Organizr is described as 'Do you have quite a bit of services running on your computer or server? Do you have a lot of bookmarks or have to memorize a bunch of ip's and ports? Well, Organizr is here to help with that'. There are five alternatives to Organizr for Self-Hosted solutions, Online / Web-based, Linux and Raspberry Pi. The best alternative is Combobox, which is free. Other great apps like Organizr are Heimdall Application Dashboard (Free, Open Source), Homer Dashboard (Free, Open Source), Dashy (Free, Open Source) and Flame (Free, Open Source).
Flame is self-hosted startpage for your server. Its design is inspired (heavily) by SUI. Flame is very easy to setup and use. With built-in editors, it allows you to setup your very own application hub in no time - no file editing necessary.