@billyfish
as well explained by Cymric, the basic (system dependent) TeX engines and basic support tools (for example BibTeX) that I have are those in the Amiweb2c package available on aminet.
Unfortunately, the are not (all) port of the more recent version available (as open source if I remember right), but it is not so important since these programs are very stable for a precise and IMHO excellent decision of Knuth and other people behind them. What I have recently updated are a big number of TeX macro packages, including Latex and a number of Latex packages. All these macros are system independent, which is very nice for Amiga since you can always be up to date with the most recent Latex development, if you do the effort of installing them. There is a huge number of Latex packages, and even if you limit yourself to the "required" ones, you'll spend a lot of time in doing the job (well, consider that I don't have Amigas with broad band connection, so I had to download everything with a PC and then port to Amy). As far as I remeber, by the way, amiweb2c does not come with Latex macros, so you should have done the job at least once.