Open Source Software for Self-Hosted
knex.js
Knex.js is a free and open-source JavaScript query builder for relational databases. The query builder supports Postgres, MSSQL, MySQL, MariaDB, SQLite3, Oracle, and Amazon Redshift and is designed for easy-of-use and portability. Knex.js can be used with both callbacks and promises and supports transactions and connection pooling while providing async flow control, a stream interface, fully featured query and schema builders.
MJML
A framework that makes responsive email easy, MJML does this by transpiling <mj-*>-style markup language into responsive email HTML with nested tables and inline CSS. With MJML you can design email responsive email templates that works on the most popular email clients.
Django Ninja
Django Ninja is a free and open source web framework for building REST APIs with Django and Python 3.6+ based type hints. It shares many similarities with FastAPI, another popular Python framework for building APIs. Django Ninja now brings the same methodology to Django users wanting to build modern APIs using OpenAPI (Swagger) standards and JSON schema. It integrates well with the Django ORM and the ecosystem of third-party Django applications. Already the framework is used by multiple companies with live projects.
Whitestorm.js
WhitestormJS is a free and open source framework that can be used to build 3D web applications using Three.js technology. WhitestormJS uses Three.js for rendering your scene and objects and Physi.js for simulating physics. Both those libraries are already included in the build and should work properly out-of-the-box. Developers use WhitestormJS to build interactive 3D applications for the web.
dORM
dORM is a lightweight SQL query builder for Deno and PostgreSQL and is currently being expanded into a full-fledged object-relational mapping (ORM) tool. Its purpose is to make your life easier when making SQL queries and let you write queries in familiar Javascript/Typescript syntax and dot notation.
Owncast
With Owncast you can host your own streams. Owncast is a free and open-source, self-hosted live video and web chat server for use with existing popular broadcasting software. Owncast includes a web interface to your video with built-in chat that is available once you start the server. The web interface was specifically built to be editable by anybody comfortable tweaking a web page. Allowing streamers to customize the experience for their audience.
All-in-One Video Gallery
All-in-One Video Gallery is a free video gallery for WordPress. With All-in-One Video Gallery users can add videos as posts on their WordPress-powered website. The plugin handles everything needed to build a scalable, searchable, SEO optimized video gallery or video sharing site.
Apache MXNet
Apache MXNet makes it easy to create, train and deploy deep neural networks. It's a free and open-source framework developed by the Apache Software Foundation. With Apache MXNet you can utilize maximum efficiency of your hardware and supports multi-gpu or multi-host training with near-linear scaling efficiency. Allowing you to achieve maximum efficiency when training your models.
Locust
Locust is a modern load testing framework an open source load testing tool written in Python. With Locust it's super simple to load test any form of web application or website, regardless of language, framework or type. Allowing you to define user behaviour with Python code, and swarm your system with millions of simultaneous users.
Guess.js
Guess.js is a free and open-source library that provides tools to simplify predictive data-analytics driven approaches to improving user-experiences on the web. The library is written in JavaScript and aims to lower the friction of consuming and applying this thinking to all modern sites and apps, including building libraries & tools for popular workflows.