Wondershare PDFelement - All-in-one PDF editor
Guitarix - Guitarix is a simple Linux Rock Guitar Amplifier for https://alternativeto.
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Ampire - State Space Modeled guitar amp/cab/stompbox simulator.
Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.
TH-U - World class guitar amps and effects for PC and Mac