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fossilsim vs r5r

A side-by-side editorial comparison of fossilsim and r5r — release velocity, themes, recent moves, and the top alternatives to consider.

Shared themes:r-package

fossilsim vs r5r: at a glance

Featurefossilsimr5r
SectorAnalyticsAnalytics
Velocity score0.00.0
Sparks · 30d00
Top themesphylogenetics, simulation, trait-evolution, birth-death-modelstransport-accessibility, routing, gtfs, java
Last editorial update59m ago1h ago
WebsiteVisit →Visit →

What is fossilsim?

A fossil-record simulator that quietly grew a trait-evolution engine.

FossilSim is a mature R package for simulating fossil records on phylogenetic trees, and its release cadence reflects that: long gaps punctuated by a single capability addition. The last four releases span three years, with the most recent being a compatibility sync to its companion Shiny front-end rather than new functionality. The core simulation surface has been stable since 2022.

Read the full fossilsim trajectory →

What is r5r?

r5r's jump to JDK 21 fixed Apple Silicon and broke everyone's toolchain at once.

r5r runs Conveyal's R5 routing engine from R for multimodal travel-time matrices, accessibility measures and isochrones. The current line requires JDK 21 and R5 v7.1, stores the engine jar under a managed user directory, and detects when a chosen date has no transit service instead of returning silent nonsense. Isochrones can now be returned as polygons rather than lines.

Read the full r5r trajectory →

fossilsim vs r5r: editorial side-by-side

F
fossilsim
ANALYTICS
0.0

A fossil-record simulator that quietly grew a trait-evolution engine.

◆ Current state

FossilSim is a mature R package for simulating fossil records on phylogenetic trees, and its release cadence reflects that: long gaps punctuated by a single capability addition. The last four releases span three years, with the most recent being a compatibility sync to its companion Shiny front-end rather than new functionality. The core simulation surface has been stable since 2022.

◆ Where it's heading

The arc runs from sampling mechanics toward simulating what the organisms actually were. Version 2.2.0 taught the package to handle occurrence data for occurrence birth-death models; 2.3.0 then added trait simulation under Mk, BM and OU, which is a different kind of output than fossil ages. Since then the work has been maintenance and keeping the FossilSimShiny GUI in step, suggesting the authors consider the current model set feature-complete.

◆ Prediction

The pairing of the 2.3.3 release with a FossilSimShiny version bump points to the GUI, not the library, as where the next visible work lands. The entries do not show enough activity to predict a specific new model family.

R
r5r
ANALYTICS
0.0

r5r's jump to JDK 21 fixed Apple Silicon and broke everyone's toolchain at once.

◆ Current state

r5r runs Conveyal's R5 routing engine from R for multimodal travel-time matrices, accessibility measures and isochrones. The current line requires JDK 21 and R5 v7.1, stores the engine jar under a managed user directory, and detects when a chosen date has no transit service instead of returning silent nonsense. Isochrones can now be returned as polygons rather than lines.

◆ Where it's heading

Development alternates between tracking upstream R5 and smoothing the rough edges its Java dependency creates. The v2.0 release was the pivotal one: raising the JDK floor was a breaking change, but it is what resolved the Mac ARM incompatibility and unblocked users on modern hardware. Since then the work has returned to routing outputs and error handling.

◆ Prediction

Expect further upstream R5 tracking plus incremental isochrone and accessibility options; the JDK floor has just been reset, so another runtime break is unlikely soon.

Alternatives to fossilsim and r5r

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 fossilsim or r5r.

See all fossilsim alternatives → · See all r5r alternatives →

Recent activity from fossilsim and r5r

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

  1. 1y agor5rPolygon isochrones and empty-service detection
  2. 1y agor5rJDK 21 requirement lands, fixing Apple Silicon support
  3. 2y agofossilsimCompatibility bump for FossilSimShiny 1.1.2
  4. 3y agor5rAdds isochrone() with vignettes and FAQ
  5. 3y agor5rBumps R5 to 6.9 for cropped OSM network fix
  6. 4y agofossilsimBug fixes and documentation cleanup
  7. 4y agofossilsimTrait simulation arrives: Mk, BM and OU models
  8. 5y agofossilsimOccurrence handling for the occurrence birth-death model

Frequently asked questions

What is the difference between fossilsim and r5r?

Both compete on the same themes — r-package — within Analytics. fossilsim and r5r 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 fossilsim better than r5r?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. fossilsim and r5r 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 fossilsim?

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

What are the best alternatives to r5r?

Top r5r alternatives in Analytics are ranked by recent ship velocity. Browse the "r5r alternatives" section above for the current picks, or visit /alternatives/r5r-r for the full list with editorial commentary on each.