Will Ceolin

stalwart. All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).

better-hub. Re-imagining code collaboration for humans and agents

better-all. Better Promise.all with automatic dependency optimization

agent-browser. Browser automation CLI for AI agents

Mole. 🐹 Clean, uninstall, analyze, optimize, and monitor your Mac from the terminal.

next16-commerce. A performant e-commerce demo with Cache Components and Server/Client composition patterns using Next.js 16, React 19, Tailwind CSS and Prisma.

lingo.dev. Open-source localization engineering tools. Connects to Lingo.dev localization engineering platform for consistent, quality translations.

biome. A toolchain for web projects, aimed to provide functionalities to maintain them. Biome offers formatter and linter, usable via CLI and LSP.

function-database-latency. Visualize the latency of databases from Vercel Functions.

workflow. Workflow SDK: Build durable, reliable, and observable apps and AI Agents in TypeScript

base-ui. Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI.

prisma. Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB

ai. The AI Toolkit for TypeScript. From the creators of Next.js, the AI SDK is a free open-source library for building AI-powered applications and agents

kibo. A custom registry of composable, accessible and extensible components designed for use with shadcn/ui. Free and open source, forever.

coss. coss.com/ui is the official design system of Cal.com

ui. A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open Source. Open Code.

i18n-check. Validate i18n translation files

AnswerOverflow. Powering Discord content discovery by making web pages from threads for some of the largest servers, including Valorant, Cloudflare, C#, and Nuxt.

phoenix_test_playwright. Execute PhoenixTest cases in an actual browser via Playwright.

iOS. MEGA for iOS

pepicrft.me. Personal website

basecoat. A components library built with Tailwind CSS that works with any web stack.

vaul. A drawer component for React.

multigres. Vitess for Postgres

openpilot. openpilot is an operating system for robotics. Currently, it upgrades the driver assistance system on 300+ supported cars.

vscode-copilot-chat. Copilot Chat extension for VS Code

pgvector. Open-source vector similarity search for Postgres

zoonk. Turn any topic into clear, structured lessons

better-auth. The most comprehensive authentication framework

posthog-elixir. Elixir client for Posthog

phoenix_test. PhoenixTest provides a unified way of writing feature tests -- regardless of whether you're testing LiveView pages or static (non-LiveView) pages.

paper_trail. Track and record all the changes in your database with Ecto. Revert back to anytime in history.

mimic. A mocking library for Elixir

dub. The modern link attribution platform. Loved by world-class marketing teams like Framer, Perplexity, Superhuman, Twilio, Buffer and more.

saas-starter. Get started quickly with Next.js, Postgres, Stripe, and shadcn/ui.

paradex. Ecto fragments for ParadeDB 0.11.x - 0.15.x

paradedb. One Postgres for your application data, full-text search, vector retrieval, and aggregations. Home of the pg_search extension.

twenty. The open alternative to Salesforce, designed for AI.

text_parser. TextParser is an Elixir library for extracting and validating structured tokens from text, such as URLs, hashtags, @-mentions etc.

context_kit. ContextKit provides a modular toolkit for building robust Phoenix/Ecto contexts with standardized CRUD operations.

chartdb. Database diagrams editor that allows you to visualize and design your DB with a single query.

turso. Turso is an in-process SQL database, compatible with SQLite.

localless. VS Code for the Web + GitHub Codespaces

jido. 🤖 Autonomous agent framework for Elixir. Built for distributed, autonomous behavior and dynamic workflows.

instructor_ex. Structured outputs for LLMs in Elixir

yolo_elixir. A library for object detection and seamless YOLO model integration in Elixir

cachex. A powerful caching library for Elixir with support for transactions, fallbacks and expirations

place. An Elixir library and dataset of countries, states and cities around the world.

boombox. Boombox is a simple streaming tool built on top of Membrane

glot. Code playground

piston. A high performance general purpose code execution engine.

annotations. The CVS Health® Inclusive Design team has created new Figma annotation kits for multiple platforms.

salad_ui. Phoenix Liveview component library inspired by shadcn UI

polar. Polar — A billing platform for the intelligence era

hiring-without-whiteboards. ⭐️ Companies that don't have a broken hiring process

Ghost. Independent technology for modern publishing, memberships, subscriptions and newsletters.

ensemble. All-star cast of ARIA roles for testing Phoenix LiveView

homebridge-miot. Homebridge plugin for devices supporting the Xiaomi miot protocol

app-Android. Novo projeto do nosso app para Android.

app-iOS. O melhor pedaço da Maçã.

Fooocus. Focus on prompting and generating

ollama. Get up and running with Kimi-K2.6, GLM-5.1, MiniMax, DeepSeek, gpt-oss, Qwen, Gemma and other models.

classroomio. The Open Source Education Platform for Companies. A Simple and Beautiful Alternative to Moodle LMS, EdX, Thinkific and Teachable

open-core. C++

generative-models. Generative Models by Stability AI

metabase. The easy-to-use open source Business Intelligence and Embedded Analytics tool that lets everyone work with data :bar_chart:

blog. MDX

openstatus. 🫖 Status page with uptime monitoring & API monitoring as code 🫖

synclinear.com. End-to-end sync of Linear and GitHub.

pgroll. PostgreSQL zero-downtime migrations made easy

microfeed. a lightweight cms self-hosted on cloudflare, for podcasts, blogs, photos, videos, documents, and curated urls.

plane. 🔥🔥🔥 Open-source Jira, Linear, Monday, and ClickUp alternative. Plane is a modern project management platform to manage tasks, sprints, docs, and triage.

langchain. Elixir implementation of a LangChain style framework that lets Elixir projects integrate with and leverage LLMs.

harness. Harness Open Source is an end-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries.

pagefind. Static low-bandwidth search at scale

starlight. 🌟 Build beautiful, accessible, high-performance documentation websites with Astro

formbricks. Open Source Qualtrics Alternative

gts. ☂️ TypeScript style guide, formatter, and linter.

live_admin. Low-config admin UI for Phoenix apps, built on LiveView

LlamaIndexTS. Data framework for your LLM applications. Focus on server side solution

caddy. Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS

localias. custom local domain aliases for local dev servers

eslint-config. Opinionated ESLint config with sensible defaults.

novel. Notion-style WYSIWYG editor with AI-powered autocompletion.

open-source-alternatives. List of open-source alternatives to everyday SaaS products.

iconify_ex. Iconify

jekyllwind. Jekyll + Tailwind CSS boilerplate

private-gpt. Complete API layer for private AI applications on local models: RAG, skills, tools, MCP, text-to-sql, and more. Works with any OpenAI-compatible inference server.

llama. Inference code for Llama models

ink-ui. 💄 Ink-redible command-line interfaces made easy

open-llms. 📋 A list of open LLMs available for commercial use.

shap-e. Generate 3D objects conditioned on text or images

elixir-styler. An @elixir-lang code-style enforcer that will just FIFY instead of complaining

stripity-stripe. An Elixir Library for Stripe

StableLM. StableLM: Stability AI Language Models

phlex. Object-oriented views in Ruby.

faker. Faker is a pure Elixir library for generating fake data.

benchee. Easy and extensible benchmarking in Elixir providing you with lots of statistics!

SchoolGPT. A GPT-powered, human-reviewed curriculum for 1st-5th graders.

AutoGPT. AutoGPT is the vision of accessible AI for everyone, to use and to build on. Our mission is to provide the tools, so that you can focus on what matters.

tabler-icons. A set of over 6000 free MIT-licensed high-quality SVG icons for you to use in your web projects.

heroicons. A set of free MIT-licensed high-quality SVG icons for UI development.

plugins-quickstart. Get a ChatGPT plugin up and running in under 5 minutes!

posthog. 🦔 PostHog is an all-in-one developer platform for building successful products. We offer product analytics, web analytics, session replay, error tracking, feature flags, experimentation, surveys, data warehouse, a CDP, and an AI product assistant to help debug your code, ship features faster, and keep all your usage and customer data in one stack.

storj. Ongoing Storj v3 development. Decentralized cloud object storage that is affordable, easy to use, private, and secure.

ceph. Ceph is a distributed object, block, and file storage platform

minio. MinIO is a high-performance, S3 compatible object store, open sourced under GNU AGPLv3 license.

awesome-selfhosted. A list of Free Software network services and web applications which can be hosted on your own servers

awesome. 😎 Awesome lists about all kinds of interesting topics

obs-studio. OBS Studio - Free and open source software for live streaming and screen recording

flop_phoenix. Components for pagination, sortable tables and filter forms using Phoenix, Ecto and Flop

JARVIS. JARVIS, a system to connect LLMs with ML community. Paper: https://arxiv.org/pdf/2303.17580.pdf

xata-crawler. Sample crawler

ask-your-stack. Ask your stack demo

docusaurus-lunr-search. Local / Offline Search for docusaurus

docs. Documentation for Plausible Analytics

stream_data. Data generation and property-based testing for Elixir. 🔮

dolly. Databricks’ Dolly, a large language model trained on the Databricks Machine Learning Platform

chatgpt-retrieval-plugin. The ChatGPT Retrieval Plugin lets you easily find personal or work documents by asking questions in natural language.

earmark. Markdown parser for Elixir

TimeTravel. Phoenix LiveView TimeTravel Debugger

evals. Evals is a framework for evaluating LLMs and LLM systems, and an open-source registry of benchmarks.

discourse. A platform for community discussion. Free, open, simple.

django-htmx. Extensions for using Django with htmx.

htmx. </> htmx - high power tools for HTML

timex. A complete date/time library for Elixir projects.

groundcontrol. GroundControl SDKs

radical. radical therapy dev

docs. HTML

flyctl. Command line tools for fly.io services

explorer. Series (one-dimensional) and dataframes (two-dimensional) for fast and elegant data exploration in Elixir

distillery. Simplify deployments in Elixir with OTP releases!

phoenix-diff. See the changes needed when upgrading an Elixir Phoenix application

llama_index. LlamaIndex is the leading document agent and OCR platform

zod. TypeScript-first schema validation with static type inference

nimble_publisher. A minimal filesystem-based publishing engine with Markdown support and code highlighting

kysely. A type-safe TypeScript SQL query builder

optimate. A collection of libraries to optimise AI model performances

memos. Open-source, self-hosted note-taking tool built for quick capture. Markdown-native, lightweight, and fully yours.

oxc. ⚓ A collection of high-performance JavaScript tools.

headlessui. Completely unstyled, fully accessible UI components, designed to integrate beautifully with Tailwind CSS.

diffusers. 🤗 Diffusers: State-of-the-art diffusion models for image, video, and audio generation in PyTorch.

awesome-python. An opinionated list of Python frameworks, libraries, tools, and resources

awesome-design-patterns. A curated list of software and architecture related design patterns.

ts-reset. A 'CSS reset' for TypeScript, improving types for common JavaScript API's

askmybook. Python

csv-import. The open-source CSV importer, maintained by @tableflowhq

prompt-engine. A library for helping developers craft prompts for Large Language Models

made-with-liveview. Explore the real-world potential of Phoenix LiveView through a showcase of impressive web applications.

chroma. Search infrastructure for AI

astroship. Astroship is a starter template for startups, marketing websites, landing pages & blog. Built with Astro & TailwindCSS

transport-site. Rendre disponible, valoriser et améliorer les données transports

litefs. FUSE-based file system for replicating SQLite databases across a cluster of machines

tdesktop. Telegram Desktop messaging app

AI-For-Beginners. 12 Weeks, 24 Lessons, AI for All!

python-anti-patterns. An open collection of Python anti-patterns and worst practices.

toml. Tom's Obvious, Minimal Language

gpuweb. Where the GPU for the Web work happens!

live_motion. High performance animation library for Phoenix LiveView

pow. Robust, modular, and extendable user authentication system

authorize. Rule based authorization for Elixir

metamorphic-archive. Simple, open source, privacy-focused connectivity platform.

libsql. libSQL is a fork of SQLite that is both Open Source, and Open Contributions.

design-system. Helios Design System

daisyui. 🌼 🌼 🌼 🌼 🌼  The most popular, free and open-source Tailwind CSS component library

devops-exercises. Linux, Jenkins, AWS, SRE, Prometheus, Docker, Python, Ansible, Git, Kubernetes, Terraform, OpenStack, SQL, NoSQL, Azure, GCP, DNS, Elastic, Network, Virtualization. DevOps Interview Questions

database-js. A Fetch API-compatible PlanetScale database driver

website. The landing page & blog for Plausible

squoosh. Make images smaller using best-in-class codecs, right in the browser.

hammer. An Elixir rate-limiter with pluggable backends

dialyxir. Mix tasks to simplify use of Dialyzer in Elixir projects.

sobelow. Security-focused static analysis for the Phoenix Framework

credo. A static code analysis tool for the Elixir language with a focus on code consistency and teaching.

plug_cowboy. Plug adapter for the Cowboy web server

jason. A blazing fast JSON parser and generator in pure Elixir.

gettext. Internationalization and localization support for Elixir.

finch. Elixir HTTP client, focused on performance

swoosh. Compose, deliver and test your emails easily in Elixir

phoenix_swoosh. Swoosh <3 Phoenix

floki. Floki is a simple HTML parser that enables search for nodes using CSS selectors.

phoenix_html. Building blocks for working with HTML in Phoenix

postgrex. PostgreSQL driver for Elixir

phoenix_ecto. Phoenix and Ecto integration with support for concurrent acceptance testing

ecto_sql. SQL-based adapters for Ecto and database migrations

phoenix_live_view. Rich, real-time user experiences with server-rendered HTML

editor.js. A block-style editor with clean JSON output

precedent. An opinionated collection of components, hooks, and utilities for your Next.js project.

vscode-phoenix. Syntax highlighting support for Phoenix templates in Visual Studio Code.

vscode-elixir-ls. Elixir language support and debugger for VS Code, powered by ElixirLS.

elixir-ls. A frontend-independent IDE "smartness" server for Elixir. Implements the "Language Server Protocol" standard and provides debugger support via the "Debug Adapter Protocol"

flyctl-actions. :octocat: GitHub Action that wraps the flyctl

fly-pr-review-apps. Github Action for PR Review Apps on Fly.io

nanoGPT. The simplest, fastest repository for training/finetuning medium-sized GPTs.

unilm. Large-scale Self-supervised Pre-training Across Tasks, Languages, and Modalities

ColossalAI. Making large AI models cheaper, faster and more accessible

design-system-checklist. An open-source checklist to help you plan, build and grow your design system.

system-design-primer. Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

openai-cookbook. Examples and guides for using the OpenAI API

CasaOS. CasaOS - A simple, easy-to-use, elegant open-source Personal Cloud system.

scholar. Traditional machine learning on top of Nx