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epidemics vs forestly

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

epidemics vs forestly: at a glance

Featureepidemicsforestly
SectorAnalyticsAnalytics
Velocity score3.80.0
Sparks · 30d10
Top themesepiverse-trace, compartmental-models, odin, breaking-changesclinical-safety, adverse-events, data-visualization, r-language
Last editorial update6h ago1h ago
WebsiteVisit →Visit →

What is epidemics?

epidemics swapped its C++ engine for odin — and quietly inverted how contact matrices must be passed.

epidemics ships composable compartmental model structures — default SEIR-V, Vacamole, diphtheria and Ebola — with classes for populations, interventions and vaccination campaigns. After more than two years without a release, 0.5.0 landed in July 2026 carrying both an engine migration and a breaking input-convention change. Maintainership moved to a new lead back in 0.4.0.

Read the full epidemics trajectory →

What is forestly?

forestly built an interactive safety review tool, then taught it to produce submission-ready RTF.

forestly renders adverse-event forest plots as interactive reactable widgets — filterable by AE category, with sliders for incidence thresholds and a toggle for the risk-difference column. Version 0.1.3 added `rtf_static_forestly()` for static RTF output, and 0.1.4 has been about giving the display owner control over what reviewers see: the CSV download button, the AE filter label, and the diff toggle can each be switched off.

Read the full forestly trajectory →

epidemics vs forestly: editorial side-by-side

E
epidemics
ANALYTICS
3.8

epidemics swapped its C++ engine for odin — and quietly inverted how contact matrices must be passed.

◆ Current state

epidemics ships composable compartmental model structures — default SEIR-V, Vacamole, diphtheria and Ebola — with classes for populations, interventions and vaccination campaigns. After more than two years without a release, 0.5.0 landed in July 2026 carrying both an engine migration and a breaking input-convention change. Maintainership moved to a new lead back in 0.4.0.

◆ Where it's heading

The package's history is a sequence of deliberate breaking releases: 0.2.0 renamed every model function and vectorised the ODE models, 0.3.0 restructured the Ebola model into two levels and made replicates the default, and 0.5.0 rewrites the compiled core. The direction is toward a smaller, more declarative model definition layer with the numerical work delegated to a dedicated tool.

◆ Prediction

With the default, Vacamole and diphtheria systems now declared in odin, the Ebola model is the obvious remaining candidate for the same treatment.

F
forestly
ANALYTICS
0.0

forestly built an interactive safety review tool, then taught it to produce submission-ready RTF.

◆ Current state

forestly renders adverse-event forest plots as interactive reactable widgets — filterable by AE category, with sliders for incidence thresholds and a toggle for the risk-difference column. Version 0.1.3 added `rtf_static_forestly()` for static RTF output, and 0.1.4 has been about giving the display owner control over what reviewers see: the CSV download button, the AE filter label, and the diff toggle can each be switched off.

◆ Where it's heading

The arc runs from a fixed interactive widget toward a configurable one with two output modes. Nearly every new argument in the last two releases exists to remove something from the display or relabel it, which suggests the users driving development are producing outputs for others to review under conventions they do not control. The x-axis range, column header, figure header and slider range arguments point the same way — this is a tool being fitted into standardised reporting rather than used ad hoc.

◆ Prediction

Given that the last two releases have consisted almost entirely of display-control arguments, the next is likely more of the same, applied to whichever parts of the interactive layout are still fixed.

Alternatives to epidemics and forestly

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 epidemics or forestly.

See all epidemics alternatives → · See all forestly alternatives →

Recent activity from epidemics and forestly

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

  1. 25d agoepidemicsODE models migrate to odin; contact matrices must no longer be transposed
  2. 5mo agoforestlyDownload button, AE filter label and diff toggle become optional
  3. 11mo agoforestlyStatic RTF forest plots join the interactive output
  4. 1y agoforestlyreactR 0.6.0 rendering fix and slider label control
  5. 2y agoforestlyTreatment group selection and rough-edge fixes
  6. 2y agoepidemicsPeak timing and scenario comparison helpers; negative-susceptible bug fixed
  7. 2y agoepidemicsEbola model accepts vector inputs and defaults to 100 replicates
  8. 2y agoepidemicsODE models vectorised; every model function renamed
  9. 2y agoepidemicsFirst release: four composable compartmental model structures
  10. 3y agoforestlyFirst release on GitHub and CRAN

Frequently asked questions

What is the difference between epidemics and forestly?

They serve adjacent needs but don't currently overlap on shipped themes. epidemics is currently shipping more aggressively (velocity 3.8 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 epidemics better than forestly?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. epidemics is currently shipping more aggressively (velocity 3.8 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 Analytics products to evaluate alongside.

What are the best alternatives to epidemics?

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

What are the best alternatives to forestly?

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