Trope is a text editor, written in the yab programming language for the Haiku Operating System. Nothing special about it, you've used text editors before. It does have a few features other Haiku text editors presently don't have, though.
1. easy access to High-Ascii and Unicode accented characters from the menus
2. Graphical Toolbar
3. Snippets
4. Word and page count
How big a file can Trope take? Well, I test it on Tostoy's War and Peace - over 3 megabytes of text. Trope takes a very long time to load this monster, but it doesn't crash under the load, and once it's in, it will happily open up new windows with lesser documents.. So if you plan to write something longer than War and Peace, you probably need a different tool :-)
License: MIT.