NanoBlogger 3.4 - Weblog engine written in Bash. (Free)

Pros:

• intuitive commandline interface
• highly configurable and script-able :)
• easy drafting, editing, and management of entries
• archiving by category, year, month, and entry
• pagination
• permanent and navigational links
• templates and CSS style sheets for full control over layout
• placeholders for easy template manipulation
• support for multiple weblogs
• support for multiple categories
• support for relative and absolute links
• support for date manipulation of entries
• Atom syndication (comes with 1.0 format)
• RSS syndication (comes with RSS 1.0 and 2.0 formats)
• plugins for calendar, recent entries, weblog status, etc.
• plugins for text formatting (e.g. line breaks translate to HTML)
• global (nb.conf) and per-weblog (blog.conf) configuration
• intelligent build system - only updates relative files
• simple cache system for improved effeciency
• independent of java-script and server-side scripting (e.g. PHP)
• independent of external database (stores data in flat-files)
• multi-language support
• multi-platform portability (just bash and the required commands)

• slow (written in bash)
• codebase is large and complex
• no comments (only available as add-on)
• not easily upgradable

• Adds support for new "shortcode" style plugins. e.g. "[youtube]..."
• Adds new commands for creating and importing articles.
• Adds support for user defined break points via the entry excerpt plugin.
• Improved language support allows displaying early error messages in desired language.
• Includes several optimizations which translates to noticeable gains in overall speed.
• Adds additional control over amount and type of archives generated.
• Improves management of flat-file databases.
• Includes numerous bug fixes.