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Comparison · Infra & APIs
Inspektor Gadget vs Gloo Gateway
A side-by-side editorial comparison of Inspektor Gadget and Gloo Gateway — release velocity, themes, recent moves, and the top alternatives to consider.
Inspektor Gadget vs Gloo Gateway: at a glance
What is Inspektor Gadget?
The eBPF observability tool just started reaching for the GPU.
Inspektor Gadget ships a feature release roughly monthly with bugfix releases in between, and the recent line has been steady kernel-side expansion: new gadgets, more eBPF program types, better stack symbolization. v0.55.0 breaks that pattern by adding initial GPU telemetry — a userspace daemon called gpu-ebpf-bridge that publishes GPU data through pinned BPF maps so gadgets can consume it. The rest of the release is the usual widening of eBPF surface plus stability work for high-churn nodes.
What is Gloo Gateway?
One status-churn fix, shipped to four maintenance branches inside forty minutes.
Gloo maintains four release lines at once — 1.18, 1.19, 1.20 and 1.21 — plus a 1.22 beta series, and fixes are fanned across all of them together. On 5 August, v1.18.41, v1.19.20, v1.20.22 and v1.21.13 were cut within forty-five minutes of each other carrying the same Kubernetes Gateway report-churn fix and the same Go, gRPC and kubectl dependency bumps.
Inspektor Gadget vs Gloo Gateway: editorial side-by-side
Inspektor Gadget
6.3INFRA · APIS
The eBPF observability tool just started reaching for the GPU.
◆ Current state
Inspektor Gadget ships a feature release roughly monthly with bugfix releases in between, and the recent line has been steady kernel-side expansion: new gadgets, more eBPF program types, better stack symbolization. v0.55.0 breaks that pattern by adding initial GPU telemetry — a userspace daemon called gpu-ebpf-bridge that publishes GPU data through pinned BPF maps so gadgets can consume it. The rest of the release is the usual widening of eBPF surface plus stability work for high-churn nodes.
◆ Where it's heading
Two directions run in parallel. The kernel-side surface keeps growing — SockOps, SkSKB and SkMsg program types, map pinning, non-destructive map iteration, OTel and Python stack symbolization — which makes the tool a more general eBPF runtime rather than a fixed set of gadgets. Meanwhile the output side is becoming opinionated about ecosystems it serves: v0.54.0 taught advise_networkpolicy to emit Cilium NetworkPolicy resources alongside Kubernetes ones. GPU telemetry extends the first direction past the boundary eBPF normally stops at.
◆ Prediction
The GPU work is explicitly described as an initial design laying groundwork, so expect the next releases to build actual gadgets on top of the bridge rather than to expand it further; the pinned-map plumbing added in the same release is what those gadgets would consume.
Gloo Gateway
5.0INFRA · APIS
One status-churn fix, shipped to four maintenance branches inside forty minutes.
◆ Current state
Gloo maintains four release lines at once — 1.18, 1.19, 1.20 and 1.21 — plus a 1.22 beta series, and fixes are fanned across all of them together. On 5 August, v1.18.41, v1.19.20, v1.20.22 and v1.21.13 were cut within forty-five minutes of each other carrying the same Kubernetes Gateway report-churn fix and the same Go, gRPC and kubectl dependency bumps.
◆ Where it's heading
The recurring theme is translation correctness under Kubernetes Gateway API — specifically, bugs where the translator's internal state does not behave the way its callers assume. The report-churn fix found equality checks comparing maps of pointer values, so identical output registered as changed on every recompute. The delegateOptions fix in beta11 found RouteOptions assigned by reference from the snapshot, so merging parent Virtual Service options mutated shared protos and contaminated every other route for the rest of the cycle. Both ship with the same instinct for caution: the second one is gated behind GLOO_ISOLATE_DELEGATE_ROUTE_OPTIONS so operators can revert.
◆ Prediction
The 1.22 beta line will keep collecting Gateway API translation fixes ahead of a stable release, and each one that matters will be backported across all four maintenance branches on the same day, as this window shows twice.
Alternatives to Inspektor Gadget and Gloo Gateway
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 Inspektor Gadget or Gloo Gateway.
Pressable
Ten days of bulk operations, then the AI assistant got the keys to multi-site access control.
Dependency-Track
A v5 release candidate train carrying a database migrator that has to work on the first try.
rsyslog
The syslog daemon is quietly becoming an OpenTelemetry-era pipeline, YAML config and all.
Contour
Three supported branches, patched in lockstep within the same minute.
HAProxy Kubernetes Ingress Controller
The changelog is a raw commit log, and its severity tags tell you more than the prose would.
See all Inspektor Gadget alternatives → · See all Gloo Gateway alternatives →
Recent activity from Inspektor Gadget and Gloo Gateway
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoGloo GatewayGloo 1.20.22 stops no-op Kubernetes Gateway report churn
- 2d agoGloo GatewayGloo 1.21.13 adds hostRewriteLiteral, reverts admission validation
- 2d agoGloo GatewayGloo 1.18.41 backports the Gateway report-churn fix
- 2d agoGloo GatewayGloo 1.19.20 backports the Gateway report-churn fix
- 4d agoInspektor GadgetInspektor Gadget v0.55.0 opens a GPU telemetry bridge ⚡
- 5d agoGloo GatewayGloo 1.22.0-beta12 adds hostRewriteLiteral to shadowing
- 7d agoGloo GatewayGloo 1.22.0-beta11 isolates delegated RouteOptions before merging
- 25d agoInspektor GadgetRelease v0.54.1
- 1mo agoInspektor GadgetInspektor Gadget v0.54.0 generates Cilium NetworkPolicies
- 1mo agoInspektor GadgetRelease v0.53.2
- 2mo agoInspektor GadgetRelease v0.53.1
- 2mo agoInspektor GadgetInspektor Gadget v0.53.0 adds the trace_link gadget
Frequently asked questions
What is the difference between Inspektor Gadget and Gloo Gateway?
They serve adjacent needs but don't currently overlap on shipped themes. Inspektor Gadget 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 Inspektor Gadget better than Gloo Gateway?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Inspektor Gadget 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 Inspektor Gadget?
Top Inspektor Gadget alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Inspektor Gadget alternatives" section above for the current picks, or visit /alternatives/inspektor-gadget for the full list with editorial commentary on each.
What are the best alternatives to Gloo Gateway?
Top Gloo Gateway alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Gloo Gateway alternatives" section above for the current picks, or visit /alternatives/gloo for the full list with editorial commentary on each.