This one's new to me, I found out about this on another forum. This is a completely free full fledged quality amp simulator complete with tuner, amps, cabs, IR loader and plenty of stomp style effects, including some very nice delays, choruses and reverbs, plus, for the bassists, an Ampeg bass amp model along with preset list/bank saving. I was trying it earlier this evening on the Mac and it sounds and plays very good with a layout similiar to Line 6 Helix, Overloud TH-3, Amplitube and Guitar Rig with an easy to use gui and workflow. It also has an acoustic sim and one of the settings geniunely surprised me. They have a setting for slide guitar and it makes your electric sound similar to a Resophonic or National resonator type guitar. There's also a pickup changer to make your humbuckers sound like single coils and vice versa. I don't know if this will be an issue for some but the only thing it doesn't have is tap tempo for the delays and mod pedals but it's completely free and available for both PC and Mac users. If you want to download it or read more about it here's the link: Tonelib GFX Overview – ToneLib The download is at the bottom of the page. There's also another free program on the website called Tonelib Jam which is more of a learning/practice type of software. You can read more about that one here: Tonelib JAM Overview – ToneLib You'll find the download at the bottom and it's also for PC and Mac.