QuantLib is a cross-platform, quantitative finance C++ library for modeling, pricing, trading, and risk management in real-life. It is also wrapped as Python/Ruby/Scheme modules. Extensions for Excel, R, and Mathematica are available. Other such extensions are under consideration. QuantLib offers tools that are useful both for practical implementation and for advanced modeling. It features market conventions, yield curve models, solvers, PDEs, Monte Carlo (low-discrepancy included), exotic options, VAR, and so on.
phpaga is a Web-based project, task, invoice, and quotation management system, providing a centralized way to keep on top of your day-to-day jobs and activities. Its features include printing invoices, quotations, and task lists to PDF, productivity statistics on a per project or per person basis, financial overview, billing method plugins, and multiple interface languages.
Passepartout is a GTK-based Desktop Publishing application. It features layout templates, an XML- based typesetting engine called xml2ps, user- defined text formatting with XSLT stylesheets, support for importing EPS (Encapsulated PostScript) files and almost any raster images, text running around image (or text) frames, and printing to PostScript and EPS.
Docco is a personal document retrieval tool based on Apache's Lucene indexing engine. It allows you to create an index for files on your file system which you can then search for keywords. It is not only a lot faster than searching by recursing through your file system every time, it also offers you extended query options like wildcards and fuzzy search as well as a visualization of result set intersections.