Open Source Software for Self-Hosted
Hexo
A fast, simple & powerful blog framework and static site generator powered by Node.js. With Hexo, you can quicly build static websites and blogs that generates at an increaible speed. Hexo generates hundreds of files per seconds and quickly builds and push your website to deployment, with a single command. You can have your site up and running in minutes on well known hosts and platforms like GitHub Pages, Heroku, Digital Ocean and other platforms. The framework support all features of GitHub Flavored Markdown and most Octopress plugins by default. Hexo is released free and open-source under the MIT License.
HTTPie
HTTPie is a command-line HTTP client that makes it easy to interact and work with RESTful APIs. The CLI provided by HTTPie is designed to be as human-friendly as possible and is loved by developers creating services for the web. HTTPie can be used for testing, debugging, and generally interacting with any API and HTTP server.
React Hook Form
React Hook Form is a tiny form library without any dependencies. With the library it's simple to create React-based, performant, flexible and extensible forms with proper validation. React Hook Form is built with performance and DX in mind and embraces native form validation with simple integration to various UI libraries. Allowing developers to crete tiny size forms without dependancy, that follows HTML standards for validation. React Hook Form also provides resolvers support for third-party validation libraries like Yup, Zod, Superstruct, Joi or your custom sulotions.
Gatsby
Gatsby is a free and open source framework and site generator that helps developers to build blazing fast websites and apps. The framework is based on React and include a plugin ecosystem that can be used to extend the capabilities of Gatsby. With Gatsby you can pull data from headless CMSs, SaaS services, APIs, databases, even your file system with the help of GraphQL. If you are looking to build a fast website that scales with time, Gatsby might your best pick.
KeystoneJS
KeystoneJS is an open source JavaScript & Node.js framework that make build database-driven websites and web applications. Under the hood, KeystoneJS uses the express.js web server framework, and a MongoDB database via the mongoose object modelling framework.
Apache Airflow
Apache Airflow is a community created workflow management platform. The software is both free and open-source, and can be used to reduce complexity in organizations workflow. Apache Airflow is modular by nature, and has an architecture that makes it easy to customize to organizations specific needs. The software was was first developed at Airbnb to where it was used to programmatically author and schedule their workflows, allowing the organization to monitor them via the built-in Airflow dashboard.
StackStorm
StackStorm is an event driven automation platform that can be used for auto remediation, security event handling and infrastructure automation. Connect third-party applications with your stack to eliminate repetitive tasks and automate important events. StackStorm allows you to create if/then rules for complex workflows for DevOps and popular third-party services.
UIkit
UIkit A lightweight and modular front-end framework for developing fast and powerful web interfaces.
OpenUserCSS
With OpenUserCSS you can change the look of other websites. OpenUserCSS contains a wide range of themes that are easy to apply, to make websites more readable.
ArchiveBox
ArchiveBox is a free and open source, self-hosted web archive. With ArchiveBox, you can takes a list of URLs that you want to archive, and creates a local, static, browsable HTML clone of the content from those websites. ArchiveBox supports archiving of HTML, JavaScript, PDF, images and other media files.