I've use it instead of Firebase on a 15$ DigitalOcean droplet and saved around ~$150 a month. Managing my own infra does take some extra time, but definitely worth it. The APIs and SDK are also surprisingly much easier to consume than Firebase. Waiting for the cloud version.
Based on our record, AppWrite seems to be a lot more popular than Duo mobile. While we know about 168 links to AppWrite, we've tracked only 1 mention of Duo mobile. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Call me lazy but..for phone 2FA auth I'm using Duo in personal mode (TOTP). See guide.duo.com for a start. It's convenient and fast. My Yubikey is used for PC web 2FA and, no, I don't do any financials on mobile devices. Reason I picked Duo is Google Auth on Android had dings for not being secure (some say). BEWARE of Duo, if you try to buy they only sell in packs of 30 so that first bill could be... Source: about 3 years ago
Appwrite - for authenticating users, as well as saving and retrieving product details. - Source: dev.to / 13 days ago
If you haven't tried Appwrite, make sure you give it a spin. It's a open source backend that packs authentication, databases, storage, serverless functions, and all kinds of utilities in a neat API. Appwrite can be self-hosted, or you can use Appwrite Cloud starting with a generous free plan. - Source: dev.to / 2 months ago
What is Appwrite? Appwrite is an open-source backend server that abstracts the complexity of backend development, allowing developers to focus on building their applications. It provides a wide range of services including databases, storage, functions, and authentication, all designed to work seamlessly together. This integration simplifies the development process, reducing the need for extensive configuration... - Source: dev.to / 2 months ago
Appwrite is an open source BaaS platform that provides services like serverless functions, serverless databases, user authentication, and messaging. Since its release, it has quickly become a popular choice for building websites and applications. - Source: dev.to / 2 months ago
Appwrite for user management, databases, and serverless functions. - Source: dev.to / 4 months ago
Aegis Authenticator - Aegis Authenticator is a free, secure and open source app to manage your 2-step verification tokens...
Supabase - An open source Firebase alternative
andOTP - andOTP is a two-factor authentication App for Android 4.4+
Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.
OTP Auth - The app for calculating one-time-passwords on iPhone and iPad.
Next.js - A small framework for server-rendered universal JavaScript apps