OpenMQTTGateway
OpenMQTTGateway spent three years shedding its dependencies, then stopped shipping entirely.
Comparison · Infra & APIs
cert-manager vs Dokku
A side-by-side editorial comparison of cert-manager and Dokku — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:kubernetes
cert-manager vs Dokku: 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 Dokku?
Dokku ships patches weekly, and quietly grows a Kubernetes backend under its single-host roots.
Dokku releases on a near-weekly patch cadence, and most entries are dominated by Dependabot bumps to test fixtures. The real content is thin but consistent: a command injection fix in docker options evaluation, per-app Let's Encrypt emails on k3s, atomic buildpack list replacement, custom chown values, and JSON output added to apps:list, ps:scale and docker-options reports. Several tags in early July were published within minutes of each other and out of version order.
cert-manager vs Dokku: 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.
Dokku
5.0INFRA · APIS
Dokku ships patches weekly, and quietly grows a Kubernetes backend under its single-host roots.
◆ Current state
Dokku releases on a near-weekly patch cadence, and most entries are dominated by Dependabot bumps to test fixtures. The real content is thin but consistent: a command injection fix in docker options evaluation, per-app Let's Encrypt emails on k3s, atomic buildpack list replacement, custom chown values, and JSON output added to apps:list, ps:scale and docker-options reports. Several tags in early July were published within minutes of each other and out of version order.
◆ Where it's heading
Two threads carry through. The scheduler-k3s plugin keeps accumulating what a real platform needs — helm chart previews, autoscaling auth state, control-plane node matching, per-app certificate configuration — which pushes Dokku beyond the single-host Docker tool it started as. The second is machine readability: command after command gains --format json, turning the CLI into something automation can consume rather than parse.
◆ Prediction
Expect JSON output to keep spreading command by command until it is the norm rather than a flag, and expect the k3s scheduler to stay the destination for new capability while the Docker scheduler receives fixes. The patch train shows no sign of consolidating into a minor release.
Alternatives to cert-manager and Dokku
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 Dokku.
Umbrel
umbrelOS now pins any Docker container to the home screen — the app store stopped being the boundary.
ZoneMinder
ZoneMinder 1.38 finally split capturing from analysing — and added roles to a system that had none.
YARA
YARA ships bounds checks, not features — three patch releases published thirteen minutes apart.
Fail2Ban
Fail2Ban's last release was an interim beta 14 months ago; the feed spans eight years in six entries.
ClamAV
ClamAV's file parsers keep yielding CVEs — and every fix ships twice, to two branches.
See all cert-manager alternatives → · See all Dokku alternatives →
Recent activity from cert-manager and Dokku
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 15d agoDokkuCommand injection fix, per-app Let's Encrypt on k3s
- 19d agoDokkuBuildpack docs links and test dependency bumps
- 19d agoDokkuCertificate CN parsing fixed for OpenSSL 3.x
- 28d agoDokkuAtomic buildpack replacement and structured reports
- 1mo agoDokku0.38.19 tag with no release notes
- 1mo agoDokkuTest fixture Go version bumps
- 1mo agocert-managerv1.21.0-beta.0
- 1mo agocert-managerv1.21.0-alpha.1
- 4mo agocert-managerv1.21.0-alpha.0
Frequently asked questions
What is the difference between cert-manager and Dokku?
Both compete on the same themes — kubernetes — within Infra & APIs. Dokku 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 Dokku?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Dokku 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 Dokku?
Top Dokku alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Dokku alternatives" section above for the current picks, or visit /alternatives/dokku for the full list with editorial commentary on each.