Mozilla SeaMonkey20+ years of Proud Existence in Web, Intranet, Mobile App development in IndiaAsk for QuotationUpload ResumeWeb Development Company India » Mozilla SeaMonkey Mozilla SeaMonkey 1. Once your browser is open, click the "Edit" menu and select "Preferences". 2. In the left-side list, open the "Advanced" node and select "Cache". 3 Click the "Clear Cache" button. .