PoE-Pricer is a tool for Path of Exile, that let's you quickly decide, which items you want to keep and which you want to vendor.
You can view more information on how to use this on http://poe.melanite.net.

You need Golang with a a working CGO environment installed. (See https://golang.org)
Run:
go get https://github.com/Matthias-Schwarz/PoEPricer
go build github.com/Matthias-Schwarz/PoEPricer