Open Source

Browse open source products and tools

Open Source

Deadlock Calculator

The Deadlock Calculator is a free fan-made build planner and hero item guide for Valve's popular MOBA shooter. Use the interactive builder to drag items onto your hero, set ability levels, and instantly see how your DPS and effective health change. You can share your builds with teammates or browse popular builds used by the community. Compare DPS and EHP across different item pathsBrowse detailed stats for all 38 heroes and 173 itemsStay informed with a regularly updated hero tier listView rank distribution percentiles and progression notesCompare heroes head-to-head to analyze matchups Built by fans for the Deadlock community, this tool is trusted by thousands of players aiming to improve their game. Whether you're a newcomer or a seasoned player, the Deadlock Calculator provides everything you need to optimize your build and climb the ranks.

Developer Tools Gaming Tech

GitNoir

The idea is simple: instead of learning Git through tutorials or documentation, you investigate a mystery and use Git commands to uncover clues. Things like checking commit history, switching branches, and exploring changes become part of solving the case.The goal is to make learning Git more interactive and fun, especially for people who find it difficult to grasp through traditional guides.

Education Tech Open Source

AgentSkills

AgentSkills is a curated directory that helps you discover and deploy community-built skills for AI agents. Powered by AI search, the platform organizes skills by use cases, industry leaders, or community trends, making it easy to find exactly what your agent needs. Each skill follows a standard SKILL.md format and is ready to deploy, enabling your agents to complete tasks more accurately and efficiently.The directory tracks agent skill growth over time and highlights trending skills with weekly install counts. Popular skills include tools for discovering other skills, optimizing React code, reviewing UI design, automating browsers, and creating production-grade frontends. With contributions from organizations like Vercel, Anthropic, and Microsoft, the library continues to expand rapidly.AgentSkills is sponsored by StartupDirs.com, and you can sign in to personalize your experience. Explore the trending list to see which skills are gaining traction this week.

Artificial Intelligence Developer Tools

ZeroGTM

ZeroGTM is an open-source AI SDR agent that replaces your entire sales stack. It runs a 5-step enrichment pipeline — Google Maps scraping, contact mining, AI-powered decision maker identification, email verification, and data sanitization. How to improve email deliverability for cold outreach? Better deliverability starts before you hit send — ZeroGTM pre-verifies every email address and ensures you're contacting the actual decision maker. MIT licensed, self-hostable with BYOK model. Free tier with 100 credits/month.

Artificial Intelligence Open Source

shadcn/studio

🚀 Shadcn Studio: The Ultimate AI-powered UI Toolkit for Faster Development!We’re excited to launch Shadcn Studio on Product Hunt! Whether you’re a designer or developer, Shadcn Studio helps you create beautiful, responsive UIs faster, smarter, and more efficiently.

Design Tools Open Source

A Deal Sweden AB

A Deal Sweden hjälper dig att hitta aktuella rabattkoder, deals och erbjudanden från svenska butiker. Sedan 2021 har vi handgranskat och levererat tusentals koder till våra läsare – alltid utan fejk-koder och onödigt brus. Vår kostnadsfria tjänst visar dagens alla aktiva rabattkoder, reor och erbjudanden. Du kan söka efter butik eller kategori, och kopiera koden direkt till kassan. För dig som vill ha koll på fynden utan att själv sålla erbjuder vi Premium. Med fem filterdimensioner – butik, kategori, rabattnivå, typ och kanal – får du endast de deals som matchar dina intressen. Välj att få notiser i realtid via push, Telegram eller e-post. Premium kostar 29 kr/mån efter en gratis provperiod på 21 dagar, utan bindningstid. Oavsett om du letar efter vardagsfynd, gör research inför stora shoppingdagar eller bara vill slippa reklambruset – Adealsweden är din rabattredaktion i Sverige.

Marketing Tools Mobile Development

HiCyou

Hi Cyou makes your directory smarter! This modern open-source platform is powered by AI to auto-categorize sites and generate content, with built-in semantic search for pinpoint discovery. User submissions are auto-verified via backlink checks, saving you time. Built with Next.js 14 and Tailwind, it’s fast, easy to deploy, and fully customizable—perfect for SaaS founders and developers to discover or showcase tools. Open source, self-hostable, and commercially usable—it’s your smart directory.

Marketing Tools Open Source

Vezlo AI SDK

Vezlo is an open-source AI Assistant SDK for SaaS applications. It transforms your codebase into an intelligent knowledge base with auto-generated documentation, semantic search, and a production-ready API server.Key Features:- Deep AST-based source code analysis (JS, TS, Python, Go, Rust)- Semantic knowledge base generation and instant code search- REST & WebSocket APIs with real-time chat and feedback- One-click Vercel deployment and self-hosting options- 100% open source under AGPL-3.0 licenseBuild, deploy, and scale AI assistants that truly understand your application.

Developer Tools Open Source

Energy Calculator

EnergyCalculator.blog is a comprehensive online hub created for anyone who wants clear, accurate, and easy to use tools for understanding energy, electricity, and solar calculations. Whether you are a student, engineer, homeowner, researcher, or simply someone curious about power usage, the website offers a full collection of calculators that turn complex formulas into simple, practical results.The platform focuses on delivering instant, reliable calculations without requiring technical knowledge. From estimating electricity consumption to sizing solar panels, converting volts, amps, watts, or determining battery backup time, every tool is designed to help users save time and make informed decisions. Each calculator follows standard international formulas, making the website useful for people in every country regardless of their local electricity system or tariff.One of the main strengths of EnergyCalculator.blog is its versatility. Users can calculate appliance power usage, evaluate monthly energy costs, check inverter requirements, convert units across electrical and solar categories, and explore detailed breakdowns that explain how each formula works. These tools help users understand what affects energy consumption, how to optimize usage, and how to design more efficient electrical or solar setups.The platform also serves as an educational resource. Every tool includes explanations, step by step methods, and helpful notes that make technical topics easy for beginners while still being accurate enough for professionals. Whether someone is learning about energy systems for the first time or creating a small solar project, the site provides both the tools and the knowledge they need.EnergyCalculator.blog is built to be fast, responsive, and accessible worldwide. No signup is required, and all tools are completely free to use. Overall, the platform empowers global users to manage their electricity use smarter, plan energy efficient solutions, and understand the technical side of power, all in a simple, user friendly environment.

Education Tech Green Tech

Puck

The drag-and-drop visual editor you can embed in any React application. It's MIT licensed, fully customizable, uses your own components, and saves your data wherever you want. No fees, no limits, no vendor lock-in.

CMS & No-Code Developer Tools

PreviousPage 1 of 2Next

Browse Categories

Artificial Intelligence925 projects SaaS637 projects Productivity430 projects Marketing Tools237 projects Design Tools212 projects Developer Tools145 projects Web Development102 projects Education Tech79 projects Video & Audio Tools77 projects Platforms73 projects APIs & Integrations72 projects Business Analytics72 projects E-commerce65 projects Finance & FinTech63 projects Graphics & Illustration61 projects Sales Tools56 projects SEO & Analytics45 projects Health Tech44 projects Security40 projects 3D & Motion Design30 projects Gaming Tech30 projects Data Science & Analytics29 projects CMS & No-Code27 projects Project Management26 projects UI/UX25 projects Blockchain & Crypto24 projects Writing & Editing23 projects Databases20 projects AR/VR17 projects Music & Audio17 projects DevOps & Cloud15 projects Mobile Development14 projects Open Source13 projects Machine Learning10 projects Testing & QA9 projects Natural Language Processing7 projects Wearables7 projects Hardware6 projects Prototyping6 projects Green Tech5 projects Internet of Things (IoT)5 projects Serverless3 projects Robotics0 projects

Quick Access

Featured Collections Trending Now Best of Month