Redmine is a web based project management and collaboration platform. It is based on the Ruby programming language and the Ruby on Rails framework. Its user friendly and easy to install and configure.
ReadRocket Chat is an excellent open source collaboration tool. It is similar to the close source commercial application Slack. Trello is a commercial Kanban board that allows managing tasks and task lists. It has an attractive interface with many features and a well documented API.
ReadRocket Chat and Wekan are useful online collaboration tools. Both tools are open source and can be downloaded and installed for free.
ReadLoad testing a website refers to the process of testing the number of concurrent users that the website is able to support. Whether or not your website attracts lots of visitors, it is useful to know how many users the website can support.
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