MathMod is mathematical software for visualizing and animating parametric and implicit surfaces. It is an extension/rewrite of the K3DSurf project. It supports 3D/4D plotting and animation, a scripting language, a JSON file format with a large set of scripted examples, and an OBJ output file of the 3D mesh.
Kelvin is a units converter intended for scientists, teachers, and students who need a reliable tool for fast conversion. Some categories included are: acceleration, area, frequency, atomic physics, density, electrical capacitance, electromagnetic radiation, energy/work, flow, force, fuel consumption, illumination, length, luminance, luminous flux, magnetomotive force, mass, power, prefixes and suffixes, pressure and stress, specific heat, speed/velocity, temperature, thermal resistance, time, torque, viscosity (dynamic), viscosity (kinematic), volume, and dry/liquid capacity.
wcfg is a flexible and easy to customise script that can configure (or remove) complete LAMP-like virtual Web servers. It supports both nginx with php-fpm and apache2 with mod_php and can manage name based virtual servers, MySQL databases and privileges, FTP and SFTP users, and awstats and related static reports. It configures logrotate, and keeps everything consistent with the regulations and automatisms provided by the standard Debian packages. A new user is created for every virtual server, with the Web site root path as the home directory.
JCabi is a collection of small, useful Java components. It includes a convenient static wrapper around SLF4J, a Sonatype Aether adapter, an Amazon Elastic Beanstalk Maven plugin for seamless deployment of artifacts, a Heroku Maven plugin, a Maven Log to SLF4J binding, and a few others.