Atlassian Confluence（簡稱Confluence）是一個專業的wiki程序。它是一個知識管理的工具，通過它可以實現團隊成員之間的協作和知識共享。

Confluence使用簡單，但它強大的編輯和站點管理特征能夠幫助團隊成員之間共享信息，文檔協作，集體討論。目前，Confluence被用于廣泛地用于項目團隊，開發團隊，市場銷售團隊。

中文演示站點 http://www.fangwai.net:8080/confluence/dashboard.action

JIRA:一個優秀的缺陷跟蹤與項目管理軟件

缺陷跟蹤，或稱為：Bug Tracking, Defect Tracking，是產品開發(尤其是軟件開發)和維護過程中重要的輔助工具，用于跟蹤記錄產品的缺陷、需求變更等，作為溝通開發人員與測試人員、客戶的溝通的橋梁，保障產品開發流程更加協調。

都是商業軟件，但很好的一點是可以允許開源項目/非贏利組織獲得免費許可。某網站上是這么說的：

非盈利機構：非贏利性的非官方/學術/商業/政治/惡搞性組織，可以嘗試申請免費使用
開源組織：正在進行開源項目開發的組織可以嘗試申請
個人試用：你可以在進行Confluence永久試用。（此版本限制wiki上最多注冊兩個用戶）

其官方網站上是這么說的：

Community & Open Source Licenses
Community
Confluence is free for use by official non-profit organisations and charities (proof of non-profit status is required). There are certain organisations whose purpose is to make the world a better place, and we believe in helping them achieve that.

Community licenses are designed for organisations which are:

non-profit,
non-government,
non-academic,
non-commercial,
non-political and
secular
in nature, that would not otherwise be able to afford Confluence. If your organisation is philanthropic in nature then you probably qualify.

Apply for a Community License online 
Open Source
Atlassian supports and believes in the Open Source movement - Confluence utilises a number of good Open Source components, and Atlassian developers are committers on a large number of Open Source projects.

To give back to the open source community (and hopefully improve the quality of those projects!), Confluence is free for any Open Source project to use.

There are a few requirements for an Open Source license, the main ones being:

Established code base
Publicly available project website
Using an approved open source license
Your Confluence instance will be publicly accessible