KRLS
A 2014 kernel regression method getting the scalability and tooling it never had, in a three-release afternoon.
Comparison · Infra & APIs
eratosthenes vs SuperTokens
A side-by-side editorial comparison of eratosthenes and SuperTokens — release velocity, themes, recent moves, and the top alternatives to consider.
eratosthenes vs SuperTokens: at a glance
What is eratosthenes?
eratosthenes spends 0.1.0 hardening inputs rather than adding chronology methods.
eratosthenes does Bayesian estimation of archaeological chronologies from relative sequences, absolute constraints and artifact assemblages. The 0.0.9 line built out the inference diagnostics — traceplots, histograms, batch-means MCSE reporting, displacement estimation — and then consolidated artifact probability-density estimation into a single gibbs_ad_type(). The 0.1.0 tag turns outward instead, adding validators for every user-supplied structure and replacing seq_check() with a more informative seq_diag().
What is SuperTokens?
SuperTokens is hardening SAML and building a migration path off other auth providers.
SuperTokens is an open-source authentication service, and its core repo is running a 12.0 canary line alongside stable patches. The work in this window falls into two piles: SAML security — XML signature wrapping protection in 12.0.2-canary, further hardening in the 12.0.10 release — and migration mode, where new core-user-data records can be created as MIGRATED and the transition is now blocked while inconsistent users exist. Release notes are thin, usually a PR title or two per tag.
eratosthenes vs SuperTokens: editorial side-by-side
eratosthenes
2.5INFRA · APIS
eratosthenes spends 0.1.0 hardening inputs rather than adding chronology methods.
◆ Current state
eratosthenes does Bayesian estimation of archaeological chronologies from relative sequences, absolute constraints and artifact assemblages. The 0.0.9 line built out the inference diagnostics — traceplots, histograms, batch-means MCSE reporting, displacement estimation — and then consolidated artifact probability-density estimation into a single gibbs_ad_type(). The 0.1.0 tag turns outward instead, adding validators for every user-supplied structure and replacing seq_check() with a more informative seq_diag().
◆ Where it's heading
The package is moving from research code to something a non-author can run. Consolidating estimation behind one function, then wrapping every input class in a validator, are the two steps that make failures legible instead of cryptic, and the diagnostics added earlier serve the same end for the sampler itself. Nothing in the window changes the underlying model; the work is all about making it usable and its output checkable.
◆ Prediction
With inputs validated and diagnostics in place, the next release is more likely to extend the constraint or assemblage modelling than to keep reworking the interface, though the feed's three sparse tags give little to read a cadence from.
SuperTokens
2.5INFRA · APIS
SuperTokens is hardening SAML and building a migration path off other auth providers.
◆ Current state
SuperTokens is an open-source authentication service, and its core repo is running a 12.0 canary line alongside stable patches. The work in this window falls into two piles: SAML security — XML signature wrapping protection in 12.0.2-canary, further hardening in the 12.0.10 release — and migration mode, where new core-user-data records can be created as MIGRATED and the transition is now blocked while inconsistent users exist. Release notes are thin, usually a PR title or two per tag.
◆ Where it's heading
Migration mode plus account-linking exploration is the tell: this is infrastructure for importing an existing user base from another provider without breaking identity linkage mid-flight, and the guard added in 12.0.5-canary shows they hit the inconsistent-state case in practice. The SAML work runs in parallel because enterprise SAML is what a team is usually migrating toward. Also worth noting: an automated contributor, supertokens-agent-runner, opened its first PRs in this window, so part of the fix and test volume is now agent-authored.
◆ Prediction
A stable 12.x release consolidating the canary migration-mode work is the readable next step, likely once the MIGRATED transition guards have run without incident. More SAML hardening should be expected given two separate fixes landed in this window alone.
Alternatives to eratosthenes and SuperTokens
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 eratosthenes or SuperTokens.
legendry
A ggplot2 extension quietly turning axes and legends into a place where other plots can live.
openairmaps
The mapping half of the openair stack, currently dismantling its own static plotting in favour of the parent package.
openair
Air quality analysis rebuilt on ggplot2, twenty years of lattice plotting dropped in one release.
retroharmonize
Survey harmonization tooling that spent its last release earning its way back onto CRAN.
asar
A NOAA report-template generator being debugged by the workshops that teach it.
See all eratosthenes alternatives → · See all SuperTokens alternatives →
Recent activity from eratosthenes and SuperTokens
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 10d agoeratosthenesInput validators added; seq_check() replaced by seq_diag()
- 13d agoSuperTokensSAML hardening lands on the stable 12.0 line
- 1mo agoSuperTokensMigration mode blocks transition while inconsistent users exist
- 1mo agoSuperTokens12.0.4-canary ships with no described changes
- 1mo agoSuperTokensActivity log table put into use
- 2mo agoSuperTokensSAML gains XML signature wrapping protection
- 2mo agoSuperTokensNew core user data records can be created as MIGRATED
- 1y agoeratosthenesArtifact p.d.f. estimation consolidated into gibbs_ad_type()
- 1y agoeratosthenesMCMC diagnostics arrive: traceplots, histograms, batch-means MCSE
Frequently asked questions
What is the difference between eratosthenes and SuperTokens?
They serve adjacent needs but don't currently overlap on shipped themes. eratosthenes and SuperTokens are shipping at a similar cadence (velocity 2.5 vs 2.5, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is eratosthenes better than SuperTokens?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. eratosthenes and SuperTokens are shipping at a similar cadence (velocity 2.5 vs 2.5, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to eratosthenes?
Top eratosthenes alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "eratosthenes alternatives" section above for the current picks, or visit /alternatives/eratosthenes for the full list with editorial commentary on each.
What are the best alternatives to SuperTokens?
Top SuperTokens alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "SuperTokens alternatives" section above for the current picks, or visit /alternatives/supertokens for the full list with editorial commentary on each.