Update Dec 4 2008: Mambo 5 movements
Update Sept 19 2008: Wildflower impressions and links

The latest movements in the Mambo 5 project ( Nov 25th 2008 ) -

> When are we going to get this mambo 5 thing started? What's the first step?

We are starting just now ;)

I'll get the release notes ready for Monday ...

Dec 2 2008: link for Sphider-Plus version 1.6 download mirror
Revised Nov 25 2008: new Sphider-Plus project site !

Revised Nov 1 2008: Draft of OWL2 specs.

The recent drafts of the OWL2 specification describe some important changes from OWL1. In a nutshell,

The structural specification of OWL 2 provides the foundation for the implementation of OWL 2 tools such as APIs and reasoners. ... This document also defines the functional-style syntax, which closely follows the structural specification and allows OWL 2 ontologies to be written in a compact form.

Revised Oct 20 2008: This is a new "hybrid rule engine" category for the development site, more nut-and-bolts-oriented than most rule engine discussions.

What I call "un-rule engines" are rule engines without true inferencing capabilities. How can they be called rule engines ?

Revised Oct 3 2008: it's still Plone as the premier Python CMS so far ... still looking.

Python is an admirable language in almost every way ( but don't get me going about 'self' in method calls - if Smalltalk programmers see 'self' all over the code, they add $10 to their hourly rate, usually well deserved ).

At any rate, Python is an admirable language - it's pure OO, very fast, great libraries, etc. In short, superior technology. If that is true, then why are there so few Python Open Source CMS packages available in the CMS market ?

Updated Oct 29 2008: added 68KB, now BSD

I am not sure why it took me this long to get around to CodeIgniter ... it's a worthy and mature PHP framework but I gravitated to CakePHP for some reason. Maybe it's the CodeIgniter licensing of EllisLab, Inc..

Updated Sept 19 2008: more links for Ruleby

Not a major category among the many rule engines implemented in Java and other languages, but some of the implementations are solid and interesting.

In fact, Ruby rule engines are particularly interesting because my hosting service ( Hostmonster ) provides them as installable Ruby gems. The Radiant CMS is also available as an application platform to connect the rule engine to the outside world.

Updated Oct 10 2008: added TWiki

There are several small, fast and powerful open source wikis that can be used as a full-featured CMS to for building small web sites and are fairly easy to extend and customize. Some may be capable of providing knowledge representation and management functions as well as the usual features available in traditional wikis. They may be the closest existing solution to some of the requirements for a Semantic Web ( however it gets defined ).

An interesting development - master Smalltalk developers Stéphane Ducasse, Marcus Denker, Damien Cassou, Lukas Renggli, Alexandre Bergel and Adrian Lienhard have initiated a fork of Squeak called "Pharo". If you know the cast of characters in the Squeak world, this is a huge assortment of Smalltalk talent ... huge.