#Strokewise Kanji Finder
You can use it at allantokuda.com/strokewise.
Strokewise allows you to rapidly look up kanji you see, to determine their meanings and readings. Its focus on general stroke direction provides an alternative to the difficult classic process of looking up kanji in tables, by stroke count, or by radicals. Other tools allow you to draw the character you're looking for, and are getting better, especially on mobile. But this tool may still be helpful.
This tool is for kanji you encounter in print. It is not necessary to look up already digitized Kanji. The "Rikaichan" or "Rikaikun" browser extensions will look up kanji for you instantly when you hover your mouse over them. They go beyond this, in fact, to look up entire phrases for you.
Strokewise is released by Allan Tokuda under the MIT License.