Movable Type.org

Lets you store key-values in various Movable Type fields - its been compared to adding new fields into MT's entry screen.

partial data in the Keywords field:
author=Brad Choate
local=http://love-productions.com/mt/docs/plugins/keyvalues.php

code to generate:
<ul><MTKeyValues source="[MTEntryKeywords]">
<li>Author: <MTKeyValue key="author"><br />
<li>Description: <MTKeyValue key="description"><br />
<li>Link: <a href="<MTKeyValue key="link">">version <MTKeyValue key="version"></a><br />
<MTIfKeyExists key="mtforums">
<li><a href="<MTKeyValue key="mtforums">">
MTForums Thread</a><br />
</MTIfKeyExists>
<MTIfKeyExists key="local">
<li><a href="<MTKeyValue key="local">">
Local documentation</a><br />
</MTIfKeyExists>
</MTKeyValues>
<li><$MTEntryBody convert_breaks="0"$>
</ul>