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Tailscale - Completly free p2p mesh networking. This can help you avoid netflix account sharing issues. Set it up on multiple devices to create a wireguard mesh network.
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Civic Auth
Auth in Less Than 5 Minutes. Civic Auth comes with multiple SSO options, optional embedded wallets, and user management — all implemented with just a few lines of code. Start building today.
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Skiff- Free encrypted and open source email. Friendly team. Also has calendar, docs, and is updated all the time.
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simplex-chat
SimpleX - the first messaging network operating without user identifiers of any kind - 100% private by design! iOS, Android and desktop apps 📱!
SimpleX - Free encrypted instant messenger. Works on all platforms but PC still needs an app. Probably one of the most private there is.
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Excalidraw - Open source and free to use collaborative white board with an amazing interface.