Hello I found Unitron 2.1.5, and I'm sharing the link for Unity 4.3.x users. I don't like monodevelop, so I'll stay with this lightweight text editor. https://mega.co.nz/#!TtY1zTwb!UHvgXyKLGZJ7LTSps6OEgz8M_jtGyFoIfO6VcqA_hCw I don't know if this is legal or not, it's just to help the unity developers.
You can just download a previous version of Unity that contains Unitron. I would not recommend downloading from unknown sources. --Eric
I know, but I can't download 1.2gb for a tool of 1.7mb . I think that Unity should provide the Unitron download link on archive downloads. That will be very useful for non-Monodevelop users.