An extremely old thread, but here goes.
My Radicale instance broke, tried to fix it, but realised that I never liked it much anyway. So looked at alternatives and found Baikal.
Now packaged and released as a Community App.
In your AppStore, 
Enter when prompted : https://communityapps.appx.uk/cloudron-baikal/CloudronVersions.json
Brief info at https://communityapps.appx.uk



