Foswiki is wiki software, supporting the editing of Web pages in an ordinary Web browser by end users. What makes Foswiki special is that it supports the embedding of active and passive macros that enhance the page content (e.g. with global or dynamic information) and allow end-users to build applications that store and process data in a structured manner.
Dwoo is a template engine for PHP5 where you write less and do more. It is mostly compatible with Smarty templates, but it's a full rewrite that builds upon Smarty's syntax to offer more flexibility, both in templates and in PHP extensibility. It also comes with a few adapters for the major PHP development frameworks.
pyratemp is probably (one of) the smallest complete template-engines for Python (with about 500 LOC). It has a very small set of special syntax in the templates. This reduces complexity and the probability of bugs and lead to an easy-to-use and intuitive user-interface. It uses embedded Python-expressions (in a "sandbox"), is well documented, has full Unicode-support, and produces very good error-messages, which is very useful when creating new templates.
Zimplit CMS is a Web-based content management system which enables users to create professional Web sites without being a Web developer or hiring one. Editing a Web site is extremely easy thanks to an "On-site" editor. The editor is on the Web site like an ordinary visitor, except that on every editable page, a small toolbar makes it possible to create pages, change texts, and add pictures, galleries, and videos. Users can use any CSS/HTML template they wish.
TM++ is an embedded, portable, persistent Topic Maps engine. It is designed to work according to the ISO standards for TMDM 1.0 and XTM 1.0/2.0 on Windows and most POSIX-compliant operating systems like Unix and Linux. It has interfaces for C++, ALLEGROCL, CHICKEN, CLISP, CFFI, C#, Guile, Java, Lua, Modula 3, Mzscheme, Ocaml, Octave, Perl, PHP4, PHP5, Pike, Python, R (aka GNU S), Ruby, Lisp S-Expressions, Tcl, Common Lisp/UFFI, and XML.
With MetaModel, you use a type-safe SQL-like API for querying any datastore. It is a data access framework providing a common interface for exploration and querying of different types of datastores. It isn't a data mapping framework. Instead, it emphasizes abstraction of metadata and the ability to add data sources at runtime, making MetaModel great for generic data processing applications, but less so for applications modeled around a particular domain.
LinkIt is a simple program to validate local links within HTML documents. It tries to check that every referenced local file (another HTML document, an image, or a CSS entry) exists and is accessible. The checking is performed recursively, and all reachable documents are checked. When the referenced local file doesn't exist, the program reports the filename, row, and column where the broken reference is located.