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Comparison · Analytics

cfr vs taxizedb

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

cfr vs taxizedb: at a glance

Featurecfrtaxizedb
SectorAnalyticsAnalytics
Velocity score0.00.0
Sparks · 30d00
Top themesepidemiology, severity-estimation, outbreak-analytics, epiversetaxonomy, biodiversity-data, sqlite, ropensci
Last editorial update3h ago1h ago
WebsiteVisit →Visit →

What is cfr?

cfr packaged delay-corrected severity estimation, then went quiet on maintenance.

The package estimates disease severity and case ascertainment while correcting for the delay between a case being reported and its outcome being known. After the 0.1.1 rework of the estimation internals and a maintainer handover to Adam Kucharski, activity dropped to a vignette and an R-devel compatibility patch in February 2025.

Read the full cfr trajectory →

What is taxizedb?

Stopped trusting the cloud to prepare its taxonomic databases and does the conversion locally.

taxizedb queries taxonomic databases locally rather than through rate-limited web APIs, which is what makes it usable for millions of name lookups. Version 0.2.0 established the current design: every source stored as SQLite, no credentials or ports needed, plus name-to-ID mapping functions and ports of the core taxize verbs. The most recent release changes how those databases arrive — instead of downloading a preprocessed SQLite file from the cloud, db_download_*() now fetches raw data and converts it locally for every source, because the cloud path kept breaking.

Read the full taxizedb trajectory →

cfr vs taxizedb: editorial side-by-side

C
cfr
ANALYTICS
0.0

cfr packaged delay-corrected severity estimation, then went quiet on maintenance.

◆ Current state

The package estimates disease severity and case ascertainment while correcting for the delay between a case being reported and its outcome being known. After the 0.1.1 rework of the estimation internals and a maintainer handover to Adam Kucharski, activity dropped to a vignette and an R-devel compatibility patch in February 2025.

◆ Where it's heading

The methodological work is done and consolidated: likelihood approximation is now selected automatically from outbreak size and an initial severity estimate, and the internals were renamed with a dot prefix to close the public surface down to cfr_static(), cfr_rolling() and the data-preparation generic. Releases since have been documentation and compatibility only.

◆ Prediction

The 0.1.0 notes flagged time-varying ascertainment as future work and it has not appeared in the two releases since; nothing in these entries indicates when or whether it lands.

T
taxizedb
ANALYTICS
0.0

Stopped trusting the cloud to prepare its taxonomic databases and does the conversion locally.

◆ Current state

taxizedb queries taxonomic databases locally rather than through rate-limited web APIs, which is what makes it usable for millions of name lookups. Version 0.2.0 established the current design: every source stored as SQLite, no credentials or ports needed, plus name-to-ID mapping functions and ports of the core taxize verbs. The most recent release changes how those databases arrive — instead of downloading a preprocessed SQLite file from the cloud, db_download_*() now fetches raw data and converts it locally for every source, because the cloud path kept breaking.

◆ Where it's heading

The package is trading convenience for independence. Each release removes another thing that has to be working elsewhere for the package to function: hosted database preparation is gone, and where a provider disappears the package documents it rather than pretending otherwise — db_download_tpl() is now defunct because The Plant List no longer exists, though previously downloaded copies still query fine. Release cadence is slow, with multi-year gaps and a maintainer handover in 2023.

◆ Prediction

Expect further releases to track data sources appearing and disappearing rather than adding features, since that has driven every recent change. Local conversion also shifts cost onto users, so build time and memory for the larger sources are the plausible next thing to need attention.

Alternatives to cfr and taxizedb

Other Analytics 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 cfr or taxizedb.

See all cfr alternatives → · See all taxizedb alternatives →

Recent activity from cfr and taxizedb

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

  1. 9mo agotaxizedbDatabases now built locally from raw data, not the cloud
  2. 1y agocfrR-devel difftime patch and an individual-data vignette
  3. 2y agocfrSeverity estimator picks its own likelihood approximation
  4. 2y agocfrDelay-corrected severity and ascertainment estimation on CRAN
  5. 3y agotaxizedbPatch release for a maintainer change
  6. 5y agotaxizedbtaxa_at() retrieves ancestors at a named rank
  7. 5y agotaxizedbFixes failing tests
  8. 6y agotaxizedbSQLite everywhere, three new sources, taxize verbs ported
  9. 9y agotaxizedbTracks the dplyr split that introduced dbplyr

Frequently asked questions

What is the difference between cfr and taxizedb?

They serve adjacent needs but don't currently overlap on shipped themes. cfr and taxizedb are shipping at a similar cadence (velocity 0.0 vs 0.0, 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 cfr better than taxizedb?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. cfr and taxizedb are shipping at a similar cadence (velocity 0.0 vs 0.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Analytics products to evaluate alongside.

What are the best alternatives to cfr?

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

What are the best alternatives to taxizedb?

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