PTLens is described as 'Software that correct lens pincushion or barrel distortion, chromatic aberration, vignetting, and perspective in normal and fisheye lenses' and is an app. There are more than 10 alternatives to PTLens for a variety of platforms, including Windows, Mac, Linux, iPhone and BSD apps. The best PTLens alternative is GIMP, which is both free and Open Source. Other great apps like PTLens are Glimpse Image Editor, showFoto, DxO ViewPoint and XGimp.
NeoPaint is a full featured artist's studio for Windows that's easy-to-learn, powerful and affordable! It's simple enough for beginners yet packed with powerful features and advanced tools. NeoPaint makes it easy for business and home users to touch up photographs...
RealWorld Photos is an free portable photo editor for Windows. Retouch photographs and batch process images in an easy-to-use editor. Perform lossless retouching, watermarking and other operations on .jpg images.
Saint Paint is the ideal paint package for creating and editing True Colour, 256 colour, 16 colour, and Monochrome graphics, and animating in any mode or combination of modes, with AVI editing support. It features all the essential graphic tools you'll need in everyday use...
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