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Top 17 C++ R Projects
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LightGBM
A fast, distributed, high performance gradient boosting (GBT, GBDT, GBRT, GBM or MART) framework based on decision tree algorithms, used for ranking, classification and many other machine learning tasks.
That's a tough bouncing ball to follow as it seems the resolution was to upgrade to a newer version of a dependency, but if we look at that dependency, the fix seems to be found somewhere in this https://github.com/microsoft/LightGBM/compare/v2.2.1...v2.2....
But, although there is admittedly a lot in there and I may have missed it, I don't see any updates to tests to denote that a problem was discovered. Which, while not knowing much about the project, makes me think that there really isn't any meaningful testing going on, which is interesting for what it is, but not in the vein of the discussion here.
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JetBrains
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catboost
A fast, scalable, high performance Gradient Boosting on Decision Trees library, used for ranking, classification, regression and other machine learning tasks for Python, R, Java, C++. Supports computation on CPU and GPU.
Project mention: 🚀 Why Your ML Service Needs Rust + CatBoost: A Setup Guide That Actually Works | dev.to | 2025-01-19[package] name = "MLApp" version = "0.1.0" edition = "2021" [dependencies] catboost = { git = "https://github.com/catboost/catboost", rev = "0bfdc35"}
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terra
R package for spatial data handling https://rspatial.github.io/terra/reference/terra-package.html (by rspatial)
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Sevalla
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rgl
rgl is a 3D visualization system based on OpenGL. It provides a medium to high level interface for use in R, currently modelled on classic R graphics, with extensions to allow for interaction. (by dmurdoch)
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ R discussion
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A note from our sponsor - JetBrains
surveys.jetbrains.com | 1 Sep 2025
Index
What are some of the best open-source R projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | LightGBM | 17,539 |
| 2 | catboost | 8,545 |
| 3 | Rcpp | 773 |
| 4 | readxl | 742 |
| 5 | vroom | 631 |
| 6 | GPBoost | 628 |
| 7 | terra | 578 |
| 8 | pdftools | 537 |
| 9 | odbc | 402 |
| 10 | dggridR | 179 |
| 11 | Rblpapi | 172 |
| 12 | rinside | 142 |
| 13 | cppRouting | 116 |
| 14 | BTM | 97 |
| 15 | rgl | 95 |
| 16 | redist | 71 |
| 17 | re2 | 30 |
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