TeXnicle is described as 'is LaTeX editor designed for Mac OS X. It runs on Snow Leopard and Lion on 32-bit and 64-bit systems. TeXnicle is free (as in beer) and will remain so' and is an app in the Development category. There are seven alternatives to TeXnicle for a variety of platforms, including Linux, Windows, Mac, the Web and Android. The best alternative is TeX Live, which is both free and Open Source. Other great apps like TeXnicle are MiKTeX (Free, Open Source), Latexila (Free, Open Source), VerbTeX LaTeX Editor (Freemium) and Bakoma Tex (Paid).