LabDiary is a program for managing laboratory experiments in a sophisticated way. It is very easy to use - you can link experiments logically with each other, associate files to an experiment and structure all your data.
JarHunt is a simple Ruby/Rails app that allows you to upload and catalog jar files that you work with every day. The jar files are then searchable, making tracking down which class files belong to which java archive easy and fast.
DataVision is a reporting tool similar to Crystal Reports. DV supports many data sources (JDBC, files) and many output formats (HTML, XML, PDF, LaTeX, Excel, delimited files, DocBook). DV includes a GUI editor. DV is embeddable. Reports are XML-based.
THIS PROJECT HAS MOVED. DO NOT ADD BUGS OR FEATURE REQUESTS HERE; THEY MAY BE IGNORED. Please go to the new project page at http://rubyforge.org/projects/ruby-dbi.