Rancher
Rancher's public feed is a build-tag stream: three branches bumped the same Go image on one afternoon
Comparison · Infra & APIs
authentik vs RSA
A side-by-side editorial comparison of authentik and RSA — release velocity, themes, recent moves, and the top alternatives to consider.
authentik vs RSA: at a glance
What is authentik?
authentik 2026.8 ships: Actors, domain-joined Agents, and a push past browser-mediated SSO
2026.8.0 is out, closing a seven-candidate train that ran through early August. The GA tag itself is the last cherry-pick batch — SCIM group membership removals, a proxy redirect that preserves query strings, session deletion on user deactivation — but the release it finalizes is where the substance lives: an Actors primitive in core, an enterprise Agent requiring a domain join and its own API scope, OAuth2 token exchange delegation, and a CAS source integration.
What is RSA?
Four years quiet, then two releases ninety seconds apart, both about drawing better plots
RSA implements response surface analysis for congruence questions in psychology, built on lavaan. After four and a half years of silence the maintainer pushed 0.10.6 and 0.10.8 within ninety seconds of each other on 2 October 2025, so the feed's version sequence is a backfill of accumulated work rather than two separate release events. Both are plotting releases: user-defined lines and points on the surface, stilts for selected data points, and separate control of point fill and border colour.
authentik vs RSA: editorial side-by-side
authentik
6.3INFRA · APIS
authentik 2026.8 ships: Actors, domain-joined Agents, and a push past browser-mediated SSO
◆ Current state
2026.8.0 is out, closing a seven-candidate train that ran through early August. The GA tag itself is the last cherry-pick batch — SCIM group membership removals, a proxy redirect that preserves query strings, session deletion on user deactivation — but the release it finalizes is where the substance lives: an Actors primitive in core, an enterprise Agent requiring a domain join and its own API scope, OAuth2 token exchange delegation, and a CAS source integration.
◆ Where it's heading
Two threads converge in this major. The identity surface keeps broadening at the protocol edge — CAS, WS-Fed, token exchange delegation, on-behalf-of — while the enterprise tier grows an endpoint story that reaches machines and devices rather than browser sessions. The RC train's shape reinforces it: six candidates fired in one day on CI and docs, then one heavy candidate carrying the features, then a fix-only close. That is release engineering hardened around a major, not a routine point release.
◆ Prediction
With Agents and Actors now GA rather than cherry-picks, the next branch should build out what they enable — device-conditioned policies or agent-brokered credentials — while 2026.8.x settles into backport patches.
RSA
0.0INFRA · APIS
Four years quiet, then two releases ninety seconds apart, both about drawing better plots
◆ Current state
RSA implements response surface analysis for congruence questions in psychology, built on lavaan. After four and a half years of silence the maintainer pushed 0.10.6 and 0.10.8 within ninety seconds of each other on 2 October 2025, so the feed's version sequence is a backfill of accumulated work rather than two separate release events. Both are plotting releases: user-defined lines and points on the surface, stilts for selected data points, and separate control of point fill and border colour.
◆ Where it's heading
The statistical core has been stable since 0.10.0 in 2020, which added control variables, pooled centering and a corrected AICc. Everything since is either plot customisation or a reaction to a dependency — lavaan model comparison, rgl deprecations, tkrplot on Apple Silicon, the ggplot2 fill aesthetic. This is a mature method implementation in maintenance, where the visible work is making its surface plots publishable.
◆ Prediction
Further releases are most likely dependency reactions, with rgl and ggplot2 the two that have repeatedly forced changes, and plot customisation arriving in batches whenever the maintainer returns to the package.
Alternatives to authentik and RSA
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 authentik or RSA.
Buildkite
Buildkite keeps converting hand-rolled agent workarounds into first-class CI primitives.
Cursor
Cursor's agents stop waiting to be asked - they subscribe, and they hold a goal until it's done.
incident.io
Nexus does the diagnosis; the agent is now reaching into the status page too.
Warp
Warp turned its quarter of software-factory essays into infrastructure you can buy.
Okta
Okta's developer blog is a Cross App Access campaign, now diluted by advocacy-team storytelling.
See all authentik alternatives → · See all RSA alternatives →
Recent activity from authentik and RSA
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoauthentikauthentik 2026.8 goes GA with Actors and domain-joined Agents ⚡
- 9d agoauthentikauthentik 2026.8.0-rc7 lands Actors, enterprise Agents, and CAS sources
- 16d agoauthentik2026.8.0-rc6: flaky test and CI metadata fixes
- 16d agoauthentik2026.8.0-rc5: release plumbing only
- 16d agoauthentik2026.8.0-rc4: fix-only candidate
- 16d agoauthentik2026.8.0-rc3: cherry-picked fixes and CI work
- 10mo agoRSAUser-defined lines and points on response surface plots
- 10mo agoRSAStilts and separate point fill and border colours in plotRSA
- 5y agoRSADemo dataset for control variables and cubic RSA; SRSQD fix
- 5y agoRSAtkrplot moved to Suggests for Apple Silicon
- 6y agoRSAFixes for R 4.0.0 stringsAsFactors and discrepancy output
- 6y agoRSAControl variables, pooled centering and a corrected AICc
Frequently asked questions
What is the difference between authentik and RSA?
They serve adjacent needs but don't currently overlap on shipped themes. authentik is currently shipping more aggressively (velocity 6.3 vs 0.0), 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 authentik better than RSA?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. authentik is currently shipping more aggressively (velocity 6.3 vs 0.0), 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 authentik?
Top authentik alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "authentik alternatives" section above for the current picks, or visit /alternatives/authentik for the full list with editorial commentary on each.
What are the best alternatives to RSA?
Top RSA alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "RSA alternatives" section above for the current picks, or visit /alternatives/rsa for the full list with editorial commentary on each.