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frp
A fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
I have deployed and used https://github.com/antoniomika/sish which is a very good ngrok alternative. It has the ability to manage multiple users but its simplistic. Here is a guide I wrote based on my experience of deploying it - https://trustmeiamaninja.github.io/posts/deploying-sish/
You can use frp have tried it personally: https://github.com/fatedier/frp
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Hence, a higher number means a more popular project.