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Comparison · Infra & APIs
Ably vs Incus
A side-by-side editorial comparison of Ably and Incus — release velocity, themes, recent moves, and the top alternatives to consider.
Ably vs Incus: at a glance
| Feature | Ably | Incus |
|---|---|---|
| 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 | container manager, near-live migration, secure boot, nvram |
| Last editorial update | 3d ago | 23d 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 Incus?
Incus 7.4 turns a year of migration plumbing into near-live migration that actually moves disks.
7.0.0 LTS became the supported baseline in May with 7.0.1 as its first patch, while the feature branch kept a roughly monthly cadence: 7.1 cleaned up issues the LTS surfaced, 7.2 added migration-compatible hypervisor flags for stateful migration, 7.3 shipped native Windows and macOS installers. 7.4 is the largest of them and the first with a headline capability — near-live migration implemented on both client and server, extended to dependent disks inside a cluster, with incremental memory migration made opt-in. Alongside it sit Secure Boot key management, a substantial NVRAM rework, librbd for all Ceph interactions, and disk and NIC burst limits.
Ably vs Incus: 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.
Incus
6.3INFRA · APIS
Incus 7.4 turns a year of migration plumbing into near-live migration that actually moves disks.
◆ Current state
7.0.0 LTS became the supported baseline in May with 7.0.1 as its first patch, while the feature branch kept a roughly monthly cadence: 7.1 cleaned up issues the LTS surfaced, 7.2 added migration-compatible hypervisor flags for stateful migration, 7.3 shipped native Windows and macOS installers. 7.4 is the largest of them and the first with a headline capability — near-live migration implemented on both client and server, extended to dependent disks inside a cluster, with incremental memory migration made opt-in. Alongside it sit Secure Boot key management, a substantial NVRAM rework, librbd for all Ceph interactions, and disk and NIC burst limits.
◆ Where it's heading
Migration has been the through-line for three releases and 7.4 is where it becomes a feature rather than plumbing. The pattern is consistent: 7.2 made stateful migration survive non-identical hosts, 7.4 makes moving an instance cheap enough to do routinely, including the storage that hangs off it. Around that, the VM side is maturing toward parity with commercial hypervisors — firmware key management, NVRAM control, per-device rate limits — which is the surface that decides whether Incus is usable as a datacentre hypervisor rather than a container manager that also runs VMs.
◆ Prediction
Expect the next release to harden near-live migration rather than replace it — the evacuation and cluster-recovery fixes already threaded through 7.4 suggest the gaps are in cluster-wide orchestration, not the transfer itself.
Alternatives to Ably and Incus
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 Incus.
Jackett
Jackett ships daily tracker maintenance with no architectural changes in sight.
Skipper
Skipper adds native RFC 9421 HTTP Message Signatures while shipping multiple patch releases per day
GitHub
Copilot doubles down on agentic workflows as GitHub phases out older AI models
Infisical
Infisical launches Agent Vault: credential-free secret injection for AI agents.
Railway
Railway GA's Sandboxes, ships one-click Postgres major upgrades, and lets anyone deploy without an account — a PaaS going full agent-native.
Recent activity from Ably and Incus
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoAbly.NET SDK cuts reconnection wait from 120s to ~25s, corrects connection state edge cases
- 10d agoAblyJava SDK v1.8.1: LiveObjects Stable Release ⚡
- 13d agoAblyTerraform Provider adds moderation rules, data sources, and config importer tool
- 18d agoAblyCocoa SDK v1.4.0: LiveObjects stable release
- 24d agoIncusIncus 7.4 adds near-live migration and Secure Boot key management ⚡
- 28d agoAblyAbly-js v2.28.0: end to end encryption for annotation data payloads
- 28d agoAblyAI Transport JS SDK v0.8.0: Temporal plugin and Vercel AI SDK v7 support ⚡
- 1mo agoIncusNative Windows and macOS installers; QMP command timeouts
- 2mo agoIncusFirst patch release on the 7.0 LTS branch
- 2mo agoIncusMigration-compatible hypervisor flags for stateful migration
- 3mo agoIncusFixes for issues surfaced by the 7.0 release
- 4mo agoIncusIncus 7.0 LTS, with runtime-detected QEMU feature gating
Frequently asked questions
What is the difference between Ably and Incus?
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 Incus?
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 Incus?
Top Incus alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Incus alternatives" section above for the current picks, or visit /alternatives/incus for the full list with editorial commentary on each.