Note: multiple Latex files can be joined by running
in Linux: cat *.tex > ../join.tex
in Windows: type *.tex > ..\join.tex

Disclaimer

• This tool is Beerware: If this check helped improving your work, you should consider buying me a beer ;-).
• All text is deleted from the server directly after processing, no data are stored. Only statistics are mailed to me in order to improve this tool.
• Since Dec 2021 the sources are open and can be found in my GitHub repository.