The 'workers' would also be able to do all that but also (depending on roles and privileges) be able to see their schedule/plans, create events and groups, post articles and services, and view tithing information. So church members could use it to stream the service or chat with different church groups, see upcoming events, volunteer, tithe/donate. The other category is like the all in one: social, managerial, and financial software (basically like a program called Choyr which actually almost does everything and is supposedly free aside from payment processor fees). So this is like ProPresenter for example. I kind of have two separate software categories I suppose.

I don't have a specific need for it, however I've have had the desire to create a all in one church app for sometime now and so seeing and hearing from people to see what they use and recomend is really helpful. My apologies, I should have been more specific. And being in IT, I dealt with this a lot. I used to be a Christian and sat on a church board as well as a non-profit board. If you don't want to maintain donations for tax purposes, there are services that cater to just that, which might be more cost effective. Tithing can be done via direct deposit or checks. OP, depending on just how small your church is, if it's less than 100, I'd just do mailing lists and forums. For a small church to hire an IT team to maintain it is likely cost-prohibitive and why such platforms exist. The number of people who have the technical skills to build such a platform let alone install and maintain the platform are probably rather small. However, my guess is that the reason why there are no OSS solutions for churches specifically is because the use case is too narrow.

If you take away the religious aspects of it, OP is essentially looking for CMS software. 'The City' is one, though I can't seem to find a link to the website so I don't know if they are still a thing.

Propresenter bible