Free Software for Self-Hosted
OpenTSDB
OpenTSDB is a free and open-source distributed, scalable Time Series Database written on top of Apache HBase. OpenTSDB was designed to address a common need: store, index and serve metrics collected from computer systems such as network gear, operating systems and applications, at a large scale, and make this data easily accessible and graphable. OpenTSDB allows you to collect thousands of metrics from tens of thousands of hosts and applications, at a high rate and will never delete or downsample data and can easily store hundreds of billions of data points.
Chef
Chef is one of the most widely-used Configuration Management tools on the market today. With Chef you can automate process and recurring tasks across multiple servers and deceives. Chef is provided as a free, open source tool along side an hosted, enterprise offering for corporation looking for enterprise features and dedicated support. Developers and DevOps across the globe trust Chef to automate task, improve security and simplify workflows.
Spider Gazelle
Spider Gazelle is a Rails esque web framework written in the programming language Crystal. The framework focuses on speed, extensabillity and ease-of-use.
Babel
Babel is the next generation free and open-source JavaScript compiler and toolchain. The Babel toolchain is mainly used to convert ECMAScript 2015+ code into a backwards compatible version of JavaScript to be compatible with older browser versions. Babel can transform syntax, polyfill features that are missing for your targeted environments, perform source code transformations and more.
Turbolinks
Turbolinks is a JavaScript library that intercepts all clicks on <a href> links to the same domain. When you click an eligible link, Turbolinks prevents the browser from following it. Instead, Turbolinks changes the browser's URL using the History API, requests the new page using XMLHttpRequest, and then renders the HTML response. Allowing you to create dynamic page loading without utilizing SPA architecture.
React Router
React Router is a fully-featured client and server-side routing library for React, a JavaScript library for building user interfaces. React Router runs anywhere React runs; on the web, on the server with node.js, and on React Native. React Router is used by companies like Apple, Airbnb, Coinbase, NetFlix, Microsoft, Discord and Zoom to further improve the experience of their react powered application used for internal and external use.
Amplication
With Amplication you can instantly generate Node.js Apps with GraphQL and REST APIs. Amplication is an open‑source development tool. It helps professional Node.js developers develop quality Node.js applications without spending time on repetitive coding tasks.
Create React App
With Create React App it's easy to setup structured React applications that is the perfect stating point for building an SPA. Under the hood, we use webpack, Babel, ESLint, and other prominent projects to power your application. All these tools allow you to focus on your code and bussiness objective, rather then build tools and configuration. The Create React App sets up a development environment with the latest JavaScript features that provides a solid developer experience, while at the same time optimizing your application for production.
Polymer
Polymer is an open-source JavaScript library for building web applications using Web Components.