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- TeX Users Group
The TUG website is the primary online source for the scientific document preparation system, TeX. The site contains news, information about TeX, and much more. There are several TeX distributions, these include MikTeX, TeX Live, and fpTeX. As far as TeX extensions go, LaTeX is probably the most ubiquitous; see the LaTeX Project site for more on this. Another useful tool is the bibliographic extension BibTeX (Riccardo Lucchetti also maintains a site that has an explicit economics/finance focus).
TeXnicCenter is a handy integrated development environment for developing LaTeX-based documents on the Windows platform (an alternative is the WinEdt Shell); see also the editing platform GNU TeXmacs. For actual front-ends, consider the open-source LyX document processor, or the commerical Scientific Word. See also Scientific Letter, a plugin for equation-rich emails based on TeX. Other support software for the LaTeX world include: JabRef, an open-source BibTeX reference manager (BibEdit is a nice, faster-running alternative); Tex Pictures, a freeware vector drawing program (WinFIG is an alternative); and TeX4PPT, a LaTeX add-in for Powerpoint (TeXPoint is an alternative).
Those still sold to nonscientific word processors can use either MathType, Equation Illustrator, or Math+Magic as an upgrade to the built-in equation editors. Conversion to TeX can then be effected using Word2TeX (or wvWare, which converts to LaTeX, among other formats), and in the other direction using TeX2Word (or TexPort).
Among packaged econometric packages, Stata is probably the one that comes closest to mainstream usage, especially in empirical international trade (although Limdep is also popular for working with cross-sectional data). Those working with more time-series international finance data might prefer Quantitative Micro’s eViews, or RATS (or Timberlake’s Ox, for which the command-line version is free for academic use). The Econometrics Journal also has a very extensive, annotated set of links to online software for economics.
Scilab, and the similarly open-source R Project (fast becoming an industry standard, although still not as popular in the discipline), are high-level mathematical mathematical and statistical programming languages, used commonly in quantitative macroeconomics. Commercial versions include Mathwork’s Matlab and Aptech System’s Gauss.
Together with Axiom, you have two open-source numeric and/or symbolic computational engines, used to solve all sorts of complex equations either numerically or algebraically. The most popular commercial realizations are Mathematica, Maple, and MuPAD. Maxima also has a GUI interface through wxMaxima.