Software for Self-Hosted
TagSpaces
TagSpaces is privacy aware, open source, cross-platform file browser. It helps organizing your files and folders with tags and colors.
Semantic UI
Semantic UI is a free and open-source framework for HTML and CSS. The framework treats words and classes as exchangeable concepts. Classes use syntax from natural languages like noun/modifier relationships, word order, and plurality to link concepts intuitively. Semantic UI provides similar benefits to that of BEM or SMACSS style guidelines.
Let's Encrypt
Let's Encrypt is a non-profit certificate authority that provides TLS certificates for websites and web applications, free of charge. Let's Encrypt is managed by the Internet Security Research Group which operates to create a more secure web. Let's Encrypt provides an API that can be used by other internet services to provide free SSL to customers that want to host their websites over HTTPS.
GitBook
Pydio
Pydio is an open-source and self-hosted file-sharing and synchronisation software that you can run on your own server. Pydio fits right into your data management policy, as it provides audit and reporting tools. With Pydio you can empower your organization by letting them control and manage content on the server while at the same time complying with the company security rules.
Foundation
Foundation is a free and open-source HTML & CSS framework that can be used to build and design websites and web applicaitons in a structured way.
Flarum
A free and open-source modern forum software written in PHP. With Flarum you can eaisly setup your own discussion froum and host it online.
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.