If you are looking for a completely free "forever" plugin, several high-quality VSTs offer similar classic vocoding features: TAL-Vocoder (Togu Audio Line)
If you’ve been searching for you’re likely a music producer wanting that classic, robotic, “Daft Punk” or “Kraftwerk” vocoder sound. The Orange Vocoder is legendary—but let’s clear up the confusion before you download anything. Orange Vocoder Vst Free Download Windows