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Comparison · Analytics
ibdsim2 vs resmush
A side-by-side editorial comparison of ibdsim2 and resmush — release velocity, themes, recent moves, and the top alternatives to consider.
ibdsim2 vs resmush: at a glance
What is ibdsim2?
A pedigree IBD simulator that absorbed its own web app and now optimises for dense marker panels.
ibdsim2 simulates identity-by-descent sharing along chromosomes for arbitrary pedigrees, in both autosomal and X-chromosomal form, with downstream tools for segment statistics, pattern finding and distribution plots. Since 2.1.0 the Shiny front end lives inside the package and launches via launchApp() rather than sitting in a separate repository. The latest release is performance work, with profileSimIBD() substantially sped up for dense marker panels and ibdsim() skipping recombination in pedigree branches that cannot affect the result.
What is resmush?
resmush declared itself finished and has shipped nothing but maintenance since.
resmush compresses images through the reSmush.it API from R. Version 1.0.0 was an explicit maturity statement rather than a feature release: the major version was bumped to signal a stable development state, the minimum R version moved to 4.1.0, and documentation moved to Quarto. The two releases since are console message polish, an internals refactor, and mock-based tests.
ibdsim2 vs resmush: editorial side-by-side
ibdsim2
2.5ANALYTICS
A pedigree IBD simulator that absorbed its own web app and now optimises for dense marker panels.
◆ Current state
ibdsim2 simulates identity-by-descent sharing along chromosomes for arbitrary pedigrees, in both autosomal and X-chromosomal form, with downstream tools for segment statistics, pattern finding and distribution plots. Since 2.1.0 the Shiny front end lives inside the package and launches via launchApp() rather than sitting in a separate repository. The latest release is performance work, with profileSimIBD() substantially sped up for dense marker panels and ibdsim() skipping recombination in pedigree branches that cannot affect the result.
◆ Where it's heading
Two long-running threads. One is the app as a first-class part of the package, which has been getting input validation, dependency checks and plotting fixes release after release, treating a research GUI as software to be maintained rather than a demo. The other is numerical care: the built-in recombination map was rebuilt in 2.3.0 with better chromosome endpoints and a thinning algorithm that cut it from about 38,000 points to 14,000 without losing accuracy, and IBD segment merging has been made consistent across the realised-coefficient functions. The maintainer flags repeatedly that seeded results may differ across versions, which is the right disclosure for a simulator used in published analyses.
◆ Prediction
The recent work points at further speed on dense panels and continued hardening of app input handling, both of which have appeared in each of the last several releases. Nothing here signals a new modelling capability on the way.
resmush
0.0ANALYTICS
resmush declared itself finished and has shipped nothing but maintenance since.
◆ Current state
resmush compresses images through the reSmush.it API from R. Version 1.0.0 was an explicit maturity statement rather than a feature release: the major version was bumped to signal a stable development state, the minimum R version moved to 4.1.0, and documentation moved to Quarto. The two releases since are console message polish, an internals refactor, and mock-based tests.
◆ Where it's heading
This is a package in maintenance by design. The functional surface has not changed since 0.2.2 added a dry-run check and a referer header to the API calls, and the notable earlier change was subtractive, dropping webp when the upstream API stopped accepting it. Recent activity is dominated by dependency bumps and testing work, with mocks replacing live API calls in the test suite.
◆ Prediction
Expect the same maintenance cadence, with the most likely source of a real change being another format or endpoint shift at the reSmush.it API rather than anything originating in the package.
Alternatives to ibdsim2 and resmush
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 ibdsim2 or resmush.
spsurvey
spsurvey has spent four years consolidating after its 5.0.0 rewrite rather than adding to it
StreamCatTools
StreamCatTools is quietly moving off web services and onto cloud-native GeoParquet
reproducible
reproducible added a windowed read path so remote GeoTiffs never fully download
qcTAF
qcTAF is building an automated checklist for reproducible fisheries assessments, one criterion at a time
rpymat
After three dormant years, rpymat returned to fix the OpenMP crash that breaks R and conda together
See all ibdsim2 alternatives → · See all resmush alternatives →
Recent activity from ibdsim2 and resmush
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 11d agoibdsim2profileSimIBD() sped up for dense marker panels; segment merging fixed
- 1mo agoresmushTests rewritten to use mocks
- 2mo agoresmushClearer console messages for optimization reports
- 5mo agoresmushR 4.1 minimum as the package declares maturity
- 7mo agoresmushAPI calls verify the compressed file exists first
- 8mo agoibdsim2Segment-distribution merge argument, and function-valued parameters
- 1y agoibdsim2Built-in decode19 recombination map rebuilt, cutting 38k points to 14k
- 1y agoibdsim2Consistent IBD segment merging across the realised-coefficient functions
- 1y agoresmushDocumentation update
- 1y agoibdsim2Built-in pedigree labels revised; extra inbred examples added
- 1y agoibdsim2The Shiny front end moves into the package and gains X-chromosomal simulation ⚡
- 2y agoresmushwebp support removed after the API dropped it
Frequently asked questions
What is the difference between ibdsim2 and resmush?
They serve adjacent needs but don't currently overlap on shipped themes. ibdsim2 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 ibdsim2 better than resmush?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. ibdsim2 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 Analytics products to evaluate alongside.
What are the best alternatives to ibdsim2?
Top ibdsim2 alternatives in Analytics are ranked by recent ship velocity. Browse the "ibdsim2 alternatives" section above for the current picks, or visit /alternatives/ibdsim2 for the full list with editorial commentary on each.
What are the best alternatives to resmush?
Top resmush alternatives in Analytics are ranked by recent ship velocity. Browse the "resmush alternatives" section above for the current picks, or visit /alternatives/resmush for the full list with editorial commentary on each.