What would you like on Statup?
Categories or separator of some kind.
Describe the solution you'd like
Feature added to render view by groups.
After I complete the Message/Announcement features I'll work on categories for services.
Custom service metadata I proposed on Maintenance issue could fit this issue too.
I suspect that you intended this tool to be used for single service implemented via several subservices. So if you had multiple of those, I guess the original idea was to deploy new statup instance for each of them. I beleive that @demogorgonz's use case is different - keeping one instance of the staup with group for stuff like DBs for different projects, web servers, critical infastructure elements and so on. But all on one place. Hence the need for categories, because single long list of services is not very user friendly.
It really does simplify things a lot in such use case, but fixed category attribute has number of problems. Categories will certainly be monitored by multiple people. Some of those may want different organization, maybe by type of sub-service, maybe by criticity or something else entirely like customer. That is, category is special case of _groupping by custom metadata attribute_ in which case different users may want to set up different groupings as they may not be interested in everything.
I propose here grouping by arbitrary metadata attribute and making an option to get direct link to category page (form of filtering) so that people that are interested in specific context can ignore other parts of the infrastructure.
Implementing filtering by metadata via URL query string maybe actually the simplest solution and externally controlable in ad-hoc manner. For example https://demo.statup.io/filter?q=type:mysql would show only services marked with type: mysql where type is user metadata.
Alrighty, in version 0.80.35 the follow features are complete. Download the Latest Release.

Most helpful comment
After I complete the Message/Announcement features I'll work on categories for services.