These programs rename and encode variables in Stata using external crosswalks. Crosswalks can be stored as Excel workbooks (.xls or .xlsx), character-delimited files (such as .csv), and Stata datasets (.dta).
Open Stata and install the programs from the SSC repository by running the commands
ssc install encodefrom
After installing the files, you can read the documentation by running help renamefrom and help encodefrom in Stata.
For a similar package in R, see Benjamin Skinner's crosswalkr:
https://cran.r-project.org/web/packages/crosswalkr/index.html