I'm a long time open source developer. The last few years i have been working on my Maplat Webserver, https://sourceforge.net/p/maplat/code/ci/default/tree/.

Currently, i have a free online wallet https://www.cavac.at.(*) The only charge is the mandatory network transaction fee of 0.0005 BTC to support the miners.

I'm currently working on a newer version of this (mostly background stuff).

Also, in a few days, maybe a week or two, you will be able to rent subdomain-entries for one of my domains, grumpfzotz.org, very cheaply with bitcoins. I was thinking of 0.005 BTC per hostname per year. I'm still working out the technical details. Maybe this will only include that single hostname (like myserver.grumpfzotz.org), most likely this will include a fully working sub domain (including sub-sub names like myserver.mysubdomain.grumpfzotz.org). Depends on how easy to use i can make the webinterface for users.

LG,
Rene

(*)  You might need to visit https://www.cacert.org/, tough, to install the root certificate into your browser. I just refuse to pay thousands of dollars for a commercial SSL certificate (which is about 3-7 seconds of automated computing time on the "certificate authority" webserver).