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Comparison · Infra & APIs

authentik vs calculus

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

authentik vs calculus: at a glance

Featureauthentikcalculus
SectorInfra & APIsInfra & APIs
Velocity score6.30.0
Sparks · 30d10
Top themesidentity-provider, enterprise-agents, endpoint-identity, oauth2symbolic-computation, numerical-calculus, complex-numbers, jss
Last editorial update43m ago3h ago
WebsiteVisit →Visit →

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.

Read the full authentik trajectory →

What is calculus?

A published calculus engine whose last two years produced one overloaded method

calculus provides high-dimensional numerical and symbolic calculus in R — differentiation, integration, tensor operations and, since the 0.3.0 restructure, ordinary differential equations. It was published in the Journal of Statistical Software in 2022, which is the event the 1.0.0 release records rather than any code change. Since then it has produced two releases: a documentation site move, and in July 2025 an overload of is.numeric to include complex numbers.

Read the full calculus trajectory →

authentik vs calculus: editorial side-by-side

A
authentik
INFRA · APIS
6.3

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.

C
calculus
INFRA · APIS
0.0

A published calculus engine whose last two years produced one overloaded method

◆ Current state

calculus provides high-dimensional numerical and symbolic calculus in R — differentiation, integration, tensor operations and, since the 0.3.0 restructure, ordinary differential equations. It was published in the Journal of Statistical Software in 2022, which is the event the 1.0.0 release records rather than any code change. Since then it has produced two releases: a documentation site move, and in July 2025 an overload of is.numeric to include complex numbers.

◆ Where it's heading

The release history divides cleanly at the JSS publication. Everything before it is development plus the CRAN and pre-review fixes needed to get there; everything after is incidental. The complex-number overload fits the package's positioning around symbolic and high-dimensional work, where complex values arise naturally, but it is one method and the notes say nothing more.

◆ Prediction

Expect releases only when a CRAN check or a downstream dependency forces one; nothing in these entries points to planned additions to the numerical or symbolic engines.

Alternatives to authentik and calculus

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 calculus.

See all authentik alternatives → · See all calculus alternatives →

Recent activity from authentik and calculus

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

  1. 1d agoauthentikauthentik 2026.8 goes GA with Actors and domain-joined Agents
  2. 9d agoauthentikauthentik 2026.8.0-rc7 lands Actors, enterprise Agents, and CAS sources
  3. 16d agoauthentik2026.8.0-rc6: flaky test and CI metadata fixes
  4. 16d agoauthentik2026.8.0-rc5: release plumbing only
  5. 16d agoauthentik2026.8.0-rc4: fix-only candidate
  6. 16d agoauthentik2026.8.0-rc3: cherry-picked fixes and CI work
  7. 1y agocalculusis.numeric overloaded to accept complex numbers
  8. 3y agocalculusDocumentation site moved to a new domain
  9. 3y agocalculusJournal of Statistical Software publication recorded
  10. 4y agocalculusCRAN check fixes; CI moved to GitHub Actions
  11. 5y agocalculusCRAN check and JSS pre-review fixes
  12. 5y agocalculusPackage restructured; ordinary differential equations added

Frequently asked questions

What is the difference between authentik and calculus?

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 calculus?

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 calculus?

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