Any one know where I can find any of Rambam's works in the original Judeo-Arabic (preferably online and not a manuscript but an easily readable text)?
Here are the three volumes of Salomon Munk's edition of the Judeo-Arabic original of the Guide of the Perplexed (together with Munk's French translation), available free in full text on Google Books (the Arabic starts from the end of each volume):
- Guide of the Perplexed: Munk ed. 1st vol.
- Guide of the Perplexed: Munk ed. 2nd vol.
- Guide of the Perplexed: Munk ed. 3rd vol.
Here is Israel Efros's edition of the Judeo-Arabic text of the Treatise on Logic ascribed to Maimonides (together with three different Medieval translations into Hebrew), available on HebrewBooks:
Some versions of the Kapach-translation of perush hamishnayot (published by Mosad Harav Kook) have the original arabic on one side. There's also a two volume set called "Igrot HaRMBM" (its off-white in color) which has the original Arabic of all the correspondences printed before the translation.
Goto Sefarim Online.org. I downloaded the Arabic manuscript from the site and it's pretty clear from what I remember.
The Kapach (Qafih) editions are nearly impossible to find and if you do, they're prohibitively expensive.
It's not what people usually have in mind when they mention the Rambam's literature, but you can find the complete collection of his medical writings here, in the original Arabic and with English translation. Given that they are not usually thought of as "Torah", I'm not certain that it qualifies for this site, but they were authored by the Rambam and are significant by virtue of the fact.