gochk runs staticcheck, gosimple and unused.

gosimple detects code that could be rewritten in a simpler way.

keyify transforms unkeyed struct literals into a keyed ones.

rdeps scans GOPATH for all reverse dependencies of a set of Go packages.

staticcheck detects a myriad of bugs and inefficiencies in your code.

structlayout displays the layout (field sizes and padding) of structs.

structlayout-optimize reorders struct fields to minimize the amount of padding.

structlayout-pretty formats the output of structlayout with ASCII art.

unused reports unused identifiers (types, functions, ...) in your code.