OSX app to paste and save HTML content? In Gmail, I can go to a web page, highlight web content, compose a Gmail message, and paste the HTML content into the email message. It works in Mail.app as well. 

But what app can I use to just paste the HTML content and then save it as an HTML file? 

Microsoft Word will accept pasted HTML content, but I don't want to save as gross weird Microsoft Word HTML markup. Is there an OSX app where I can easily paste and save copied HTML content from web pages?
Although this is an old question, it's still relevant, and here is the answer:

pbpaste -Prefer rtf | textutil -stdin -convert html -output outputfile.html


This uses the built-in OS X pbpaste utility to pipe the contents of the clipboard to stdout (-Prefer rtf is probably unnecessary but doesn't hurt), then runs it through the built-in textutil program. The -stdin argument makes textutil take its input from pbpaste; -convert html tells it to turn the input into HTML; and -output outputfile.html tells it to write the output to a file called outputfile.html.

If you find that the output has some unnecessary elements, you can exclude them with -excludedelements; for example, -excludedelements '(span, font, head, xml)'. Note that you need to have the single quotes because your shell will try to interpret the parentheses as a special shell expression.