主要特點
Orca瀏覽器是一個高速、用戶友好的網頁瀏覽器，旨在為最新的firefox增加更多的功能。Orca瀏覽器不僅具有如安全、低記憶體占用、拼寫檢查、內置下載管理器等來自firefox的功能，還提高了網頁瀏覽速度，增加了很多新特性，比如廣告過濾器、flash過濾器、線上檔案存儲、自動表格填充、Outlook風格的RSS閱讀器等。自動表格填充記憶、填充不同類型的網頁表格、密碼，並以密碼的形式對其加以保護。線上檔案存儲允許用戶創建擁有用戶名和密碼的賬戶，可以在任意一台計算機上訪問、保存他們的個人數據，例如書籤、自動填充、RSS種子等。特點:
線上檔案存儲：
Orca瀏覽器能把用戶的書籤，RSS 種子，配置檔案 或網頁密碼等，保存在orca的線上存儲里。這樣，這樣用戶可以再任何地方訪問他們的個人數據，如辦公室，家裡或有網路的咖啡屋，並且當重灌系統的時候不用擔心個人數據丟失。
自動填充：
幫助用戶記憶網頁密碼, 並實現一鍵填充。
擴展：
支持火狐擴展，增強瀏覽器的用戶體驗。你希望在瀏覽器中添加或增強的很多擴展都可以用於 Orca瀏覽器。與Orca兼容的擴展列表可以在Avant Browser論壇里找到，請點擊 這裡。
彈窗/廣告過濾器：
輕鬆過濾沒用的橫幅廣告，動畫廣告和自動彈出的頁面。
滑鼠手勢：
使用戶通過滑鼠手勢進行各種常用的瀏覽操作。
安全恢復：
如果Orca瀏覽器非正常關閉，所有打開的頁面將會保存並在下次啟動瀏覽器時自動重新打開。
RSS 閱讀器：
用戶瀏覽RSS/ATOM種子就像瀏覽網頁一樣。用戶可以將他們喜歡的RSS保存為書籤。
隱私保護：
通過清除所有的瀏覽痕跡來保護用戶的隱私：鍵入網址，自動完成，Cookies，歷史，臨時資料夾等。
最新版本
Orca Browser 1.2 build 6，2009年12月21日發布修正了從剪貼簿無法正確打開頁面的問題
修改了一些語言包
修正了編寫Yahoo郵件時導致瀏覽器無回響的問題
修正了無論Orca Browser選項中對應選項是否選中，用滑鼠中鍵始終在新視窗以及後景中打開頁面的問題
修正了Roboform工具列把地址欄下拉選單截斷的問題
正了Roboform工具列把地址欄下拉選單截斷的問題
Gecko核心升級到1.9.1.6
Orca Browser 1.2 build 5，2009年8月14日發布
修復了當一次關閉所有視窗時地址欄和搜尋欄無法選中的問題
Orca Browser 1.2 build 3，2009年8月13日發布
瀏覽器核心升級到Gecko 1.9.1.2
修正了browser:home頁面中多個HTML注入漏洞
修正了誤檢測了某書籤地址可用性的問題
修正了在切換到其他應用程式後地址欄下拉選單不消失的問題
修正了禁用自動刷新所有視窗無效的問題
修正了“搜尋當前站點”是用AvantFind而非某認搜尋引擎搜尋的問題
修正了這個網站“songtaste”上音樂無法播放的問題
修正了某網站視頻播放器無法最大化的問題
Orca Browser 1.2 build 2，2009年7月23日發布
Gecko核心升級到1.9.1.1
Shiretoko更名為Orca
修正了Add Exception按鈕
修正了Adblock Plus 擴展無法使用的問題
修正了刷新頁面後滾動條無法保持原位的問題
Orca Browser 1.1 build 7, Released 10 Jun 2009
Fixed the issue that sometime there is a gray bar Show Up at the bottom of the browser
Fixed the dead pages issue
Orca Browser 1.1 build 6, Released 2 Jun 2009
Force using CTRL + N to open new created pages in foreground
Removed the CTRL + DEL shortcut
Orca Browser 1.1 build 5, Released 26 May 2009
New U-Disk version
Added Browser:Home
Add another shortcut of hiding browser with CTRL+DEL
Updated to the Core of Firefox 3.0.10
Fixed the unzooming issue with arrow keys
Fixed the problem which keeps opening pages in background while using CTRL+ENTER
Made Orca Browser application shortcuts available to all Windows users
Some minor fixes
Orca Browser 1.1 build 3, Released 22 April 2009
Fixed miscoded RSS titles
Fixed the bug of reopening double last closed page
Try to fix non-working shortcuts/buttons problem during page loading
Fixed a shortcut bug which tends to bring up context menu
Fixed the search words hightlighting issue
Fixed the bug that the percentage displayed kept unchanged after zooming
Fixed the bug that saved html page was compressed
Fixed non-working zoom function caused by decimal separator - comma
Added description to Orca Browser application in Vista's task manager
Updated Firefox Render Engine to 3.0.8
Some minor fixes
Orca Browser 1.1 build 2, Released 9 March 2009
Speed up Floating toolbar response time
Fixed the bug with F7 key
Improved Application Icon Resolution
Fixed sometime Thumbnail Preivew turns gray under vista
Fixed a few translation related issues.
Updated Firefox Render Engine to 3.0.7
Added "Create New Bookmark in this folder" to bookmark sidebar
Orca Browser 1.1 build 1, Released 25 February 2009
Fixed the problem that Right Click Menus on title bar can't be opened through ALT+Space
Fixed the problem that the username and password Input Box can't be selected by cursor when logging in Online Storage
Fixed the browser troubles caused by minimizing it to System Tray
Fixed the flashing problem caused by opening a link with middle mouse button
Orca Browser 1.1 RC 4, Released 20 February 2009
Fixed the thumbnails preview issue with vista
Fixed the bug that Orca would exit with fatal memory error
Fixed the focus problem when creating new tabs with double click
Added more languages for webpage translation
Added option to use firefox's password manager
Orca Browser 1.1 RC 3, Released 21 January 2009
Fixed the AutoFill sometimes not working bug
Fixed the web page not displaying bug under Polish and Japanese interface
Fixed the bug unabling to save configurations
Fixed the tab switching bug
Orca Browser 1.1 RC 2, Released 05 January 2009
Fixed the DDE bug that kept opening htm/html files in Avant Browser
Fixed the unresponsive tab switching bug
Fixed the bug stopping Orca Browser from tiling properly along with other application windows
Removed the feature to Start Up another application through pressing commands to start->run box
Fixed unworking navigation buttons bug in Flash
Fixed the bug where downloading files stopped if Orca Browser was closed
Fixed the bug stopping Orca Browser from reloading saved pages when restarting it after installing new firefox addons
Fixed some translation issues
Fixed the bug where the URL drop down list screened up the address bar when the tab bar was set to the bottom
Fixed the bug that kept Orca Browser from signing in some websites
Fixed the bug that kept the side bar blank when history panel was set default
Fixed the miscoded keyword bug if searching a selected text through dragging and dropping
Fixed the miscoded hint bug if hovering the mouse over a bookmark item in Side Bar
Fixed the unabling to organize bookmarks bug when setting Orca Browser to use IE favorites
Fixed the F6 & (ALT + D) not working bug when the focus was already at Address Bar
Fixed the bug stopping Orca Browser from callling the default search engine through searching keywords from Address Bar
Fixed the bug stopping the Address Bar drop down list from matching the inputting keywords
Fixed the unsupporting Chinese username issue in AutoFill
Orca Browser 1.1 RC 1, Released 07 November 2008
Fixed the bug keeping you from Opening a Link in the foreground with middle mouse button
Fixed the bug keeping the address bar favicon from displaying for Google search
Fixed the bug which kept the tab title and window title from updating after you navigated to the home page
Fixed the bug keeping the Enter key from responding to Open a Link window
Fixed the bug keeping some buttons from displaying in Floating Text Toolbar
Fixed the bug where the color of the Nexos skin became darker after you restarted the browser
Fixed the bug where the address bar dropdown list screened the interface of some programs
Fxied the bug which kept Orca window from closing with Alt+F4
Added language packs
Orca Browser 1.1 Beta 3, Released 26 September 2008
Changed the install folder name from Orca to Orca Browser
Removed View>Text Size option
Removed the Url showed above the Autofill item while the cursor was hovering over it
Fixed the bug where the browser window wouldn't restore if Download Manager was restored first
Fixed the bug where My Information sometimes kept you from filling in data to the text field in the page
Fixed the bug which caused Orca sometimes to interfere with the default browser under some conditions
Fixed the bug caused the RSS feeds to show wrong urls
Fixed the bug that kept you from opening up the menus through shortcuts
Fixed the bug where the drop down menu next to the Address Bar was disabled
Orca Browser 1.1 Beta 2, Released 19 September 2008
Removed the yellow background in the Address Bar drop download list while you're inputting urls
Added the search function to the Address Bar drop down list
Added the feature rearranging the items in Tab Context Menu according to the Tabs Bar position
Fixed the blank Bookmarks Bar issue under IE8
Fixed the bug that sometimes caused the system to Beep while you're pressing Enter in Address Bar
Orca Browser 1.1 Beta 1, Released 03 September 2008
Fix poor quality Taskbar icon.(#103)
Fix language string containing "Avant Browser" instead of "Orca Browser". (#104)
Fix not being able to set a default zoom level. (#99)
Various other bug fixes.
Orca Browser 1.1 Alpha 4, Released 28 August 2008
Added support for Firefox extensions
Added the ability to save a downloaded file to the desired folder
Fixed the Autofill password security issue
Perfected icon resolution in the switching programs interface (#79)
Fixed the bug where the Zoom In function didn't act accurately (#73)
Fixed the bug that caused the Auto-Complete function not to work (#78)
Fixed the bug that caused JavaScript Add-ons not to work correctly (#75)
Fixed the bug that made the Download Manager open a new window for each download (#67)
Fixed the bug where Proxy settings didn't get saved if a modification was made under Tools>Proxy (#65)
Fixed the bug that made creating a new current page opened the last loaded URL; (#42)
Fixed the bug that made the Orca installer close a working instance of Avant (#32)
Orca Browser 1.1 Alpha 3, Released 15 July 2008
Various bug fixes.
Orca Browser 1.1 Alpha 2a, Released 7 July 2008
Incorrect browser name in the Default Programs list of Vista (Partially fixed).
Autofill feature sometimes leads to entering URLs very slowly.
The Popup Blocker exception list couldn't be edited.
The progress bar can't complete itself after the page has been completely loaded.
Orca Browser 1.1 Alpha 2, Released 4 July 2008
Picture weren't displayed in the RSS Reader.
Sometimes a page couldn't be opened the first time starting the browser.
Various other minor bugs.
Orca Browser 1.1 Alpha 1, Released 2 July 2008
Complete rewrite of Orca Browser.
Popup Blocker Modified.
Added some Google search strings in Standard Search box.
Orca Browser 1.0 Release Candidate 3, Released 15 December 2005
•Various bug fixes.
Orca Browser 1.0 Release Candidate 2, Released 6 December 2005
•Improved RSS Reader.
•Improved Download Manager.
•Improved View Source.
•Fixed some bugs reported before.
Orca Browser 1.0 Release Candidate 1, Released 28 November 2005
•Improved focus handling.
•Improved Mouse Gesture handling.
•Fixed a bug of address box.
•Improved Windows Position Handler.
•Improved Mouse Cursor.
•Fixed a bug of Slovak Language pack.
Orca Browser 1.0 Beta 3, Released 22 November 2005
•Built on Firefox 1.5 RC3.
•New Web Prompt Windows.
•Improved Flash Bar.
•Open All Links In a page.
•Improved Auto Scroll.
•Improved Memory Usage.
•Improved Web Editor Box.
•Improved bridge for Firefox and orca.
•Lots of internal tweaks.
Orca Browser 1.0 Beta 2, Released 25 October 2005
•Updated to Firefox 1.5 Beta 2
•Cookie Manager: Tools->View Cookies
•Improved Stabilities, fixed a few bugs may cause crash.
•Improved Speed, lower CPU usage.
•Improved Memory Usage, Fixed a few bugs may cause memory leak.
•Fixed some bugs reported in Beta 1.
Orca Browser 1.0 Beta 1, Released 7 October 2005
•Built on Firefox 1.5 (Alpha versions are built on Firefox 1.0).
•Added Web Form Auto-Filler.
•Plug-ins Installer (for Flash/Quick Time/Java,etc).
•Improved Right-Click Menu
•Fixed focus bugs.
•Lots of internal fix/improvement to improve performance.
Orca Browser 1.0 Alpha 2, Released 12 September 2005
•Fixed some various bugs.
Orca Browser 1.0 Alpha 1, Released 12 September 2005
•First version.
