Tool to perform MULTIPLE regex replacements on text It's often been the case that I've wanted to a) perform a series of regex replacements on some text in a specific order, and b) save this replacement to use for later. However, despite the purported usefulness of such a tool, I have not found a program, convenient shell script, or online utility which allows a user to do this. 

I will list a number of programs and utilities that I have tried: 


Sublime Text: this works well, but only one regex replacement can be made at a time, which is rudimentary for my purposes.
Regex101: This is an extremely invaluable tool for regex replacements, but it also doesn't support multiple substitutions. 
Perl: This is probably the best way to perform a series of replacements and save it as well for later. However, it is incredibly cumbersome to use, doesn't show a preview of the replacements that are being made, and has some really ugly syntax. 


Is there a better way to do what I'm trying to do from the command line, from a program, or from an online website?
BBEdit, LibreOffice, and similar tools allow regular expressions in their search/replace dialogues

Typically, there is a check box to allow regex or plain text.  Then you can replace one at a time or click "replace all."