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Comparison · Analytics
c3dr vs gMCPLite
A side-by-side editorial comparison of c3dr and gMCPLite — release velocity, themes, recent moves, and the top alternatives to consider.
c3dr vs gMCPLite: at a glance
What is c3dr?
A biomechanics C3D reader graduated through rOpenSci review to CRAN, then learned to write force plates.
c3dr reads and writes C3D motion-capture files in R, wrapping the EZC3D library. It cleared rOpenSci peer review and moved into the rOpenSci organisation in April 2025, reached CRAN a month later, and shipped force-platform export in c3d_write() in August. Releases are close together and each one has a clear single purpose.
What is gMCPLite?
gMCPLite exists to be gMCP without Java, and its releases guard that boundary rather than extend it.
gMCPLite is a fork of gMCP with the Java dependency removed and `hGraph()` ported over from gsDesign, giving R users graphical multiple comparison procedures and their visualisation without a JVM. Since that fork, no release has added a statistical capability. The visible history is compatibility work: ggplot2 3.5.0 argument naming, a cairo device for Unicode in examples, testthat 3.3.0 snapshot requirements, and a selective port of an upstream confidence-interval fix.
c3dr vs gMCPLite: editorial side-by-side
c3dr
0.0ANALYTICS
A biomechanics C3D reader graduated through rOpenSci review to CRAN, then learned to write force plates.
◆ Current state
c3dr reads and writes C3D motion-capture files in R, wrapping the EZC3D library. It cleared rOpenSci peer review and moved into the rOpenSci organisation in April 2025, reached CRAN a month later, and shipped force-platform export in c3d_write() in August. Releases are close together and each one has a clear single purpose.
◆ Where it's heading
The package is filling in the write side of the read/write pair. Reading was in place from the start; 0.2.0 extends c3d_write() to force-platform data on a direct user request, and the accompanying work preserves matrix structure on import and tracks upstream EZC3D changes. The review-era releases hardened validation and error messages, so the current cycle can be spent on capability rather than polish.
◆ Prediction
Expect further coverage of C3D block types in the writer and continued tracking of EZC3D releases; the changelog gives no signal of analysis features beyond file I/O.
gMCPLite
0.0ANALYTICS
gMCPLite exists to be gMCP without Java, and its releases guard that boundary rather than extend it.
◆ Current state
gMCPLite is a fork of gMCP with the Java dependency removed and `hGraph()` ported over from gsDesign, giving R users graphical multiple comparison procedures and their visualisation without a JVM. Since that fork, no release has added a statistical capability. The visible history is compatibility work: ggplot2 3.5.0 argument naming, a cairo device for Unicode in examples, testthat 3.3.0 snapshot requirements, and a selective port of an upstream confidence-interval fix.
◆ Where it's heading
This is a package with a fixed job. The maintainers track two moving targets — the upstream gMCP it forked from, and the R graphics and testing stack underneath it — and pull across only what is needed. The addition of vdiffr visual regression tests for `hGraph()` is the most substantive recent change and fits the same posture: the plots are the deliverable, so pin them against accidental drift rather than redesign them.
◆ Prediction
Expect the pattern to continue — compatibility releases driven by ggplot2, testthat and pkgdown changes, with any statistical content arriving only as a selective port from upstream gMCP.
Alternatives to c3dr and gMCPLite
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 c3dr or gMCPLite.
DoseFinding
New stewardship at openpharma, then two releases adding the methods MCP-Mod was missing
webmockr
The stubbing library added httr2 support, then spent a year cutting itself free of everything else
crul
crul took mocking back from webmockr and made it a property of the client itself
dendroNetwork
Six releases, six identical bodies — the feed carries the package abstract instead of release notes
chattr
chattr deleted every LLM integration it had written and outsourced the lot to ellmer
See all c3dr alternatives → · See all gMCPLite alternatives →
Recent activity from c3dr and gMCPLite
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 5mo agogMCPLiteSnapshot files bundled for testthat 3.3.0
- 11mo agogMCPLiteVisual regression tests added for hGraph()
- 11mo agoc3drc3d_write() gains force platform export
- 1y agoc3drgcc 15 compilation fix
- 1y agoc3drFirst CRAN release
- 1y agoc3drrOpenSci review lands; repo moves to rOpenSci
- 2y agogMCPLiteConfidence interval fix ported from upstream gMCP
- 2y agogMCPLitecairo_pdf device for Unicode in examples
- 2y agogMCPLitepkgdown tabset rendering fixed
- 3y agogMCPLiteBuild ignores docs; typos corrected
Frequently asked questions
What is the difference between c3dr and gMCPLite?
They serve adjacent needs but don't currently overlap on shipped themes. c3dr and gMCPLite 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 c3dr better than gMCPLite?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. c3dr and gMCPLite 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 c3dr?
Top c3dr alternatives in Analytics are ranked by recent ship velocity. Browse the "c3dr alternatives" section above for the current picks, or visit /alternatives/c3dr for the full list with editorial commentary on each.
What are the best alternatives to gMCPLite?
Top gMCPLite alternatives in Analytics are ranked by recent ship velocity. Browse the "gMCPLite alternatives" section above for the current picks, or visit /alternatives/gmcplite for the full list with editorial commentary on each.