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awesome-selfhosted
Discontinued A list of Free Software network services and web applications which can be hosted on your own servers [Moved to: https://github.com/awesome-selfhosted/awesome-selfhosted] (by Kickball)
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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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CyberChef
The Cyber Swiss Army Knife - a web app for encryption, encoding, compression and data analysis
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Bookstack
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Its very modern looking, easy to use even by non tech savvy, allows good organization and has 95% of features most of us need, trivial deployment, and was yet not mentioned in here.
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Syncthing for personal cloud that syncs in real time among all my machines and phone. I also set up manual sync with the press of a button using Tasker.