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Comparison · Infra & APIs
accessr vs profileCI
A side-by-side editorial comparison of accessr and profileCI — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:r-package
accessr vs profileCI: at a glance
What is accessr?
One R Markdown source, four accessible formats — and a fortnight spent patching around someone else's bug.
accessr turns a single R Markdown file into HTML slides, HTML, Word and PDF output, with an emphasis on producing documents a screen reader can navigate. Accessible PDFs come via OfficeToPDF and are Windows-only, which is the package's main structural constraint. Recent releases have been spent absorbing and then unwinding a fault in the officedown dependency.
What is profileCI?
Profile-likelihood confidence intervals for any fitted model, in a feed that publishes out of order.
profileCI computes confidence intervals from the profile log-likelihood for user-supplied fitted models, generalising what confint.glm does for GLMs to any model object exposing a log-likelihood. The releases handle the awkward cases that make profiling fail in practice: infinite limits when the profile never drops below the interval threshold, bounded profiling ranges, and interpolation that breaks down near the limits. Only convex log-likelihoods are supported, so disjoint intervals are out of scope by design.
accessr vs profileCI: editorial side-by-side
accessr
0.0INFRA · APIS
One R Markdown source, four accessible formats — and a fortnight spent patching around someone else's bug.
◆ Current state
accessr turns a single R Markdown file into HTML slides, HTML, Word and PDF output, with an emphasis on producing documents a screen reader can navigate. Accessible PDFs come via OfficeToPDF and are Windows-only, which is the package's main structural constraint. Recent releases have been spent absorbing and then unwinding a fault in the officedown dependency.
◆ Where it's heading
The package's own development is focused on the details that make output genuinely accessible rather than merely produced — PDF bookmarks generated from Word headings, image dimension handling, header behaviour in slide output. That work is intermittent, and the more visible pattern in 2025 is dependency fragility: a CRAN check failure traced to a strsplit() call inside officedown forced a temporary patch, which was reverted two weeks later once upstream fixed it. Depending on a chain of document-conversion tools means the package inherits their breakages.
◆ Prediction
The next release will likely be another response to an upstream document-tooling change, though the pdf_args work suggests further OfficeToPDF options could be exposed if accessibility gaps surface.
profileCI
0.0INFRA · APIS
Profile-likelihood confidence intervals for any fitted model, in a feed that publishes out of order.
◆ Current state
profileCI computes confidence intervals from the profile log-likelihood for user-supplied fitted models, generalising what confint.glm does for GLMs to any model object exposing a log-likelihood. The releases handle the awkward cases that make profiling fail in practice: infinite limits when the profile never drops below the interval threshold, bounded profiling ranges, and interpolation that breaks down near the limits. Only convex log-likelihoods are supported, so disjoint intervals are out of scope by design.
◆ Where it's heading
Work is concentrated on numerical reliability rather than scope: 1.1.1 replaced quadratic with monotonic cubic spline interpolation because the quadratic form could fail, and corrected parameter values stored near the confidence limits. The feed publishes these out of order, with the v1.0.0 entry stamped six months after v1.1.0 and carrying the package's full description rather than a changelog, so release order should be read from the version numbers rather than the dates. The same maintainer's revdbayes has been in pure maintenance across this period, which places profileCI as the more active project.
◆ Prediction
Expect further robustness work at the profiling limits and more logLikFn methods for common model classes, following the nls method added in 1.1.0.
Alternatives to accessr and profileCI
Other Infra & APIs 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 accessr or profileCI.
SLmetrics
A young ML metrics package rewrote its own backend twice in six months chasing speed.
traits.build
The AusTraits engine, generalised for anyone's trait database, now links measurements to real specimens.
rwasm
The toolchain that gets R packages into the browser is optimising for payload size, not features.
Fail2Ban
Fail2Ban finally ships 1.1.1 after 14 months in beta, with a botched deb package on the way out the door
plogr
A logging header for Rcpp packages that sat untouched for nine years, then changed how it switches on
See all accessr alternatives → · See all profileCI alternatives →
Recent activity from accessr and profileCI
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6mo agoprofileCICubic spline interpolation replaces a quadratic that could fail
- 7mo agoprofileCICRAN 1.0.0 release of profile-likelihood interval computation
- 1y agoprofileCIInfinite limits and bounded profiling ranges handled
- 1y agoaccessrTemporary officedown workaround reverted
- 1y agoaccessrTemporary patch for CRAN failures from officedown
- 1y agoaccessrPDF bookmarks from Word headings by default
- 2y agoaccessraccessr: Command Line Tools to Produce Accessible Documents using 'R Markdown' v1.0.1
Frequently asked questions
What is the difference between accessr and profileCI?
Both compete on the same themes — r-package — within Infra & APIs. accessr and profileCI 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 accessr better than profileCI?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. accessr and profileCI 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 Infra & APIs products to evaluate alongside.
What are the best alternatives to accessr?
Top accessr alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "accessr alternatives" section above for the current picks, or visit /alternatives/accessr for the full list with editorial commentary on each.
What are the best alternatives to profileCI?
Top profileCI alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "profileCI alternatives" section above for the current picks, or visit /alternatives/profileci for the full list with editorial commentary on each.