most of them are shells.. you can easily tell from the description, size and snapshot.
winsizer: helps test your page in different resolutions
xsite: web sucker.. extracts files according to extension(size not justified though @ 2mb for such a simple task.. i have a similar one which is about 300kb)
pink browser: browser or any window already follow your windows theme..so if a girl likes pink, her win theme will be pink and so will the browser..maybe meant for people who don't know how to change themes?
adriane: shareware ie shell
optool: shortcuts menu for your browsers?! you can already do that in the context menu of html files, shortcuts or contextmenus of the browsers themselves
gecko based projects that are no longer maintained/abandoned can be a security risk
anything that requires .net runtime
firefly.. based on gecko(i think) with vivid interface that should appeal to children(like chrome
). i don't know if it's updated but their site is active and has good links for children(kids workshop)
3DMLW 3d browser.. good for testing certain things and render vs bandwidth etc but not really practical for real browsing.
skysurf: (the only one i've downloaded) voice active ie shell.. can be very useful for visually impaired, however it's not complete because it acts like a beta. it's an interesting concept already adopted by opera since version 9? but just like opera it's pointless if the browser cannot read out the pages.. so it's not really helpful to the visually-impaired but more to very lazy folks or those who like hearing their voice. the project is active so even though it's a shell.. it has the potential to offer something useful in the future. the funny part; you really have to be blind to live with that interface