Johannes Kaufmann

react-prosemirror. A library for safely integrating ProseMirror and React.

python-sdk. ⚡ Official Python SDK for the Kombo Unified API

typescript-sdk. ⚡ Official TypeScript SDK for the Kombo Unified API

pollyjs. Record, Replay, and Stub HTTP Interactions.

f2. F2 is a cross-platform command-line tool for batch renaming files and directories quickly and safely. Written in Go!

stripe-recommendations. How to implement Stripe without going mad

terraform-hcloud-kube-hetzner. Optimized and Maintenance-free Kubernetes on Hetzner Cloud in one command!

sidekick. Bare metal to production ready in mins; your own fly server on your VPS.

commonmark-spec. CommonMark spec, with reference implementations in C and JavaScript

render. Go package for easily rendering JSON, XML, binary data, and HTML templates responses.

typst. A markup-based typesetting system that is powerful and easy to learn.

sn-pro. SN Pro Font Family

EB-Garamond. Digitization of the Garamond shown on the Egenolff-Berner specimen

pgtestdb. quickly run tests in their own temporary, isolated, postgres databases

localias. custom local domain aliases for local dev servers

river. Fast and reliable background jobs in Go

kysely. A type-safe TypeScript SQL query builder

drizzle-orm. ORM

kamal. Deploy web apps anywhere.

participle. A parser library for Go

gum. A tool for glamorous shell scripts 🎀

xyflow. React Flow | Svelte Flow - Powerful open source libraries for building node-based UIs with React (https://reactflow.dev) or Svelte (https://svelteflow.dev). Ready out-of-the-box and infinitely customizable.

zincsearch. ZincSearch . A lightweight alternative to elasticsearch that requires minimal resources, written in Go.

bluge. indexing library for Go

octosql. OctoSQL is a query tool that allows you to join, analyse and transform data from multiple databases and file formats using SQL.

boxesandglue. PDF rendering library for Go using TeX algorithms.

gomponents. HTML components in pure Go.

gqless. a GraphQL client without queries

plasmo. 🧩 The Browser Extension Framework

react-flip-numbers. 🎰 Flip your numbers in 3D

bud. The Full-Stack Web Framework for Go

hacker-laws. 🧠 Laws, Theories, Principles and Patterns for developers and technologists.

typestream. ⚡️ Next-generation data transformation framework for TypeScript that puts developer experience first

metarank. A low code Machine Learning personalized ranking service for articles, listings, search results, recommendations that boosts user engagement. A friendly Learn-to-Rank engine

saasify. The easiest way to monetize your API. 🚀

geopattern. :triangular_ruler: Create beautiful generative image patterns from a string in golang.

switchboard. Automated file organisation and routing for all your machines. :open_file_folder:

svu. semantic version utility

unisport. Makes all university sport classes of Berlin searchable

wrapcheck. A Go linter to check that errors from external packages are wrapped

toxiproxy. :alarm_clock: :fire: A TCP proxy to simulate network and system conditions for chaos and resiliency testing

slug. URL-friendly slugify with multiple languages support.

cli. ✨ A complete and self-contained solution for developers of any qualification to create a production-ready project with backend (Go), frontend (JavaScript, TypeScript) and deploy automation (Ansible, Docker) by running only one CLI command.

eslint-plugin-jsx-a11y. Static AST checker for a11y rules on JSX elements.

inclusive-design-checklist. Aims to be the biggest checklist of inclusive design considerations ever

rtl-styling. An extensive guide on how to style for RTL in CSS

imaginary. Fast, simple, scalable, Docker-ready HTTP microservice for high-level image processing

ssh_config. Go parser for ssh_config files

leva. 🌋 React-first components GUI

react-three-fiber. 🇨🇭 A React renderer for Three.js

parallel. Tiny utility for gracefully running functions in parallel with multi-error returning.

AuthorExtractor. Source code for the Medium article "Extracting the author of news stories with DOM-based segmentation and BERT"

news-please. news-please - an integrated web crawler and information extractor for news that just works

concourse. Concourse is a container-based automation system written in Go. It's mostly used for CI/CD.

gqlgen. go generate based graphql server library

genqlient. a truly type-safe Go GraphQL client

rts. RTS: request to struct. Generates Go structs from JSON server responses.

modelfox. ModelFox makes it easy to train, deploy, and monitor machine learning models.

go-redis. Redis Go client

mockery. A mock code autogenerator for Go

scrape-it. 🔮 A Node.js scraper for humans.

FluidFramework. Library for building distributed, real-time collaborative web applications

SyncedStore. SyncedStore CRDT is an easy-to-use library for building live, collaborative applications that sync automatically.

images. Image similarity in Golang. Versions 1, 2

next-optimized-images. 🌅 next-optimized-images automatically optimizes images used in next.js projects (jpeg, png, svg, webp and gif).

secure. HTTP middleware for Go that facilitates some quick security wins.

gock. HTTP traffic mocking and testing made easy in Go ༼ʘ̚ل͜ʘ̚༽

zola. A fast static site generator in a single binary with everything built-in. https://www.getzola.org

lingua-go. The most accurate natural language detection library for Go, suitable for short text and mixed-language text

mammoth.js. Convert Word documents (.docx files) to HTML

croc. Easily and securely send things from one computer to another :crocodile: :package:

health. A simple and flexible health check library for Go.

rpc. Simple RPC style APIs with generated clients & servers.

graffle. Simple GraphQL Client for JavaScript. Minimal. Extensible. Type Safe. Runs everywhere.

glamour. Stylesheet-based markdown rendering for your CLI apps 💇🏻‍♀️

revogrid. Powerful virtual data table smartsheet with advanced customization. Best features from excel plus incredible performance 🔋

gocache. ☔️ A complete Go cache library that brings you multiple ways of managing your caches

mafs. React components for interactive math

kratos. Headless cloud-native authentication and identity management written in Go. Scales to a billion+ users. Replace Homegrown, Auth0, Okta, Firebase with better UX and DX. Passkeys, Social Sign In, OIDC, Magic Link, Multi-Factor Auth, SMS, SAML, TOTP, and more. Runs everywhere, runs best on Ory Network.

cloudquery. Data pipelines for cloud config and security data. Build cloud asset inventory, CSPM, FinOps, and vulnerability management solutions. Extract from AWS, Azure, GCP, and 70+ cloud and SaaS sources.

age. A simple, modern and secure encryption tool (and Go library) with small explicit keys, no config options, and UNIX-style composability.

visx. 🐯 visx | visualization components

v8go. Execute JavaScript from Go

notify. A dead simple Go library for sending notifications to various messaging services.

go-fluent-ffmpeg. A Go implementation of fluent-ffmpeg

go-enry. A faster file programming language detector

datascript. Immutable database and Datalog query engine for Clojure, ClojureScript and JS

pterm. ✨ PTerm is a modern Go module to easily beautify console output. Featuring charts, progressbars, tables, trees, text input, select menus and much more 🚀 It's completely configurable and 100% cross-platform compatible.

lipgloss. Style definitions for nice terminal layouts 👄

mjml-react. React component library to generate the HTML emails on the fly

pdf-lib. Create and modify PDF documents in any JavaScript environment

darwinkit. Native Mac APIs for Go. Previously known as MacDriver

react-cosmos. Sandbox for developing and testing UI components in isolation

encore. The infrastructure platform for the intelligence era

upframe.io. 🦄 Connecting first-time founders to mentors in the tech industry.

web. Face the Facts Web Application

react-tiny-popover. A simple and highly customizable popover react higher order component with no other dependencies! Typescript friendly.

react-select. The Select Component for React.js

CODE-Bachelor-Thesis-Template. TeX

understanding-csrf. What are CSRF tokens and how do they work?

remotion. 🎥 Make videos programmatically with React

go-financial. A go port of numpy-financial functions and more.

react-uploady. Modern file uploading - components & hooks for React

pirsch. Pirsch is a drop-in, server-side, no-cookie, and privacy-focused analytics solution for Go.

exoframe. Exoframe is a self-hosted tool that allows simple one-command deployments using Docker

gotrue. An JWT based API for managing users and issuing JWT tokens.

mljar-supervised. Python package for AutoML on Tabular Data with Feature Engineering, Hyper-Parameters Tuning, Explanations and Automatic Documentation

comlink. Comlink makes WebWorkers enjoyable.

analytics. Lightweight analytics abstraction layer for tracking page views, custom events, & identifying visitors

box-cli-maker. Render highly customizable boxes in the terminal

MeetingBar. 🇺🇦 Your meetings at your fingertips in the macOS menu bar

vbb-rest. An HTTP API for Berlin & Brandenburg public transport.

1BahnQL. Single unified API for all DBOpenData APIs implemented with GraphQL.

zustand. 🐻 Bear necessities for state management in React

motion. A modern animation library for React and JavaScript

emailengine. Headless email client

slate. A completely customizable framework for building rich text editors. (Currently in beta.)

k3sup. bootstrap K3s over SSH in < 60s 🚀

apk-mitm. 🤖 A CLI application that automatically prepares Android APK files for HTTPS inspection

dbmate. 🚀 A lightweight, framework-agnostic database migration tool.

authboss. The boss of http auth.

orchestra. Orchestra is a library to manage long running go processes.

statsviz. Visualise Go runtime metrics in real time

smartcrop. smartcrop finds good image crops for arbitrary crop sizes

tablewriter. ASCII table in golang

survey. A golang library for building interactive and accessible prompts with full support for windows and posix terminals.

bubbles. TUI components for Bubble Tea 🫧

go-password-validator. Validate the Strength of a Password in Go

gohalt. Gohalt 👮‍♀🛑: Fast; Simple; Powerful; Go Throttler library

connect. Fancy stream processing made operationally mundane

bubbletea. A powerful little TUI framework 🏗

go-edlib. 📚 String comparison and edit distance algorithms library, featuring : Levenshtein, LCS, Hamming, Damerau levenshtein (OSA and Adjacent transpositions algorithms), Jaro-Winkler, Cosine, etc...

gatus. Automated developer-oriented status page with alerting and incident support

gophish. Open-Source Phishing Toolkit

react-konva. React + Canvas = Love. JavaScript library for drawing complex canvas graphics using React.

swr. React Hooks for Data Fetching

react-highlight. ReactJS component that help you highlight ranges of text and give you callbacks to detect user selection.

gamut. Go package to generate and manage color palettes & schemes 🎨

bit. Bit is a modern Git CLI

hetty. An HTTP toolkit for security research.

guide. The Uber Go Style Guide.

valhalla. Open Source Routing Engine for OpenStreetMap

fiber. ⚡️ Express inspired web framework written in Go

go-htmlinfo. Go HTML Info package for extracting meaningful information from html page

goyave. 🍐 The enterprise REST API framework

script. Making it easy to write shell-like scripts in Go

otp. TOTP library for Go

dockertest. Write better integration tests! Dockertest helps you boot up ephermal docker images for your Go tests with minimal work.

mdx. Markdown for the component era

gopass. The slightly more awesome standard unix password manager for teams

amplify-flutter. A declarative library with an easy-to-use interface for building Flutter applications on AWS.

fyne. Cross platform GUI toolkit in Go inspired by Material Design

the-super-tiny-compiler. :snowman: Possibly the smallest compiler ever

go-jose. An implementation of JOSE standards (JWE, JWS, JWT) in Go

editly. Slick, declarative command line video editing & API

gentle. 📮 A social app for compassion!

goldmark. :trophy: A markdown parser written in Go. Easy to extend, standard(CommonMark) compliant, well structured.

flatend. Quickly build microservices using p2p networking in NodeJS/Go.

deployr. A simple golang application to automate the deployment of software releases.

hcl. HCL is the HashiCorp configuration language.

badactor. BadActor.org An in-memory application driven jailer written in Go

dhall-lang. Maintainable configuration files

GoSSHa. Go SSH agent: can execute commands at thousands of servers and upload files to them

gobinaries. Golang binaries compiled on-demand for your system

go-tea. Tea provides an Elm inspired functional framework for interactive command-line programs.

zdog. Flat, round, designer-friendly pseudo-3D engine for canvas & SVG

trix. A rich text editor for everyday writing

besticon. Favicon service written in Go

file-icon-vectors. A collection of file type icons in SVG format

gmuch. Gmuch provides a wrapper around notmuch providing HTTP and RPC connectivity.

bimg. Go package for fast high-level image processing powered by libvips C library

casso. A Go implementation of the Cassowary constraint solving algorithm.

talon. Python

lrserver. LiveReload server for Go [golang]

maildir-tools. Golang-based utility which can be used for scripting Maildir things, and also as a basic email client

robotgo. RobotGo, Go Native cross-platform RPA, GUI automation, Auto test and Computer use @vcaesar

go.notmuch. Go language bindings for notmuch mail

Discord-SpeedDating-Bot. Discord Bot for performing speed dating as part of online events e.g. Hackathons

discord-bot-cud. Simple Discord but that creates voice channels for pairs of 2

go-sciter. Golang bindings of Sciter: the Embeddable HTML/CSS/script engine for modern UI development

thdwb. 🌭 The hotdog web browser and browser engine 🌭

dbr. Additions to Go's database/sql for super fast performance and convenience.

zxcvbn. Low-Budget Password Strength Estimation

go-msgauth. 🔏 A Go library and tools for DKIM, DMARC and Authentication-Results

reasonml-cheat-sheet. A cheat sheet for ReasonML -- WIP

sqlc. Generate type-safe code from SQL

pester. Go (golang) http calls with retries and backoff

eazye. The gangsta gangsta way to pull email

hermes. Golang package that generates clean, responsive HTML e-mails for sending transactional mail

go-git. A highly extensible Git implementation in pure Go.

webrtc. Pure Go implementation of the WebRTC API

grab. A download manager package for Go

Ambar-SwiftUI. Ambar is a macOS menu bar app built with SwiftUI.

pock. Widgets manager for MacBook Touch Bar

goquery. A little like that j-thing, only in Go.

migrate. Database migrations. CLI and Golang library.

code-surfer. Rad code slides <🏄/>

awsip. AWS IP region locator. Supports both IPv4 and IPv6.

flowy. The minimal javascript library to create flowcharts ✨

dataflowkit. Extract structured data from web sites. Web sites scraping.