OpenStatus
OpenStatus scopes API keys per resource and lets its MCP server set up monitors.
Comparison · Infra & APIs
Gloo Gateway vs Scalar
A side-by-side editorial comparison of Gloo Gateway and Scalar — release velocity, themes, recent moves, and the top alternatives to consider.
Gloo Gateway vs Scalar: at a glance
What is Gloo Gateway?
Gloo Gateway 1.20.29 stops a failed restart from wiping every Envoy's config
Gloo Gateway keeps maintaining 1.19, 1.20 and 1.21 in parallel. The 1.20.29 release fixes a failure where, after a gloo restart, a failed first reconcile sent every connected Envoy an empty config; it also keeps the in-memory Proxy store across setup re-runs and delays setup restarts until the first xDS sync. The 21 October batch had fixed proxies stuck on stale endpoints.
What is Scalar?
Scalar's November 5 releases give each API document its own authentication settings
Scalar ships several package lines on separate version tracks. The November 5 API reference releases (1.77.0 and the ASP.NET Core 1.1.47) let each document carry its own authentication defaults, render specification extensions, and make search much faster on interconnected schemas. The mock server gained an onResponse hook and spec-correct path matching, and the API client hardened its CORS proxy against XSS and open redirects. The SDK generator now emits experimental signed-URL methods across ten languages and sends only the credentials each operation requires.
Gloo Gateway vs Scalar: editorial side-by-side
Gloo Gateway
5.0INFRA · APIS
Gloo Gateway 1.20.29 stops a failed restart from wiping every Envoy's config
◆ Current state
Gloo Gateway keeps maintaining 1.19, 1.20 and 1.21 in parallel. The 1.20.29 release fixes a failure where, after a gloo restart, a failed first reconcile sent every connected Envoy an empty config; it also keeps the in-memory Proxy store across setup re-runs and delays setup restarts until the first xDS sync. The 21 October batch had fixed proxies stuck on stale endpoints.
◆ Where it's heading
Recent work concentrates on control-plane failure modes: what Envoy receives when gloo restarts, reconciles badly or sends mismatched endpoint data. Each fix is backported across the supported lines alongside routine Go and dependency bumps.
◆ Prediction
The 1.21 and 1.19 backports of the empty-snapshot fix are the likely next entries, following the same-day batch pattern.
Scalar
5.0INFRA · APIS
Scalar's November 5 releases give each API document its own authentication settings
◆ Current state
Scalar ships several package lines on separate version tracks. The November 5 API reference releases (1.77.0 and the ASP.NET Core 1.1.47) let each document carry its own authentication defaults, render specification extensions, and make search much faster on interconnected schemas. The mock server gained an onResponse hook and spec-correct path matching, and the API client hardened its CORS proxy against XSS and open redirects. The SDK generator now emits experimental signed-URL methods across ten languages and sends only the credentials each operation requires.
◆ Where it's heading
The reference renderer is in a polish phase after October's localhost toolbar and hosting waitlist, while the SDK generator is where breadth is growing fastest. Signed URLs, idempotency keys and per-operation credentials show Scalar chasing parity with dedicated SDK vendors across many languages.
◆ Prediction
The hosting waitlist has gone quiet in these notes; the clearest near-term pattern is signed-URL methods leaving experimental status and reaching the remaining SDK targets.
Alternatives to Gloo Gateway and Scalar
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 Gloo Gateway or Scalar.
Hoppscotch
Hoppscotch adds an enterprise cloud tier and an AI assistant, then turns to desktop trust.
Grype
Grype keeps tightening match accuracy while making its database diff tool usable at scale
AdGuard Home
AdGuard Home's 1.0 beta matches stable's security fixes and reworks client settings
Snort 3
Snort 3.13.2 is a broad bounds-checking sweep across SMB, HTTP and industrial protocol parsers
DNSimple
DNSimple's origin name servers answer a quarter faster at p90 after erldns work
See all Gloo Gateway alternatives → · See all Scalar alternatives →
Recent activity from Gloo Gateway and Scalar
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoScalarAPI Reference 1.77: per-document auth and faster search
- 1d agoScalarAPI client 0.12.50 hardens the CORS proxy
- 1d agoScalarASP.NET Core 1.1.47: per-document auth and body reset
- 1d agoScalarMock server 0.21: onResponse hook and spec-correct path matching
- 2d agoScalarSDK generator 0.38: per-operation credentials, better naming
- 3d agoGloo Gateway1.20.29: failed reconcile no longer empties Envoy configs
- 5d agoScalarSDK generator 0.37.1: signed URLs in ten languages
- 16d agoGloo GatewayFix for proxies stuck on stale endpoints; Go 1.26.10
- 16d agoGloo Gateway1.20 backport of the stale-endpoint fix; Go 1.26.10
- 16d agoGloo Gateway1.19 backport of the stale-endpoint fix; Go 1.26.10
- 22d agoGloo Gateway1.20.27 bumps Go to 1.26.9
- 22d agoGloo Gateway1.21.18 bumps Go to 1.26.9
Frequently asked questions
What is the difference between Gloo Gateway and Scalar?
They serve adjacent needs but don't currently overlap on shipped themes. Gloo Gateway and Scalar 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 Gloo Gateway better than Scalar?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Gloo Gateway and Scalar 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 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.
What are the best alternatives to Scalar?
Top Scalar alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Scalar alternatives" section above for the current picks, or visit /alternatives/scalar for the full list with editorial commentary on each.