Alternatives to RStudio
A free, open-source IDE for R with a data viewer, environment pane and support for Python and SQL. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
RStudio
A free, open-source IDE for R with a data viewer, environment pane and support for Python and SQL.
Replacements
Listings that take over the same core job as RStudio.
Positron
A free data science IDE for Python and R from the makers of RStudio.
Positron comes from the same makers and treats Python and R equally, but it is source-available under Elastic License 2.0 rather than open source.
Visual Studio Code
Microsoft's code editor, free to use but shipped under a Microsoft licence rather than an open one.
Visual Studio Code is a general-purpose editor that supports R and Python through extensions, without a dedicated data viewer or environment pane.
VSCodium
Visual Studio Code built from the same source without Microsoft’s branding, telemetry or licence.
VSCodium is an MIT-licensed VS Code build without telemetry where R support comes from Open VSX extensions, without RStudio's data viewer and environment pane.
Jupyter
Browser-based notebooks, JupyterLab and the classic Notebook, that combine live code, text and visualizations.
JupyterLab is a browser-based notebook environment supporting over 40 languages, with a notebook workflow rather than RStudio's editor and console layout.
GNU Emacs
An editor that is really a Lisp environment, extensible to the point where people run their email, calendar and shell inside it.
GNU Emacs is a free, fully extensible Lisp editor that can host R work through packages, with a steep learning curve and long setup.
Also worth comparing
These listings name RStudio as their own alternative, so the relationship runs both ways.
Spyder
An open-source Python IDE for scientific work with a variable explorer and an IPython console.
RStudio offers a similar data viewer and environment pane, but it is built around R with Python treated as secondary.
Similar software
Related functionality, not a direct replacement.
PyCharm
Python IDE with debugging, testing, scientific tools and web framework support.