Another contender : http://www.robomongo.org/
Robo 3T (formerly Robomongo) give you a shell like interface but outputs your results in the gui.
Its available for windows, mac(dmg, zip) and linux (deb, rpm, tar.gz) as a desktop application. Currently there is a free community version (no ads, all features) and payed ones with more support and influence on backlog.
Robo 3T (formerly Robomongo) prints the results in a treeView or Json text representation and supports the generation of UUID (.NET-,Python-,Java-Encoding). It has autocomplete, shows multiple results at once and has a query history.
