoDragonflyHyperLogLog: CVE-2025-32023 patch, SIMD acceleration (8-29x), and three correctness fixes ⚡
Frequently asked questions
What is the difference between Ably and Dragonfly?
They serve adjacent needs but don't currently overlap on shipped themes. Ably is currently shipping more aggressively (velocity 7.5 vs 6.3), with 2 editorial sparks in the last 30 days against 1. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Ably better than Dragonfly?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Ably is currently shipping more aggressively (velocity 7.5 vs 6.3), with 2 editorial sparks in the last 30 days against 1. 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 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.