Plugins set I use in my everyday vimming (especially when programing)

Simple switching between corresponding .h/.hpp and .c/.cpp files

Simple assertions/poor man's contracts for vim script

Pretty-print an xml file

A compiler plugin for the xmlwf xml well-formedness checker

a new version of txt2tags syntax file

Automatically switch Vim background based on ambient light.

detect keyword in bblean resource file

Compiler plugin for the cov-format-errors command in Coverity static analysis

Freebasic syntax file.  Can be used since v5.7

Turn global options into buffer- or window-local ones.

Google Closure plugin for vim

groff latin1/cp1252/utf-8 keymap conversion file

liquidfold.vim provides Vim syntax folding for Liquid templates. It supports any tags that have an associated end tag.

Library that makes vim able to safely load JSON files

Lets you browse offline html docs in a buffer

Text-help reader for Objective Caml with hypertext (kinda) and syntax h/l

vim plugin for put spaces between = [ ] { } in rb files on save

SFG - Smart Game Fomat (Go savegames)

Surrogate alphabets handling plugin