dplyr - A Grammar of Data Manipulation
A fast, consistent tool for working with data frame like objects, both in memory and out of memory.
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data-manipulationgrammarcpp
25.31 score 5.1k stars 9.9k dependents 846k scripts 1.8M downloads
tidyr - Tidy Messy Data
Tools to help to create tidy data, where each column is a variable, each row is an observation, and each cell contains a single value. 'tidyr' contains tools for changing the shape (pivoting) and hierarchy (nesting and 'unnesting') of a dataset, turning deeply nested lists into rectangular data frames ('rectangling'), and extracting values out of string columns. It also includes tools for working with missing values (both implicit and explicit).
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tidy-datacpp
23.48 score 1.4k stars 7.1k dependents 316k scripts 1.2M downloads
purrr - Functional Programming Tools
A complete and consistent functional programming toolkit for R.
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functional-programming
22.80 score 1.4k stars 8.4k dependents 83k scripts 1.2M downloads
stringr - Simple, Consistent Wrappers for Common String Operations
A consistent, simple and easy to use set of wrappers around the fantastic 'stringi' package. All function and argument names (and positions) are consistent, all functions deal with "NA"'s and zero length vectors in the same way, and the output from one function is easy to feed into the input of another.
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regular-expressionstrings
22.16 score 673 stars 9.7k dependents 202k scripts 1.1M downloads
testthat - Unit Testing for R
Software testing is important, but, in part because it is frustrating and boring, many of us avoid it. 'testthat' is a testing framework for R that is easy to learn and use, and integrates with your existing 'workflow'.
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unit-testingcpp
21.69 score 942 stars 455 dependents 98k scripts 786k downloadshttr - Tools for Working with URLs and HTTP
Useful tools for working with HTTP organised by HTTP verbs (GET(), POST(), etc). Configuration functions make it easy to control additional request components (authenticate(), add_headers() and so on).
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apicurlhttp
21.08 score 983 stars 4.1k dependents 40k scripts 1.2M downloads
tidyverse - Easily Install and Load the 'Tidyverse'
The 'tidyverse' is a set of packages that work in harmony because they share common data representations and 'API' design. This package is designed to make it easy to install and load multiple 'tidyverse' packages in a single step. Learn more about the 'tidyverse' at <https://www.tidyverse.org>.
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data-sciencetidyverse
20.32 score 1.8k stars 121 dependents 999k scripts 920k downloads
rvest - Easily Harvest (Scrape) Web Pages
Wrappers around the 'xml2' and 'httr' packages to make it easy to download, then manipulate, HTML and XML.
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htmlweb-scraping
19.93 score 1.5k stars 642 dependents 30k scripts 439k downloads
haven - Import and Export 'SPSS', 'Stata' and 'SAS' Files
Import foreign statistical formats into R via the embedded 'ReadStat' C library, <https://github.com/WizardMac/ReadStat>.
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sasspssstatazlibcpp
19.82 score 453 stars 806 dependents 37k scripts 512k downloads
dbplyr - A 'dplyr' Back End for Databases
A 'dplyr' back end for databases that allows you to work with remote database tables as if they are in-memory data frames. Basic features work with any database that has a 'DBI' back end; more advanced features require 'SQL' translation to be provided by the package author.
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database
19.82 score 518 stars 1.1k dependents 6.1k scripts 462k downloads
roxygen2 - In-Line Documentation for R
Generate your Rd documentation, 'NAMESPACE' file, and collation field using specially formatted comments. Writing documentation in-line with code makes it easier to keep your documentation up-to-date as your requirements change. 'roxygen2' is inspired by the 'Doxygen' system for C++.
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devtoolsdocumentationcpp
19.65 score 663 stars 234 dependents 2.7k scripts 272k downloadsS7 - An Object Oriented System Meant to Become a Successor to S3 and S4
A new object oriented programming system designed to be a successor to S3 and S4. It includes formal class, generic, and method specification, and a limited form of multiple dispatch. It has been designed and implemented collaboratively by the R Consortium Object-Oriented Programming Working Group, which includes representatives from R-Core, 'Bioconductor', 'Posit'/'tidyverse', and the wider R community.
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19.48 score 495 stars 9.4k dependents 740 scripts 1.4M downloads
forcats - Tools for Working with Categorical Variables (Factors)
Helpers for reordering factor levels (including moving specified levels to front, ordering by first appearance, reversing, and randomly shuffling), and tools for modifying factor levels (including collapsing rare levels into other, 'anonymising', and manually 'recoding').
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factortidyverse
19.13 score 557 stars 1.4k dependents 44k scripts 499k downloads
httr2 - Perform HTTP Requests and Process the Responses
Tools for creating and modifying HTTP requests, then performing them and processing the results. 'httr2' is a modern re-imagining of 'httr' that uses a pipe-based interface and solves more of the problems that API wrapping packages face.
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http
18.28 score 272 stars 2.0k dependents 5.6k scripts 391k downloadsplyr - Tools for Splitting, Applying and Combining Data
A set of tools that solves a common set of problems: you need to break a big problem down into manageable pieces, operate on each piece and then put all the pieces back together. For example, you might want to fit a model to each spatial location or time point in your study, summarise data by panels or collapse high-dimensional arrays to simpler summary statistics. The development of 'plyr' has been generously supported by 'Becton Dickinson'.
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cpp
18.19 score 504 stars 3.2k dependents 74k scripts 516k downloads
pkgdown - Make Static HTML Documentation for a Package
Generate an attractive and useful website from a source package. 'pkgdown' converts your documentation, vignettes, 'README', and more to 'HTML' making it easy to share information about your package online.
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documentation-toolquarto
18.08 score 776 stars 155 dependents 718 scripts 214k downloadsreshape2 - Flexibly Reshape Data: A Reboot of the Reshape Package
Flexibly restructure and aggregate data using just two functions: melt and 'dcast' (or 'acast').
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cpp
17.52 score 214 stars 2.2k dependents 97k scripts 491k downloadsyaml - Methods to Convert R Data to YAML and Back
Implements the 'libyaml' 'YAML' 1.1 parser and emitter (<https://pyyaml.org/wiki/LibYAML>) for R.
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yaml
17.14 score 169 stars 6.0k dependents 177 scripts 1.1M downloads
odbc - Connect to ODBC Compatible Databases (using the DBI Interface)
A DBI-compatible interface to ODBC databases.
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databaseodbcunixodbccpp
16.58 score 418 stars 32 dependents 3.9k scripts 78k downloadslazyeval - Lazy (Non-Standard) Evaluation
An alternative approach to non-standard evaluation using formulas. Provides a full implementation of LISP style 'quasiquotation', making it easier to generate code with other code.
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16.41 score 134 stars 2.1k dependents 1.2k scripts 470k downloads
modelr - Modelling Functions that Work with the Pipe
Functions for modelling that help you seamlessly integrate modelling into a pipeline of data manipulation and visualisation.
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modelling
16.34 score 399 stars 1.2k dependents 6.2k scripts 481k downloads
ellmer - Chat with Large Language Models
Chat with large language models from a range of providers including 'Claude' <https://claude.ai>, 'OpenAI' <https://chatgpt.com>, and more. Supports streaming, asynchronous calls, tool calling, and structured data extraction.
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16.18 score 617 stars 50 dependents 1.9k scripts 13k downloads
dtplyr - Data Table Back-End for 'dplyr'
Provides a data.table backend for 'dplyr'. The goal of 'dtplyr' is to allow you to write 'dplyr' code that is automatically translated to the equivalent, but usually much faster, data.table code.
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datatabledplyr
16.15 score 675 stars 146 dependents 3.9k scripts 357k downloadsassertthat - Easy Pre and Post Assertions
An extension to stopifnot() that makes it easy to declare the pre and post conditions that you code should satisfy, while also producing friendly error messages so that your users know what's gone wrong.
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15.13 score 213 stars 1.1k dependents 3.2k scripts 183k downloadsconflicted - An Alternative Conflict Resolution Strategy
R's default conflict management system gives the most recently loaded package precedence. This can make it hard to detect conflicts, particularly when they arise because a package update creates ambiguity that did not previously exist. 'conflicted' takes a different approach, making every conflict an error and forcing you to choose which function to use.
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conflicts
14.05 score 254 stars 147 dependents 8.1k scripts 352k downloadsevaluate - Parsing and Evaluation Tools that Provide More Details than the Default
Parsing and evaluation tools that make it easy to recreate the command line behaviour of R.
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evaluationparsingrepl
13.79 score 138 stars 5.1k dependents 2 scripts 1.0M downloadswaldo - Find Differences Between R Objects
Compare complex R objects and reveal the key differences. Designed particularly for use in testing packages where being able to quickly isolate key differences makes understanding test failures much easier.
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difftesting
13.65 score 301 stars 472 dependents 301 scripts 530k downloadsrappdirs - Application Directories: Determine Where to Save Data, Caches, and Logs
An easy way to determine which directories on the users computer you should use to save data, caches and logs. A port of Python's 'Appdirs' (<https://github.com/ActiveState/appdirs>) to R.
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appdir
13.39 score 92 stars 5.9k dependents 1 scripts 999k downloadsprofvis - Interactive Visualizations for Profiling R Code
Interactive visualizations for profiling R code.
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13.11 score 314 stars 139 dependents 14 scripts 176k downloadspool - Object Pooling
Enables the creation of object pools, which make it less computationally expensive to fetch a new object. Currently the only supported pooled objects are 'DBI' connections.
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13.10 score 255 stars 30 dependents 988 scripts 13k downloadsgenerics - Common S3 Generics not Provided by Base R Methods Related to Model Fitting
In order to reduce potential package dependencies and conflicts, generics provides a number of commonly used S3 generics.
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13.09 score 60 stars 12k dependents 3 scripts 1.3M downloads
lobstr - Visualize R Data Structures with Trees
A set of tools for inspecting and understanding R data structures inspired by str(). Includes ast() for visualizing abstract syntax trees, ref() for showing shared references, cst() for showing call stack trees, and obj_size() for computing object sizes.
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cpp
12.97 score 314 stars 63 dependents 916 scripts 52k downloadsfeather - R Bindings to the Feather 'API'
Read and write feather files, a lightweight binary columnar data store designed for maximum speed.
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12.80 score 2.8k stars 3 dependents 3.9k scripts 23k downloadsdownlit - Syntax Highlighting and Automatic Linking
Syntax highlighting of R code, specifically designed for the needs of 'RMarkdown' packages like 'pkgdown', 'hugodown', and 'bookdown'. It includes linking of function calls to their documentation on the web, and automatic translation of ANSI escapes in output to the equivalent HTML.
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syntax-highlighting
12.49 score 90 stars 169 dependents 330 scripts 136k downloadsbigrquery - An Interface to Google's 'BigQuery' 'API'
Easily talk to Google's 'BigQuery' database from R.
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bigquerydatabasecpp
12.35 score 530 stars 4 dependents 2.1k scripts 12k downloadsellipsis - Tools for Working with ...
The ellipsis is a powerful tool for extending functions. Unfortunately this power comes at a cost: misspelled arguments will be silently ignored. The ellipsis package provides a collection of functions to catch problems and alert the user.
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dot-dot-dotellipsis
12.14 score 139 stars 166 dependents 96 scripts 260k downloadsnycflights13 - Flights that Departed NYC in 2013
Airline on-time data for all flights departing NYC in 2013. Also includes useful 'metadata' on airlines, airports, weather, and planes.
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11.97 score 133 stars 3 dependents 12k scripts 121k downloadsproto - Prototype Object-Based Programming
An object oriented system using object-based, also called prototype-based, rather than class-based object oriented ideas.
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11.48 score 11 stars 114 dependents 641 scripts 25k downloadsbabynames - US Baby Names 1880-2017
US baby names provided by the SSA. This package contains all names used for at least 5 children of either sex.
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data
10.97 score 140 stars 4 dependents 2.3k scripts 81k downloadsmultidplyr - A Multi-Process 'dplyr' Backend
Partition a data frame across multiple worker processes to provide simple multicore parallelism.
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dplyrmultiprocess
10.63 score 650 stars 5 dependents 544 scripts 862 downloadslog4r - A Fast and Lightweight Logging System for R, Based on 'log4j'
Provides a fast, lightweight, object-oriented approach to logging based on the widely-emulated 'log4j' system and etymology. Loggers write messages to one or more destinations, such as the console, a file, or a remote server, using a format you control. Messages below the chosen severity threshold are discarded cheaply, so logging calls can be left in production code.
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logging
10.48 score 101 stars 5 dependents 328 scripts 3.4k downloadsreshape - Flexibly Reshape Data
Flexibly restructure and aggregate data using just two functions: melt and cast.
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9.93 score 217 dependents 22k scripts 59k downloadsmockery - Mocking Library for R
The two main functionalities of this package are creating mock objects (functions) and selectively intercepting calls to a given function that originate in some other function. It can be used with any testing framework available for R. Mock objects can be injected with either this package's own stub() function or a similar with_mocked_binding() facility present in the 'testthat' package.
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9.62 score 104 stars 4 dependents 9 scripts 61k downloadspurrrlyr - Tools at the Intersection of 'purrr' and 'dplyr'
Some functions at the intersection of 'dplyr' and 'purrr' that formerly lived in 'purrr'.
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cpp
9.29 score 101 stars 5 dependents 305 scripts 3.4k downloadsrdtools - Efficient Manipulation of 'Rd' Files and Help Topics
Provides fast, cached lookup of help topics and aliases across installed, source, and in-development packages, plus efficient retrieval of parsed 'Rd' ('R' documentation) objects. Per-package indexes are built once and cached, making repeated retrieval cheap enough to call in a tight loop.
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8.83 score 5 stars 231 dependents 197k downloads
sloop - Helpers for 'OOP' in R
A collection of helper functions designed to help you to better understand object oriented programming in R, particularly using 'S3'.
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r6s3s4
7.66 score 104 stars 2 dependents 244 scripts 2.0k downloadsproductplots - Product Plots for R
Framework for visualising tables of counts, proportions and probabilities. The framework is called product plots, alluding to the computation of area as a product of height and width, and the statistical concept of generating a joint distribution from the product of conditional and marginal distributions. The framework, with extensions, is sufficient to encompass over 20 visualisations previously described in fields of statistical graphics and 'infovis', including bar charts, mosaic plots, 'treemaps', equal area plots and fluctuation diagrams.
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6.78 score 30 stars 3 dependents 95 scripts 2.4k downloadscubelyr - A Data Cube 'dplyr' Backend
An implementation of a data cube extracted out of 'dplyr' for backward compatibility.
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6.75 score 40 stars 4 dependents 89 scripts 2.6k downloadsggplot2movies - Movies Data
A dataset about movies. This was previously contained in ggplot2, but has been moved its own package to reduce the download size of ggplot2.
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6.57 score 8 stars 1.4k scripts 35k downloadsggvis - Interactive Grammar of Graphics
An implementation of an interactive grammar of graphics, taking the best parts of 'ggplot2', combining them with the reactive framework of 'shiny' and drawing web graphics using 'vega'.
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6.56 score 1 stars 7 dependents 1.9k scripts 2.6k downloadslvplot - Letter Value 'Boxplots'
Implements the letter value 'boxplot' which extends the standard 'boxplot' to deal with both larger and smaller number of data points by dynamically selecting the appropriate number of letter values to display.
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6.15 score 38 stars 372 scripts 628 downloadsfueleconomy - EPA Fuel Economy Data
Fuel economy data from the EPA, 1985-2015, conveniently packaged for consumption by R users.
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6.06 score 17 stars 2 dependents 176 scripts 1.3k downloadsdiffviewer - HTML Widget to Show File Differences
A HTML widget that shows differences between files (text, images, and data frames).
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diffhtmlwidgets
5.89 score 66 stars 7.9k downloadsnasaweather - Collection of Datasets from the ASA 2006 Data Expo
Tidied data from the ASA 2006 data expo, as well as a number of useful other related data sets.
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5.82 score 13 stars 2 dependents 136 scripts 1.2k downloadsprofr - An Alternative Display for Profiling Information
An alternative data structure and visual rendering for the profiling information generated by Rprof.
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5.25 score 31 stars 115 scripts 320 downloadshflights - Flights that departed Houston in 2011
A data only package containing commercial domestic flights that departed Houston (IAH and HOU) in 2011.
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4.89 score 4 stars 384 scripts 974 downloadshighlight - Syntax Highlighter
Syntax highlighter for R code based on the results of the R parser. Rendering in HTML and latex markup. Custom Sweave driver performing syntax highlighting of R code chunks.
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cpp
4.70 score 1 stars 4 dependents 83 scripts 974 downloadsmeifly - Interactive Model Exploration using 'GGobi'
Exploratory model analysis with <http://ggobi.org>. Fit and graphical explore ensembles of linear models.
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3.57 score 17 stars 22 scripts 237 downloads