RPI4/400 is perfectly capable as a little home server. All it needs is a good SD card.

Owntracks,photoprism,monocker,brave go m-sync,libre photos,wallabag,radicals e,Baikal,Firefox sync,Joplin web,webdav server,jellyfin,vaultwarden,wireguard

Vaultwarden behind mutual tls and reverse proxy and https://github.com/oguzhane/bitwarden-mobile until https://github.com/bitwarden/mobile/pull/2629 is merged

But honestly all services you mentioned are worthy.

Anything that fits your needs imao

Notes:Joplin (over webdav)

File manager:material files

Cloud:webdav provider (webdav mount in material files)

Contacts/calendar:davx5-etar

Sms/call log backup:smsIO

Cast:Bubbleupnp (non Foss)

Browser:mull/brave

Password manager:Bitwarden

Office:proprietary

Themes:Substratum

Maps:here (non Foss)

Gsm location provider:MozillaNLP/MicroG

Speetch to text:localstt

Text to speech:Flite/espeak/rhvoice

Keyboard:Anysoftkeyboard

Network scanner:Ning

Find my device:Nulides Findmydevice

Call recorder:BCR(magisk module)

Weather:Geometric Weather

Parental control:Time limit

RSS:read you

App store:obtainium

Bookmarks:wallabag

2fa:aegis

Location history:traccar/owntracks

Email:tutanota

Image2text:OCR

Translate:deepl

Photos:uhuruphotos/photoprism android gallery/Aves/image toolbox

Appops:app manager

Addblocker:addaway

Files encryption:droidfs

Downloader:download navi

Filesync:folder sync(non Foss/paid but best)

Logs:logcat reader

Launcher:nova(non Foss/paid but best)

Doc scan:open scan

Kernel manager:smart pack

VPN/tunnels:wireguard

Nextcloud is an overkill. Its just too much. I'd say better split down the needed services. Baikal/radicale etc for contacts/calendar. Photoprism/librephotos etc for photos. A webdav server for storage. And so on.

Icard is actuality the only alternative that can register as a contactless nfc payment that not relying on google/Apple wallet and its perfectly safe. It's an actual bank in Bulgaria and is eu regulated and PCI certified

https://icard.com/en/security

Not Foss. Kinda of a privacy nightmare as you need to verify your identity and location with actual documents but as already said its not google and is a solid option if you are degoogled.

I use https://github.com/dgraziotin/docker-nginx-webdav-nononsense

There are many dockerised fileservers

Aurora store with a google account for playsrtore apps. Fdroid is also installed and I do regullar visits on their website and also on izzyondroid site for new apps. I've tried syncthing but sync got corrupted and lost files while trying to figure out what went wrong (maybe a missconfiguration from my side I'm not sure).I never used it again

"But, thinking about it now, I doubt it will actually affect the feature"

It will not

We don't need to import a custom CA authority here just to insatll a client cert

OMV is quite limiting and maybe a little heavy for the pi(?)

Docker is straightforward Idk what to say You install docker and docker compose on host and run some compose.yml's to spin up your services

Their release scheme is questianable yes as you said alpha and beta released in play store only then comes the fdroid release As long as there is an fdroid release I cant blame them really but you got a fait point

Feature wise they developed their own open autofill and swipe libs plus I love the layouts. Actually builded my own layout but I like the over logic with bottom / top rows, gesture navigations etc

https://github.com/deku-messaging/Deku-SMS-Android

Supports emoji & images Supports e2ee if the other party also have deny SMS installed Supports message forwording

Mtls requires that the android client device has a certificate installed that matches the one installed on the server in order to access it.

Thanks for the info. Will look in to that approach too.

Yeah I've tried that with my webdav mount coz its the obvious thing to do.

Problem is local notes are exposed to other apps and unencrypted.

Apps like neutrinote can protect notes in their app sandbox and create a backup mirror in location of choice e.g. a webdav Mount that happens to be behind mtls.

Syncthing does not offer mtls.