Created a search plugin to my favourite Mind-mapping tool, FreeMind which itself is open-source Java based.
https://sourceforge.net/projects/freemindsearchplugin/
The existing program had limited search facilities, only the current open map, so wrote plugin to allow search from multiple Freemind maps. It uses Apache Lucene to create an in-memory index then orders the results by a score. You can then click on a result to open that map. Can choose to search the maps you already have open, or to recursively search a directory of your choice.
