Kirk here. I used to maintain a page of Kumamoto-related links called, well, “Kumamoto Links”:
http://www2.kumagaku.ac.jp/teacher/%7Emasden/links.html
Now, the page is extremely outdated (lots of “link rot,” etc.) but I think that the “Language Tools” section toward the top is still useful. Recently, fellow Kumamoto International editor Tristan Vick introduced me to jisho.org. It combines some of the functionaly of Rikai (nearly instant lookup of words) and Hiragana Megane (automatic addition of furigana) in a way that works well on a smartphone. The video shows, as an example, how I used it to help read a few lines of the Wikipedia page on “熊本”. I think this may be useful in language learning but also as a way of making sense of Japanese text that one needs to read (disaster notifications, emails, etc.) but finds difficult.
Another tool I should mention is the Google translate extension in the Chrome browser on a computer.
If those of you who are reading this could share what you know about other useful tools I’d really appreciate it.
Finally, thanks again to Tristan for the tip!!