My rule of thumb: never trust a service whose front page has a "Pricing" tab.
Extending your rule: Never trust a service whose “Pricing” page is hidden.
Earlier today, I encountered a website[0] that does exactly this.
It can be done fairly easily. It's literally just using the API of these services. I might try to do this while I am learning how to use Tauri in Rust.
I don't know of FOSS "one-stop-shops" but these services should have APIs you can use and write scripts to mass-delete. It wouldn't be particularly hard or time-consuming, and you can also publish your scripts so other people can use them instead of writing your own.
Interesting tool ! Indeed, thats quiet shady to give ALL your accounts informations to a closed source app...
And alternativeto has no real alternative, rn, but let's hope something exists doing the same
Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
much thanks to @gary_host_laptop for the logo design :)