`  :Rhino, apparently, is  a by-product of Netscape's abandoned ``Javagator`` project that also produced Grendel; both are related to Mozilla in that they have been continued as open source projects under the auspices of mozilla.org, but it looks to me like Mozilla itself uses the C-based SpiderMonkey for its JS engine.  :I certainly think Thunderbird is misplaced here; in fact, I think the ``sub-projects`` and ``spin-off browsers`` sections need reorganisation, and possibly merging - certainly they should be next to each other, rather than with other sections in between. Perhaps ``Mozilla technology`` could mention the structure of the suite itself, and then a ``Related projects`` section could deal with: #Development tools: bugzilla, tinderbox, bonsai, etc #Gecko-based browsers: whether they be gecko-GUI'd or just gecko-rendered #Projects based on Mozilla code: thunderbird, sunbird, XMLTerm, et al #Other projects hosted by mozilla.org: rhino, grendel, ElectricalFire, Mstone (although it's hard to tell where on the scale from 'active' to 'abandoned' these projects are)  :What think ye? -  `