There is this great website which gives a quick overview of the essential dhammas in Buddhism together with translation of pali terms and an overview explanation of the Tipitaka. I find this very useful as quick-encyclopedia.
The Dhamma list is also available for download as a PDF-file.
I tried to copy and paste the list into a text box here but its very difficult since it destroys the formatting and it takes a long time to clean it up.
Could we somehow get the list on Buddhism SE so other users can benefit from it too?