The FIX message viewer is a set of Ruby scripts that parse FIX (Financial Information eXchange protocol) messages to display them in a more human-readable format. The viewer can only parse FIX messages in a file or from STDIN. It also expects a full FIX message on each line. The FIX message can be prepended with a timestamp, but this will be ignored. The output is colored to make it easier to read, and the MsgType field is highlighted. The log viewer works on the command line only, and requires that Ruby is installed.
Open Transactions is a solid, easy-to-use, financial crypto and digital cash library, including an API, server, and test client. It features anonymous numbered accounts, untraceable digital cash, triple-signed receipts, basket currencies, and signed XML contracts. It also supports cheques, invoices, payment plans, markets with trades, and other instruments. It uses OpenSSL and Lucre blinded tokens.
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.
openSteam is a generic e-commerce framework for Ruby on Rails. Its goal is to simplify the implementation of a Web shop. It features a generator to create a Web shop quickly, generators to create products and properties, a shopping cart, a checkout process, inventory entry for products or specific product configurations, and an administrative backend to overview customer and order information.
Makecheque is a tool (written in Ruby) to print bank cheques, either using bank-supplied stationey, or blank check paper (in conjuntion with a MICR font and perhaps special laser toner). It is intended to be used as part of an interactive bookkeeping system. Makecheque quickly and easily prints large batches of checks based on textual format specifications given as standard input and emits ready-for-printer Postscript on standard output.