xQuickFR is a simple tool for search and replace operations over multiple files. You can apply ordinary "word by word" replacement, or choose to use fully featured regular expressions.
xQuickFR automatically creates backups (unless you deselect this option) and is designed to operate on files dispersed over entire directory trees.
For your comfort you may define search strings that span multiple lines by just typing multiple lines – no obscure construct like "$r?(?s:.)^" is required.
xQuickFR wants to be this application that you only need once a year – but then you badly need it.