Need to post to a blog, blog comment, or other web page where you need to offer some markup language forĀ display? Annoyed to find the tags disappear? You may know the solution is HTML character entities, but don't change them manually! Here's a free web-based tool. Nothing to download: it's just a web form.
http://www.stanford.edu/~bsuter/js/convert.html
Stanford Alum Ben Suter has had this nifty tool around for a long time. You'll see he has a form where you can drop some text and tags on the left, click a button, and you'll see on the right an area rendering it for display. So >'s are changed to >'s, etc.
As a bonus, it goes the other way (converts the entities back to their corresponding tag elements), which can be useful if you find some code on a web site but discover on doing a copy/paste that it really is got those entities--and you want the tags. His reversal mechanism can be very useful in those situations. Check it out.