WordPress 是一款開放原始碼的網誌或部落格内容管理系统，也是一款專注於美學、網頁標準和易用性的個人發佈平台。它兼具自由與無價，您可以下載並免費使用。
3.9.1 版是一個維護更新，修復 3.9 裡 34 個臭蟲，諸多更新包含多網誌網路、自訂小工具和預覽佈景主題，以及全新的可視化編輯器。我們也對新的音訊/影片播放清單做了一些調整以提高效能。完整的更新項目，請參考變更列表和釋出說明。您可以下載 3.9.1 正體中文版，或者透過控制台 → 更新並點擊「馬上更新」來進行升級。
§ 作業系統：Windows 95/98/ME/NT/2000/XP/2003/Vista/7/8
WordPress 原文簡介：
WordPress is web software you can use to create a beautiful website or blog. We like to say that WordPress is both free and priceless at the same time.
The core software is built by hundreds of community volunteers, and when you’re ready for more there are thousands of plugins and themes available to transform your site into almost anything you can imagine. Over 60 million people have chosen the software to power the place on the web they call “home” — we’d love you to join the family.