jsonlite - A Simple and Robust JSON Parser and Generator for R
A reasonably fast JSON parser and generator, optimized for statistical data and the web. Offers simple, flexible tools for working with JSON in R, and is particularly powerful for building pipelines and interacting with a web API. The implementation is based on the mapping described in the vignette (Ooms, 2014). In addition to converting JSON data from/to R objects, 'jsonlite' contains functions to stream, validate, and prettify JSON data. The unit tests included with the package verify that all edge cases are encoded and decoded consistently for use with dynamic data in systems and applications.
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jsonparser
21.29 score 402 stars 9.3k dependents 60k scripts 1.5M downloads
fs - Cross-Platform File System Operations Based on 'libuv'
A cross-platform interface to file system operations, built on top of the 'libuv' C library.
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filesystemlibuvlibuv1cpp
20.79 score 384 stars 6.0k dependents 17k scripts 1.8M downloadscurl - A Modern and Flexible Web Client for R
Bindings to 'libcurl' <https://curl.se/libcurl/> for performing fully configurable HTTP/FTP requests where responses can be processed in memory, on disk, or streaming via the callback or connection interfaces. Some knowledge of 'libcurl' is recommended; for a more-user-friendly web client see the 'httr2' package which builds on this package with http specific tools and logic.
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curl
19.97 score 232 stars 6.1k dependents 6.3k scripts 1.4M downloadsxml2 - Parse XML
Bindings to 'libxml2' for working with XML data using a simple, consistent interface based on 'XPath' expressions. Also supports XML schema validation; for 'XSLT' transformations see the 'xslt' package.
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libxml2xmlcpp
19.32 score 223 stars 2.7k dependents 10k scripts 830k downloadsmagick - Advanced Graphics and Image-Processing in R
Bindings to 'ImageMagick': the most comprehensive open-source image processing library available. Supports many common formats (png, jpeg, tiff, pdf, etc) and manipulations (rotate, scale, crop, trim, flip, blur, etc). All operations are vectorized via the Magick++ STL meaning they operate either on a single frame or a series of frames for working with layers, collages, or animation. In RStudio images are automatically previewed when printed to the console, resulting in an interactive editing environment. Also includes a graphics device for creating drawing onto images using pixel coordinates.
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image-manipulationimage-processingimagemagickcpp
18.05 score 481 stars 309 dependents 18k scripts 203k downloads
V8 - Embedded JavaScript and WebAssembly Engine for R
An R interface to V8 <https://v8.dev>: Google's open source JavaScript and WebAssembly engine. This package can be compiled either with V8 or NodeJS when built as a shared library.
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javascriptlibv8wasmcpp
16.49 score 207 stars 445 dependents 616 scripts 536k downloads
gert - Simple Git Client for R
Simple git client for R based on 'libgit2' <https://libgit2.org> with support for SSH and HTTPS remotes. All functions in 'gert' use basic R data types (such as vectors and data-frames) for their arguments and return values. User credentials are shared with command line 'git' through the git-credential store and ssh keys stored on disk or ssh-agent.
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15.51 score 162 stars 388 dependents 489 scripts 236k downloadspdftools - Text Extraction, Rendering and Converting of PDF Documents
Utilities based on 'libpoppler' <https://poppler.freedesktop.org> for extracting text, fonts, attachments and metadata from a PDF file. Also supports high quality rendering of PDF documents into PNG, JPEG, TIFF format, or into raw bitmap vectors for further processing in R.
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pdf-filespdf-formatpdftoolspopplerpoppler-librarytext-extractioncpp
14.49 score 553 stars 63 dependents 5.0k scripts 146k downloadssys - Powerful and Reliable Tools for Running System Commands in R
Drop-in replacements for the base system2() function with fine control and consistent behavior across platforms. Supports clean interruption, timeout, background tasks, and streaming STDIN / STDOUT / STDERR over binary or text connections. Arguments on Windows automatically get encoded and quoted to work on different locales.
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14.27 score 106 stars 5.3k dependents 311 scripts 721k downloadscommonmark - High Performance CommonMark and Github Markdown Rendering in R
The CommonMark specification <https://github.github.com/gfm/> defines a rationalized version of markdown syntax. This package uses the 'cmark' reference implementation for converting markdown text into various formats including html, latex and groff man. In addition it exposes the markdown parse tree in xml format. Also includes opt-in support for GFM extensions including tables, autolinks, and strikethrough text.
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cmarkcmark-gfmgfmmarkdown
13.48 score 101 stars 2.6k dependents 135 scripts 824k downloadsRMySQL - Database Interface and 'MySQL' Driver for R
Legacy 'DBI' interface to 'MySQL' / 'MariaDB' based on old code ported from S-PLUS. A modern 'MySQL' client written in 'C++' is available from the 'RMariaDB' package.
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databasemysql
13.45 score 208 stars 14 dependents 5.7k scripts 37k downloadshunspell - High-Performance Stemmer, Tokenizer, and Spell Checker
Low level spell checker and morphological analyzer based on the famous 'hunspell' library <https://hunspell.github.io>. The package can analyze or check individual words as well as parse text, latex, html or xml documents. For a more user-friendly interface use the 'spelling' package which builds on this package to automate checking of files, documentation and vignettes in all common formats.
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hunspellspell-checkspellcheckerstemmertokenizercpp
12.93 score 116 stars 38 dependents 547 scripts 97k downloadssodium - A Modern and Easy-to-Use Crypto Library
Bindings to 'libsodium' <https://doc.libsodium.org/>: a modern, easy-to-use software library for encryption, decryption, signatures, password hashing and more. Sodium uses curve25519, a state-of-the-art Diffie-Hellman function by Daniel Bernstein, which has become very popular after it was discovered that the NSA had backdoored Dual EC DRBG.
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libsodium
12.76 score 72 stars 61 dependents 469 scripts 116k downloadsaskpass - Password Entry Utilities for R, Git, and SSH
Cross-platform utilities for prompting the user for credentials or a passphrase, for example to authenticate with a server or read a protected key. Includes native programs for MacOS and Windows, hence no 'tcltk' is required. Password entry can be invoked in two different ways: directly from R via the askpass() function, or indirectly as password-entry back-end for 'ssh-agent' or 'git-credential' via the SSH_ASKPASS and GIT_ASKPASS environment variables. Thereby the user can be prompted for credentials or a passphrase if needed when R calls out to git or ssh.
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12.73 score 88 stars 5.2k dependents 105 scripts 749k downloads
credentials - Tools for Managing SSH and Git Credentials
Setup and retrieve HTTPS and SSH credentials for use with 'git' and other services. For HTTPS remotes the package interfaces the 'git-credential' utility which 'git' uses to store HTTP usernames and passwords. For SSH remotes we provide convenient functions to find or generate appropriate SSH keys. The package both helps the user to setup a local git installation, and also provides a back-end for git/ssh client libraries to authenticate with existing user credentials.
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gitpasswordssh
12.53 score 75 stars 404 dependents 171 scripts 216k downloadsjose - JavaScript Object Signing and Encryption
Read and write JSON Web Keys (JWK, rfc7517), generate and verify JSON Web Signatures (JWS, rfc7515) and encode/decode JSON Web Tokens (JWT, rfc7519) <https://datatracker.ietf.org/wg/jose/documents/>. These standards provide modern signing and encryption formats that are natively supported by browsers via the JavaScript WebCryptoAPI <https://www.w3.org/TR/webcrypto/#jose>, and used by services like OAuth 2.0, LetsEncrypt, and Github Apps.
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12.19 score 54 stars 58 dependents 384 scripts 106k downloads
rsvg - Render SVG Images into PDF, PNG, (Encapsulated) PostScript, or Bitmap Arrays
Renders vector-based svg images into high-quality custom-size bitmap arrays using 'librsvg2'. The resulting bitmap can be written to e.g. png, jpeg or webp format. In addition, the package can convert images directly to various formats such as pdf or postscript.
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librsvgcairoglib
11.97 score 103 stars 59 dependents 1.2k scripts 42k downloadstesseract - Open Source OCR Engine
Bindings to 'Tesseract': a powerful optical character recognition (OCR) engine that supports over 100 languages. The engine is highly configurable in order to tune the detection algorithms and obtain the best possible results.
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ocrtesseracttesseract-ocrcpp
11.15 score 251 stars 578 scripts 98k downloadsqpdf - Split, Combine and Compress PDF Files
Content-preserving transformations transformations of PDF files such as split, combine, and compress. This package interfaces directly to the 'qpdf' C++ library <https://qpdf.sourceforge.io/> and does not require any command line utilities. Note that 'qpdf' does not read actual content from PDF files: to extract text and data you need the 'pdftools' package.
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libjpeg-turbozlibcpp
11.05 score 63 stars 96 dependents 328 scripts 48k downloadsspelling - Tools for Spell Checking in R
Spell checking common document formats including latex, markdown, manual pages, and description files. Includes utilities to automate checking of documentation and vignettes as a unit test during 'R CMD check'. Both British and American English are supported out of the box and other languages can be added. In addition, packages may define a 'wordlist' to allow custom terminology without having to abuse punctuation.
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spell-checkspell-checkerspellcheckspellcheckerspelling
11.03 score 108 stars 13 dependents 254 scripts 101k downloadsssh - Secure Shell (SSH) Client for R
Connect to a remote server over SSH to transfer files via SCP, setup a secure tunnel, or run a command or script on the host while streaming stdout and stderr directly to the client.
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libsshsshssh-client
10.84 score 130 stars 12 dependents 188 scripts 2.2k downloads
mongolite - Fast and Simple 'MongoDB' Client for R
High-performance MongoDB client based on 'mongo-c-driver' and 'jsonlite'. Includes support for aggregation, indexing, map-reduce, streaming, encryption, enterprise authentication, and GridFS. The online user manual provides an overview of the available methods in the package: <https://jeroen.github.io/mongolite/>.
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cyrus-sasl2opensslglibczlib
10.25 score 289 stars 15 dependents 1.1k scripts 3.2k downloadsgifski - Highest Quality GIF Encoder
Multi-threaded GIF encoder written in Rust: <https://gif.ski/>. Converts images to GIF animations using pngquant's efficient cross-frame palettes and temporal dithering with thousands of colors per frame.
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rustcargo
10.12 score 75 stars 11 dependents 3.9k scripts 28k downloadsav - Working with Audio and Video in R
Bindings to 'FFmpeg' <http://www.ffmpeg.org/> AV library for working with audio and video in R. Generates high quality video from images or R graphics with custom audio. Also offers high performance tools for reading raw audio, creating 'spectrograms', and converting between countless audio / video formats. This package interfaces directly to the C API and does not require any command line utilities.
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ffmpeg
10.01 score 94 stars 17 dependents 758 scripts 14k downloadsjqr - Client for 'jq', a 'JSON' Processor
Client for 'jq', a 'JSON' processor (<https://jqlang.github.io/jq/>), written in C. 'jq' allows the following with 'JSON' data: index into, parse, do calculations, cut up and filter, change key names and values, perform conditionals and comparisons, and more.
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jqjson
9.55 score 144 stars 35 dependents 108 scripts 7.3k downloads
katex - Rendering Math to HTML, 'MathML', or R-Documentation Format
Convert latex math expressions to HTML and 'MathML' for use in markdown documents or package manual pages. The rendering is done in R using the V8 engine (i.e. server-side), which eliminates the need for embedding the 'MathJax' library into your web pages. In addition a 'math-to-rd' wrapper is provided to automatically render beautiful math in R documentation files.
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9.03 score 36 stars 12 dependents 52 scripts 32k downloadsjs - Tools for Working with JavaScript in R
A set of utilities for working with JavaScript syntax in R. Includes tools to parse, tokenize, compile, validate, reformat, optimize and analyze JavaScript code.
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8.91 score 67 stars 1 dependents 112 scripts 3.6k downloadswebutils - Utility Functions for Developing Web Applications
Parses http request data in application/json, multipart/form-data, or application/x-www-form-urlencoded format. Includes example of hosting and parsing html form data in R using either 'httpuv' or 'Rhttpd'.
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8.54 score 23 stars 45 dependents 7 scripts 111k downloads
opencpu - Producing and Reproducing Results
A system for embedded scientific computing and reproducible research with R as described in <doi:10.48550/arXiv.1406.4806>. The OpenCPU server exposes a simple but powerful HTTP api for RPC and data interchange with R. This provides a reliable and scalable foundation for statistical services or building R web applications. The OpenCPU server runs either as a single-user development server within the interactive R session, or as a multi-user Linux stack based on Apache2. The entire system is fully open source and permissively licensed. The OpenCPU website has detailed documentation and example apps.
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8.37 score 760 stars 2 dependents 205 scripts 918 downloadsxslt - Extensible Style-Sheet Language Transformations
An extension for the 'xml2' package to transform XML documents by applying an 'xslt' style-sheet.
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xmlxsltlibxsltlibxml2cpp
8.24 score 29 stars 18 dependents 86 scripts 13k downloadsprotolite - Highly Optimized Protocol Buffer Serializers
Pure C++ implementations for reading and writing several common data formats based on Google protocol-buffers. Currently supports 'rexp.proto' for serialized R objects, 'geobuf.proto' for binary geojson, and 'mvt.proto' for vector tiles. This package uses the auto-generated C++ code by protobuf-compiler, hence the entire serialization is optimized at compile time. The 'RProtoBuf' package on the other hand uses the protobuf runtime library to provide a general- purpose toolkit for reading and writing arbitrary protocol-buffer data in R.
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protobufcpp
7.57 score 49 stars 20 dependents 35 scripts 7.2k downloadsunix - POSIX System Utilities
Bindings to system utilities found in most Unix systems such as POSIX functions which are not part of the Standard C Library.
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apparmor
7.55 score 22 stars 1 dependents 330 scripts 3.3k downloadscld2 - Google's Compact Language Detector 2
Bindings to Google's C++ library Compact Language Detector 2 (see <https://github.com/cld2owners/cld2#readme> for more information). Probabilistically detects over 80 languages in plain text or HTML. For mixed-language input it returns the top three detected languages and their approximate proportion of the total classified text bytes (e.g. 80% English and 20% French out of 1000 bytes). There is also a 'cld3' package on CRAN which uses a neural network model instead.
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cldcld2language-detectionlanguage-detectorcpp
7.48 score 39 stars 2 dependents 199 scripts 1.6k downloads
webp - A New Format for Lossless and Lossy Image Compression
Lossless webp images are 26% smaller in size compared to PNG. Lossy webp images are 25-34% smaller in size compared to JPEG. This package reads and writes webp images into a 3 (rgb) or 4 (rgba) channel bitmap array using conventions from the 'jpeg' and 'png' packages.
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libwebp
7.37 score 17 stars 3 dependents 16 scripts 95k downloadsjsonld - JSON for Linking Data
JSON-LD <https://www.w3.org/TR/json-ld/> is a light-weight syntax for expressing linked data. It is primarily intended for web-based programming environments, interoperable web services and for storing linked data in JSON-based databases. This package provides bindings to the JavaScript library for converting, expanding and compacting JSON-LD documents.
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json-ld
7.22 score 35 stars 13 dependents 82 scripts 3.0k downloads
opencv - Bindings to 'OpenCV' Computer Vision Library
Exposes some of the available 'OpenCV' <https://opencv.org/> algorithms, such as a QR code scanner, and edge, body or face detection. These can either be applied to analyze static images, or to filter live video footage from a camera device.
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opencvopencv-libraryunconfunconf18cpp
7.19 score 141 stars 110 scripts 577 downloadsantiword - Extract Text from Microsoft Word Documents
Wraps the 'AntiWord' utility to extract text from Microsoft Word documents. The utility only supports the old 'doc' format, not the new xml based 'docx' format. Use the 'xml2' package to read the latter.
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antiwordextract-text
7.18 score 59 stars 9 dependents 16 scripts 5.9k downloadsbase64 - Base64 Encoder and Decoder
Compatibility wrapper to replace the orphaned package. New applications should use base64 encoders from 'jsonlite' or 'openssl' or 'base64enc'.
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6.83 score 2 stars 44 dependents 376 scripts 6.7k downloadsbrotli - A Compression Format Optimized for the Web
A lossless compressed data format that uses a combination of the LZ77 algorithm and Huffman coding <https://www.rfc-editor.org/rfc/rfc7932>. Brotli is similar in speed to deflate (gzip) but offers more dense compression.
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6.76 score 2 stars 12 dependents 20 scripts 4.0k downloadscld3 - Google's Compact Language Detector 3
Google's Compact Language Detector 3 is a neural network model for language identification and the successor of 'cld2' (available from CRAN). The algorithm is still experimental and takes a novel approach to language detection with different properties and outcomes. It can be useful to combine this with the Bayesian classifier results from 'cld2'. See <https://github.com/google/cld3#readme> for more information.
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cldcld3language-detectionlanguage-detectorprotobufcpp
6.50 score 43 stars 1 dependents 105 scripts 1.6k downloadsrzmq - R Bindings for 'ZeroMQ'
Interface to the 'ZeroMQ' lightweight messaging kernel (see <https://zeromq.org/> for more information).
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zeromqzmqzeromq3cpp
6.48 score 87 stars 100 scripts 417 downloadsgraphql - A GraphQL Query Parser
Bindings to the 'libgraphqlparser' C++ library. Parses GraphQL <https://graphql.org> syntax and exports the AST in JSON format.
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graphqllibgraphqlcpp
6.15 score 39 stars 6 dependents 7 scripts 935 downloadsbcrypt - 'Blowfish' Key Derivation and Password Hashing
Bindings to the 'blowfish' password hashing algorithm <https://www.openbsd.org/papers/bcrypt-paper.pdf> derived from the 'OpenBSD' implementation.
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5.55 score 18 stars 1 dependents 119 scripts 1.1k downloadsgpg - GNU Privacy Guard for R
Bindings to GnuPG for working with OpenGPG (RFC4880) cryptographic methods. Includes utilities for public key encryption, creating and verifying digital signatures, and managing your local keyring. Some functionality depends on the version of GnuPG that is installed on the system. On Windows this package can be used together with 'GPG4Win' which provides a GUI for managing keys and entering passphrases.
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gpgme
4.99 score 21 stars 31 scripts 123 downloads
unrtf - Extract Text from Rich Text Format (RTF) Documents
Wraps the 'unrtf' utility <https://www.gnu.org/software/unrtf/> to extract text from RTF files. Supports document conversion to HTML, LaTeX or plain text. Output in HTML is recommended because 'unrtf' has limited support for converting between character encodings.
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extract-textrtfunrtf
4.35 score 15 stars 15 scripts 407 downloadstoml - Read, Write, and Modify TOML Files
Simple toolkit for working with TOML text. Based on tomledit which allows for modifying TOML while preserving order, comments,and whitespace.
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4.09 score 4 stars 9 scripts 1.0k downloadsfluidsynth - Read and Play Digital Music (MIDI)
Bindings to 'libfluidsynth' to parse and synthesize MIDI files. It can read MIDI into a data frame, play it on the local audio device, or convert into an audio file.
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fluidsynthlibsdl3
4.02 score 14 stars 15 scripts 363 downloadsghapps - Authenticate as a 'GitHub' App
'GitHub' apps provide a powerful way to manage fine grained programmatic access to specific 'git' repositories, without having to create dummy users, and which are safer than a personal access token for automated tasks. This package extends the 'gh' package to let you authenticate and interact with 'GitHub' <https://docs.github.com/en/rest/overview> in 'R' as an app.
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4.00 score 20 stars 1 scripts 216 downloadsprismjs - Server-Side Syntax Highlighting
Prism <https://prismjs.com/> is a lightweight, extensible syntax highlighter, built with modern web standards in mind. This package provides server-side rendering in R using 'V8' such that no JavaScript library is required in the resulting HTML documents. Over 400 languages are supported.
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3.88 score 5 stars 1 dependents 3 scripts 274 downloadspostdoc - Minimal and Uncluttered Package Documentation
Generates simple and beautiful one-page HTML reference manuals with package documentation. Math rendering and syntax highlighting are done server-side in R such that no JavaScript libraries are needed in the browser, which makes the documentation portable and fast to load.
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3.78 score 12 stars 4 scripts 307 downloadsuniverse - Tools for Working with R-universe <https://r-universe.dev>
Utilities to interact with the R-universe platform. Includes functions to manage local package repositories, as well as API wrappers for retrieving data and metadata about packages in r-universe.
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3.70 score 10 stars 10 scriptsjenkins - Simple Jenkins Client for R
Manage jobs and builds on your Jenkins CI server <https://jenkins.io/>. Create and edit projects, schedule builds, manage the queue, download build logs, and much more.
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3.28 score 20 stars 19 scripts 5 downloads