Weed-FS is a simple and highly scalable distributed file system. There are two objectives: to store billions of files, and to serve the files fast! Instead of supporting full POSIX file system semantics, it implements only a key-file mapping. Instead of managing all file metadata in a central master, it manages file volumes in the central master and lets volume servers manage files and the metadata. This relieves concurrency pressure from the central master and spreads file metadata into volume servers' memories, allowing faster file access with just one disk read operation. It is modelled on Facebook's Haystack design paper. Only 40 bytes of disk storage are required for each file's metadata, and disk reads are O(1).
CMDBuild (Configuration and Management Data Base) is a fully configurable Web application for managing asset lifecycles. It includes workflow, report, dashboard, attachment archiving, and georeference functions. It supports the management of hardware devices (client and server computers, peripheral devices, network and phone equipment), software (basic, environment, application), services, and documents (contracts, manuals). However it can be used as a standard asset management system (real estate, inventory, maintenance process, etc). It is also a framework suitable for applications that manage office business using workflows.
Networked Decision Making is a simple, fun platform for group decision making. There are many situations in which groups need to make decisions, and current methods such as meetings and voting are rather inefficient and difficult to scale. A major opportunity exists to use technology to complement and improve on these processes.
Nibble Forms 2 is a PHP form class which allows developers to quickly create HTML5 forms and validate submitted results. An evolution of the original Nibble Forms class, it follows some of the key principles of Nibble Forms: It's simple to instantiate, it uses simple form field calls, it's flexible, and it provides validation out of the box.
cQRCode is a class that generates QR code images in GIF, JPEG, and PNG formats. It takes a string of information to encode and can either serve the image with the current script output or save it to a file. The size of matrix points and the error correction level parameters are configurable.