k0s
k0s ships another four-branch patch round, with an IPv6 service CIDR fix on 1.37 and 1.36.
Comparison · Infra & APIs
cert-manager vs Gloo Gateway
A side-by-side editorial comparison of cert-manager and Gloo Gateway — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:reliability
cert-manager vs Gloo Gateway: at a glance
What is cert-manager?
cert-manager's 1.21 line is about failure handling: backoff caps, renewal policies and clearer auth errors
cert-manager is running the 1.21 pre-release train through alpha.0, alpha.1 and now beta.0. The changes cluster around what happens when certificate issuance goes wrong: a configurable cap on CertificateRequest retry backoff, a new AuthFailed issuer condition that separates bad Venafi credentials from transient infrastructure failures, and certificate renewal policies.
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.
cert-manager vs Gloo Gateway: editorial side-by-side
cert-manager
0.0INFRA · APIS
cert-manager's 1.21 line is about failure handling: backoff caps, renewal policies and clearer auth errors
◆ Current state
cert-manager is running the 1.21 pre-release train through alpha.0, alpha.1 and now beta.0. The changes cluster around what happens when certificate issuance goes wrong: a configurable cap on CertificateRequest retry backoff, a new AuthFailed issuer condition that separates bad Venafi credentials from transient infrastructure failures, and certificate renewal policies.
◆ Where it's heading
This is a reliability and observability cycle rather than a feature cycle. The recurring theme is making cert-manager's failure states legible — distinguishing permanent from transient errors, bounding retry storms, and letting Helm's common labels propagate into the ACME solver resources it creates on the fly. CAInjectorMerging reaching GA and deprecated API removal point to a line that is consolidating.
◆ Prediction
Expect a 1.21.0 release candidate next, with the renewal policy work being the piece most likely to change shape before it stabilises.
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.
Alternatives to cert-manager 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 cert-manager or Gloo Gateway.
Honeycomb
Honeycomb's Canvas now remembers your systems and lays out each investigation in sections.
AdGuard Home
AdGuard Home's stable line takes a Go security update and turns off Multipath TCP.
Inspektor Gadget
Inspektor Gadget v0.58 adds SELinux and rename tracing and fixes stale OTel series
Verdaccio
Verdaccio's v9 pre-release counter hits 42, and the notes still say nothing
ManageEngine Applications Manager
ManageEngine Applications Manager adds a batch of Oracle Cloud monitors in Build 182900.
See all cert-manager alternatives → · See all Gloo Gateway alternatives →
Recent activity from cert-manager and Gloo Gateway
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoGloo Gateway1.20.29: failed reconcile no longer empties Envoy configs
- 14d agoGloo GatewayFix for proxies stuck on stale endpoints; Go 1.26.10
- 14d agoGloo Gateway1.20 backport of the stale-endpoint fix; Go 1.26.10
- 14d agoGloo Gateway1.19 backport of the stale-endpoint fix; Go 1.26.10
- 20d agoGloo Gateway1.20.27 bumps Go to 1.26.9
- 20d agoGloo Gateway1.21.18 bumps Go to 1.26.9
- 4mo agocert-managerv1.21.0-beta.0
- 4mo agocert-managerv1.21.0-alpha.1
- 7mo agocert-managerv1.21.0-alpha.0
Frequently asked questions
What is the difference between cert-manager and Gloo Gateway?
Both compete on the same themes — reliability — within Infra & APIs. Gloo Gateway is currently shipping more aggressively (velocity 5.0 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 cert-manager better than Gloo Gateway?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Gloo Gateway is currently shipping more aggressively (velocity 5.0 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 cert-manager?
Top cert-manager alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "cert-manager alternatives" section above for the current picks, or visit /alternatives/cert-manager 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.