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dlvhex is a prototype solver for HEX-programs which integrate Answer-Set Programs with higher-order reasoning and external computation sources. It comes with a full-fledged plug-in framework for rapid extension development.
Restad is an indexing-querying tool for tagged documents. It uses a relational database for storage and querying.
See the last news on the blog :
https://sourceforge.net/p/restad/blog/
The Ruby first prototype can be found there :
https://github.com/ymoreau/Restad
MighTyD is a prototype for demo puposes & the first implementation of the temporal database model devised by Nikos Lorentzos, Hugh Darwen & CJ Date. It uses Tutorial D as its language & PostgreSQL for storage & is compliant with the The Third Manifesto.
Innovative prototype of network applications such as TCP fuzzers that can be used for many purposes such as network and application security assessments and more. Adapt it freely to fit your needs or to simply understand how TCP works in .NET.
Tired of raising a prototype and then hearing that its going to be productive? Tired of huge meetings only to discuss "where to put this button"? Try Nova! No GUI framework to quarrel with, no persistence layer to debug - JUST-WRITE-THAT-MODEL. Period.
The IPSI XQuery Demonstrator (IPSI-XQ) is a prototype of an XQuery engine. It implementes as faithfully as possible along the current W3C working drafts.
Lazy is a language and a system to publish databases on the Web and to prototype full Web applications. It is based on the declarative specification of hypertext views
No imperative programming is required to create a database-backed web site.
PfP LMS powered by Ilias (<a href="http://pfp.ethz.ch">http://pfp.ethz.ch</a>) has replaced PfP LMS (Prototype 2). The new PfP LMS's own internal collaboration tool was adopted replacing Sourceforge for PfP LMS collaboration. Refer to www.ilias.de.
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Experimental DataBase system (ExDB) is a prototype of a native XML database system being designed and developed by students of Dept. of Computer Science at CTU FEE in Prague, Czech Republic.