There are 2 repositories under extract-tables topic.
MySQL Dump splitter to split / extract databases & tables from mysqldump
:scissors: Extract Tables from Microsoft Word Documents with R
This is a .net Console Application which takes the PDF path, page number and the coordinates of the part of PDF to be processed and gives the detected table on the Console
Extract relational tables from PubMed Central.
A project that collects information about formation courses form several sources (PDFs, etc) and transfers it to a spreadsheet.