http://dictionaryq.com/gaelg/
The dictionary features 130,000 entries, over 24,800 usage examples, and is also mobile-friendly.
The dictionary is being edited in TLex, and the data is also available for download in TLex format (which can a.o. be used with tlReader) at: http://tshwanedje.com/downloads/files/ (this is the same dictionary currently housed at http://homepages.manx.net/gaelg/).
