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Comparison · Infra & APIs

chromote vs eratosthenes

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

chromote vs eratosthenes: at a glance

Featurechromoteeratosthenes
SectorInfra & APIsInfra & APIs
Velocity score0.02.5
Sparks · 30d00
Top themesheadless chrome, browser automation, reproducibility, devtools protocolarchaeology, bayesian-inference, mcmc, input-validation
Last editorial update5d ago1h ago
WebsiteVisit →Visit →

What is chromote?

chromote turned the browser itself into a pinned, downloadable dependency.

chromote drives headless Chrome from R over the DevTools Protocol and underpins the R screenshot and app-testing stack. The visible history is shaped almost entirely by Chrome's own changes: old headless mode removed, DevTools URLs moved, viewport APIs deprecated. Version 0.5.0 answered that by letting chromote fetch and pin specific Chrome builds itself.

Read the full chromote trajectory →

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().

Read the full eratosthenes trajectory →

chromote vs eratosthenes: editorial side-by-side

C
chromote
INFRA · APIS
0.0

chromote turned the browser itself into a pinned, downloadable dependency.

◆ Current state

chromote drives headless Chrome from R over the DevTools Protocol and underpins the R screenshot and app-testing stack. The visible history is shaped almost entirely by Chrome's own changes: old headless mode removed, DevTools URLs moved, viewport APIs deprecated. Version 0.5.0 answered that by letting chromote fetch and pin specific Chrome builds itself.

◆ Where it's heading

The package has moved from reacting to Chrome upgrades to controlling them. The 0.3.0 and 0.4.0 pair tracked the headless-mode transition by first adding an option and then flipping the default; 0.5.0 removed the need to track it at all by managing versioned binaries through Chrome for Testing. Alongside that, the session API keeps accumulating helpers that collapse multi-step DevTools call sequences, such as $go_to() and $set_viewport_size().

◆ Prediction

The version-management features shipped marked experimental, so the likely next step is stabilizing that API and extending the session helpers that wrap common DevTools sequences.

E
eratosthenes
INFRA · APIS
2.5

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.

Alternatives to chromote and eratosthenes

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 chromote or eratosthenes.

See all chromote alternatives → · See all eratosthenes alternatives →

Recent activity from chromote and eratosthenes

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

  1. 10d agoeratosthenesInput validators added; seq_check() replaced by seq_diag()
  2. 1y agoeratosthenesArtifact p.d.f. estimation consolidated into gibbs_ad_type()
  3. 1y agoeratosthenesMCMC diagnostics arrive: traceplots, histograms, batch-means MCSE
  4. 1y agochromote$go_to() helper added; DevTools view fixed for Chrome 135
  5. 1y agochromoteVersioned Chrome downloads and viewport control arrive
  6. 1y agochromoteDefault switches to new headless mode for Chrome v132+
  7. 1y agochromoteHeadless mode now selectable via option or env var
  8. 1y agochromoteFix launch_chrome() error caused by a typo
  9. 2y agochromoteis_active() redefined; adds respawn() and screenshot options

Frequently asked questions

What is the difference between chromote and eratosthenes?

They serve adjacent needs but don't currently overlap on shipped themes. eratosthenes is currently shipping more aggressively (velocity 2.5 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 chromote better than eratosthenes?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. eratosthenes is currently shipping more aggressively (velocity 2.5 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 chromote?

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

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.