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Comparison · Infra & APIs

Skipper vs Terragrunt

A side-by-side editorial comparison of Skipper and Terragrunt — release velocity, themes, recent moves, and the top alternatives to consider.

Skipper vs Terragrunt: at a glance

FeatureSkipperTerragrunt
SectorInfra & APIsInfra & APIs
Velocity score6.30.0
Sparks · 30d00
Top themesapi-gateway, http-proxy, rfc9421, performanceterraform, infrastructure-as-code, experiments, release-candidate
Last editorial update1h ago1mo ago
WebsiteVisit →Visit →

What is Skipper?

Skipper adds RFC 9421 HTTP Message Signatures and delivers 21% RouteGroup load time improvement

Skipper v0.27 is shipping at a steady maintenance cadence with two functional additions of note: v0.27.96 adds native RFC 9421 HTTP Message Signatures filter support — a 2023 IETF standard for request signing gaining traction in financial services and regulated APIs. v0.27.95 delivers a shared parse cache across RouteGroups, producing a measured 21% load time reduction, 12% lower memory, and 26% fewer allocations on a 200-RouteGroup benchmark.

Read the full Skipper trajectory →

What is Terragrunt?

Terragrunt graduated six experiments at once and has spent three candidates stabilising them

Terragrunt is running the v1.1.0 release-candidate cycle, now at rc3. The first candidate completed six experiments simultaneously — stack-dependencies, a content-addressable store, a catalog redesign, mark-many-as-read, opt-out-auth and DAG queue display. The two candidates since have added only bug fixes for those features plus improvements to how releases are published and verified.

Read the full Terragrunt trajectory →

Skipper vs Terragrunt: editorial side-by-side

S
Skipper
INFRA · APIS
6.3

Skipper adds RFC 9421 HTTP Message Signatures and delivers 21% RouteGroup load time improvement

◆ Current state

Skipper v0.27 is shipping at a steady maintenance cadence with two functional additions of note: v0.27.96 adds native RFC 9421 HTTP Message Signatures filter support — a 2023 IETF standard for request signing gaining traction in financial services and regulated APIs. v0.27.95 delivers a shared parse cache across RouteGroups, producing a measured 21% load time reduction, 12% lower memory, and 26% fewer allocations on a 200-RouteGroup benchmark.

◆ Where it's heading

Skipper is building out its security posture at the proxy layer: RFC 9421 request signing, Redis L2 cache (v0.27.92), and security header handling improvements (v0.27.88) suggest a consistent push toward production-grade security primitives without architectural breaks. The performance improvements in v0.27.95 address real-world Kubernetes clusters where large RouteGroup counts are common.

◆ Prediction

RFC 9421 support will likely get expanded configuration options — signing key rotation, policy enforcement modes, per-route key selection — as Zalando's internal adopters surface operational requirements for the filter.

T
Terragrunt
INFRA · APIS
0.0

Terragrunt graduated six experiments at once and has spent three candidates stabilising them

◆ Current state

Terragrunt is running the v1.1.0 release-candidate cycle, now at rc3. The first candidate completed six experiments simultaneously — stack-dependencies, a content-addressable store, a catalog redesign, mark-many-as-read, opt-out-auth and DAG queue display. The two candidates since have added only bug fixes for those features plus improvements to how releases are published and verified.

◆ Where it's heading

The experiment-graduation model is doing what it is supposed to: features developed behind flags land together in one minor, and the candidate cycle is purely stabilisation. The release-publishing and verification work appearing in rc2 suggests supply-chain provenance is being treated as release-blocking rather than as a follow-up.

◆ Prediction

With three candidates carrying identical feature lists, v1.1.0 final is the likely next release, followed by a fresh batch of experiments opening for v1.2.

Alternatives to Skipper and Terragrunt

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 Skipper or Terragrunt.

See all Skipper alternatives → · See all Terragrunt alternatives →

Recent activity from Skipper and Terragrunt

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 5h agoSkipperv0.27.97
  2. 7h agoSkipperSkipper adds native RFC 9421 HTTP Message Signatures filter
  3. 1d agoSkipperCross-RouteGroup parse cache cuts load time 21%, memory 12%
  4. 1d agoSkipperv0.27.94
  5. 1d agoSkipperv0.27.93
  6. 7d agoSkipperSkipper adds Redis as L2 cache storage alongside existing Valkey
  7. 2mo agoTerragruntv1.1.0-rc3
  8. 3mo agoTerragruntv1.1.0-rc2
  9. 3mo agoTerragruntv1.1.0-rc1

Frequently asked questions

What is the difference between Skipper and Terragrunt?

They serve adjacent needs but don't currently overlap on shipped themes. Skipper is currently shipping more aggressively (velocity 6.3 vs 0.0), with 0 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 Skipper better than Terragrunt?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Skipper is currently shipping more aggressively (velocity 6.3 vs 0.0), with 0 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 Skipper?

Top Skipper alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Skipper alternatives" section above for the current picks, or visit /alternatives/skipper for the full list with editorial commentary on each.

What are the best alternatives to Terragrunt?

Top Terragrunt alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Terragrunt alternatives" section above for the current picks, or visit /alternatives/terragrunt for the full list with editorial commentary on each.