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Nuxt.js
Discontinued Nuxt is an intuitive and extendable way to create type-safe, performant and production-grade full-stack web apps and websites with Vue 3. [Moved to: https://github.com/nuxt/nuxt]
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WordPress
WordPress, Git-ified. This repository is just a mirror of the WordPress subversion repository. Please do not send pull requests. Submit pull requests to https://github.com/WordPress/wordpress-develop and patches to https://core.trac.wordpress.org/ instead.
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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.
For your own website Creation you could look into static site generators like nuxt or Hugo and host on github pages.
You were using the wrong WordPress as stated by others. You were using wordpress.com while you should have been getting an open source copy of wordpress from WordPress.org. that allows you to do anything you want with it. The reason I went to it was mostly employability considering it has such a huge market share. You'll always be able to find work in WordPress.