The Synthesis ToolKit in C++ (STK) is a set of open source audio signal processing and algorithmic synthesis classes written in the C++ programming language.

thumbor is a smart imaging service and enables on-demand cropping, resizing, applying filters and optimizing images.

Cropping photos automatically can be a frustrating experience with severed heads involved. thumbor uses AI for smart detection.

thumbor is an HTTP server and you can create as many different images as you want just by varying path parameters.

Ponzu is a powerful and efficient open-source HTTP server framework and CMS. It provides automatic, free, and secure HTTP/2 over TLS (certificates obtained via Let's Encrypt), a useful CMS and scaffolding to generate content editors, and a fast HTTP API on which to build modern applications.

Flyte is an open-source, container-native, structured programming and distributed processing platform implemented in Golang. It enables highly concurrent, scalable and maintainable workflows for machine learning and data processing.

A scalable, open source and free Security Incident Response Platform, tightly integrated with MISP (Malware Information Sharing Platform), designed to make life easier for SOCs, CSIRTs, CERTs and any information security practitioner dealing with security incidents that need to be investigated and acted upon swiftly.

An open-source distributed storage service you can self-host to fullfill many needs.

picfit is a reusable Go server to manipulate images (resize, thumbnail, etc.).

It will act as a proxy on your storage engine and will be served ideally behind an HTTP cache system like varnish.

It supports multiple storage backends and multiple key/value stores.

Restic is a modern backup program that can back up your files from Linux, BSD, Mac and Windows to many different storage types, including self-hosted and online services

Open Source Notion Alternative

Dendron is an open-source, local-first, markdown-based, note-taking tool. It's a personal knowledge management solution (PKM) built specifically for developers and integrates natively with IDEs like VS Code and VSCodium.

Open source emojis for designers, developers and everyone else!

MeiliSearch is a powerful, fast, open-source, easy to use and deploy search engine. Both searching and indexing are highly customizable. Features such as typo-tolerance, filters, and synonyms are provided out-of-the-box.

Budibase is an open-source low-code platform for creating internal apps in minutes. Supports PostgreSQL, MySQL, MSSQL, MongoDB, Rest API, Docker, K8s

Backstage is an open platform for building developer portals. Powered by a centralized software catalog, Backstage restores order to your microservices and infrastructure and enables your product teams to ship high-quality code quickly — without compromising autonomy.

Backstage unifies all your infrastructure tooling, services, and documentation to create a streamlined development environment from end to end.

Smooth git handover for remote pair/mob programming.

mob is an open source command line tool written in go
mob is the fastest way to hand over code via git
mob keeps your branches clean and only creates WIP commits on temporary branches
mob has a shared team timer timer.mob.sh

Airflow is a platform created by the community to programmatically author, schedule and monitor workflows.

Jina is a neural search framework that allows to build deep learning search applications in minutes. It provides scalable indexing, querying, understanding of any data: video, image, long/short text, music, source code, PDF, etc.

CryptoZombies is a free, open source, interactive code school that teaches you to build games on Ethereum. The course is designed for beginners to Solidity and starts off with the absolute basics.

Growth Book is an open source experimentation platform designed for companies that want to bring A/B testing in-house, but don't want to build it themselves.

Apache Superset is a modern data exploration and visualization platform