支援 UTF-8 編碼，大量運用 AJAX ，此論壇誕生緣起為參加 official Zend PHP5 Competition
(Zend 舉辦的一個競賽)，最後取得名次為第 22 名。
如果單以參加的論壇程式來看為第一名。
該競賽最後排名網址在 http://www.zend.com/php5/contest/top_rated.php
Zend 官網上對 k4bb 的描述是 "Forum Software, including template engine, dba, etc."

• It's free!
• Works across several popular databases: MySQL, MySQLi, SQLite and PostgreSQL
• Multilingual Support - Easily change the board's language with use use of k4BB's extensive language packs
• Unlimited Categories, Forums, Topics and Replies!
• Comprehensive and powerful administration panel
• BB Code, Emoticon (smilies) and WYSIWYG (What You See is What You Get) support!
• Easy to read and humoristic Help documents
• Advanced template engine - Separates business logic from design
• Full category/forum/group/user/faq permission system - control who can do what!
• Inline polling - Put polls anywhere in your post!
• Inline moderating system - manage your forums while browsing them!
• AJAX powered quick reply, inline moderation, quick edit, etc!
• Administration CSS editor - Manage the styles of your board down to the letter
• And more...