Post New Requests Here / Re: Wish: NumberComparer tool to compare two list of words and export differences« on: January 29, 2019, 03:58 AM »
I'm not sure how much (if any) this helps, but you might like to review these threads (in which I bang on about Unix comm):-rjbull (January 28, 2019, 05:34 PM)
Probably not much use if he wants a GUI yes, but unix tools are great for munching text, for instance in WSL on my Win10 machine:
comm -12 <(sort -u english.txt) <(sort -u danish.txt) | wc -l
sorts a 4 MB list of random english words, sorts a 2 MB list of random danish words, finds all lines in common, and counts how many, in less than a second. I would assume PowerShell is similarly effective at this.