Path-Manager - Download Path-Manager for free.
Pathman - A Windows platform tool that edit PATH enviroment variable(both system wide and user wide)
Rapid environment editor - Rapid Environment Editor - freeware Windows environment variables editor
Path Editor (Open Source) - Edit PATH environment on Windows conveniently.
eveditor - Your trusty environment variables editor
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).