Check out the Issue Explorer
Looking to fund some work? You can submit a new Funded Issue here.
The rST source of the documentation contains some indexing related tags like `index::` or `:ref:`, but I don't see the resulting index [online](http://solidity.readthedocs.io/en/develop/index.html) on the left pane of the web pages. This issue keeps track of adding a link to the index on the left pane of these pages.