You can suggest a dictionary or grammar book if you really want to, but this is also chance to think outside the box

You can suggest a dictionary or grammar book if you really want to, but this is also chance to think outside the box. Maybe there's a handy video tutorial explaining a pesky grammar problem, or an interesting podcast (yes, grammar CAN be interesting ;-) Have you ever played with dictation software? Have you ever considered proof-"listening" instead of proofreading (e.g. playing your text out loud to listen for mistakes)? What tools could you use for that? Do you know of any macros that could help translators? Is there an informative Twitter feed or a useful corpus that you'd like to recommend? Keep an open mind about what tools or resources could be valuable additions to a translator's toolbox and try to be original! Don't suggest something that we likely already know about...

Please tell us the following 5 things: 1) name of tool or resource (in the subject line); 2) link or details about where we can find it; 3) a brief description about what it is or does; 4) a brief description (about why you think it's worthy of adding to a translator's toolbox; and 5) any drawbacks or shortcomings that we should be aware of.