corrgram 
Homepage: https://kwstat.github.io/corrgram
Repository: https://github.com/kwstat/corrgram
The corrgram package provides a simple way to create correlograms from raw data or a correlation matrix.
Key features
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Stable, well-tested, widely used.
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Extensive examples show how to customize the display.
Installation
# Install the released version from CRAN:
install.packages("corrgram")
# Install the development version from GitHub:
install.packages("devtools")
devtools::install_github("kwstat/corrgram")Usage
require(corrgram)
corrgram(mtcars, order=TRUE, lower.panel=panel.shade, upper.panel=panel.pie,
text.panel=panel.txt, main="mtcars")
