Welcoming Repositories Index R Ecosystem

Top Welcoming Open-Source R Repositories

Top welcoming R repositories. Scored by real 90-day external PR merge rates, maintainer review turnaround speed, and first-time contributor success.

Updated daily • Sun, 11 Oct 2026 UTC
Tracked Repos
939
>100 stars verified
Avg Merge Rate
79%
90-day external PRs
Open GFIs
1
Beginner friendly issues
Welcoming Tier
35
S & A Tier maintainers

Ranked R Repositories

Showing top 50 of 939 ranked repositories

RankRepositoryTierScoreMerge RateGood First Issues
#1
Lightweight extension of the base R graphics system
S•Elite72.170.0% -
#2
Reproducible Data Science environments for R with Nix
A•Welcoming67.1100.0% -
#3
Advanced Machine Learning and Visualization
A•Welcoming66.894.7% -
#4
An R-tool for comprehensive science mapping analysis. A package for quantitative research in scientometrics and bibliometrics.
A•Welcoming65.969.7% -
#5
Polars R bindings
A•Welcoming63.875.0%1
#6
R package to compute and plot predictions, slopes, marginal means, and comparisons (contrasts, risk ratios, odds, etc.) for over 100 classes of statistical and ML models. Conduct linear and non-linear hypothesis tests, or equivalence tests. Calculate uncertainty estimates using the delta method, bootstrapping, or simulation-based inference
A•Welcoming63.661.5% -
#7
Development repository for the Bioconductor package 'mixOmics '
A•Welcoming63.6100.0% -
#8
RStudio hex stickers
A•Welcoming63.583.3% -
#9
Run predictions inside the database
A•Welcoming63.497.2% -
#10
Data Analysis and Visualization in R for Ecologists
A•Welcoming63.275.0% -
#11
Easy Handling Discrete Time Markov Chains
A•Welcoming62.975.9% -
#12
openxlsx2 - read, write and modify xlsx files
B•Solid62.3100.0% -
#13
glmmTMB
B•Solid62.175.0% -
#14
Easily generate information-rich, publication-quality tables from R
B•Solid61.888.9% -
#15
:crystal_ball: Easy access to model information for various model objects
B•Solid61.287.5% -
#16
The Predictive Ecosystem Analyzer (PEcAn) is an integrated ecological bioinformatics toolbox.
A•Welcoming61.150.0% -
#17
Dynamic Documents for R
B•Solid60.487.5% -
#18
Area-Proportional Euler and Venn Diagrams with Ellipses
A•Welcoming60.280.0% -
#19
An R package to create styled tables in multiple output formats, with a friendly, modern interface.
A•Welcoming59.8100.0% -
#20
Satellite image time series in R
A•Welcoming59.590.9% -
#21
Microsoft Finance Time Series Forecasting Framework (FinnTS) is a forecasting package that utilizes cutting-edge time series forecasting and parallelization on the cloud to produce accurate forecasts for financial data.
A•Welcoming59.376.9% -
#22
brms R package for Bayesian generalized multivariate non-linear multilevel models using Stan
A•Welcoming59.244.4% -
#23
Static Code Analysis for R
A•Welcoming59.273.7% -
#24
Pipeable steps for feature engineering and data preprocessing to prepare for modeling
A•Welcoming59.1100.0% -
#25
The duckdb R package
A•Welcoming58.960.6% -
#26
An R package for single-cell and spatial omics analysis, integration, interpretation, and visualization.
A•Welcoming58.762.0% -
#27
caret (Classification And Regression Training) R package that contains misc functions for training and plotting classification and regression models
A•Welcoming58.7100.0% -
#28
An implementation of the Language Server Protocol for R
A•Welcoming58.469.2% -
#29B•Solid57.8100.0% -
#30
This R package is designed to obtain USGS or EPA water quality sample data, streamflow data, and metadata directly from web services.
B•Solid57.675.0% -
#31
R's data.table package extends data.frame:
A•Welcoming57.646.2% -
#32
renv: Project environments for R.
A•Welcoming57.570.6% -
#33
:chart_with_upwards_trend: Estimate effects, contrasts and means based on statistical models
A•Welcoming57.190.9% -
#34
Presentation-Ready Data Summary and Analytic Result Tables
A•Welcoming57.192.0% -
#35
Easy interactive web applications with R
B•Solid57.160.0% -
#36
A package written for R focused on baseball analysis. Currently in development.
B•Solid56.785.7% -
#37B•Solid56.6100.0% -
#38
Plotting tool for brain atlases, in ggplot
A•Welcoming56.587.5% -
#39
Difference in Differences with Multiple Periods, website: https://bcallaway11.github.io/did
B•Solid56.475.0% -
#40
R toolkit for single cell genomics
A•Welcoming56.414.0% -
#41
Estimated marginal means
B•Solid56.3100.0% -
#42
Packrat is a dependency management system for R
B•Solid56.2100.0% -
#43
A lightweight version of R Markdown (without using Pandoc or knitr)
A•Welcoming55.988.9% -
#44
Enhancing {ggplot2} plots with statistical analysis 📊📣
A•Welcoming55.968.8% -
#45
rOpenSci Packages: Development, Maintenance, and Peer Review
B•Solid55.766.7% -
#46
Spatial omics analysis toolbox
A•Welcoming55.683.3% -
#47
Miscellaneous R functions
A•Welcoming55.488.9% -
#48
Extra learners for use in mlr3.
A•Welcoming55.488.9% -
#49
Call LLM APIs from R
A•Welcoming55.447.1% -
#50
Exploratory Web Apps for Analyzing Clinical Trial Data
B•Solid55.266.7% -

How to Get Your R PR Merged

1
Check C-Rank™ First: Pick projects with S or A tiers to avoid maintainer ghosts and slow review cycles.
2
Run Local Verification: Ensure test suites and formatting linters pass before opening a pull request.
3
Submit in Maintainer Windows: Check the repository report card to submit when maintainers are most active.

Top R Frameworks & Stacks

Get this week's top welcoming repos + fresh Good First Issues for R

Free weekly email, scoped to R. No account needed - confirm once and unsubscribe anytime.

Frequently Asked Questions: R Open Source

What is the most welcoming R open-source repository?

The highest-ranked R repository on GetMerged is currently grantmcdermott/tinyplot, with a C-Rank score of 72.1/100 and a 70.0% PR merge rate.

How can I find good first issues in R?

You can browse verified beginner-friendly issues in R by visiting our curated Good First Issues directory at getmerged.abhishekco.de/good-first-issue/r.

What makes a R repository ‘Super Welcoming’ on GetMerged?

A ‘Super Welcoming’ (S-Tier) R repository demonstrates an external PR merge rate above 80%, a median first response time within 24 to 48 hours, active review feedback, and clear onboarding documentation.