Invoice Ninja is a popular open source application for invoicing, tracking time and accepting payments. In this tutorial, we’ll show you how to install and use Invoice Ninja on a CentOS server. But first:
Due to popular demand, here’s another tutorial on how to install your own self-hosted wiki with XWiki on a CentOS 7 server. We’ve already published a tutorial on how to install DokuWiki on Ubuntu, but if you need an alternative to DokuWiki, XWiki is a great choice.