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Open Source

1. 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 SaaS

2. 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 Open Source

3. 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 Open Source

4. Free OG Image Generator

[myogimage.com](https://myogimage.com/) is a free and user-friendly online tool designed to help users quickly and easily create eye-catching Open Graph (OG) images, blog cover images, and Twitter/X header images. No registration or login is required to access its full range of features.## Core Features & Advantagesmyogimage.com offers a rich set of features that make creating social media images simple and efficient:* Completely Free, No Sign-up Needed: Users can visit the website and start creating immediately without any account or fees.* Multi-Platform Support: Not only can it generate standard OG images, but it also supports creating specifically sized header images for platforms like Twitter/X.* Professional Templates: Offers a variety of professionally designed templates to suit different needs.* Advanced Customization: * Backgrounds: Set solid or gradient backgrounds (with adjustable direction) and add a grid overlay (with adjustable opacity). * Content: Customize text, upload logos, or other image assets. * Element Adjustments: Allows users to tweak the properties of various template elements.* Flexible Export Options: Supports exporting generated images as PNG (recommended), JPEG, or WebP, balancing image quality and file size.* Instant Preview: A WYSIWYG (What You See Is What You Get) interface allows users to see changes in real-time as they design.* Modern Design Features: Provides quality typography options and visual effects to help users create contemporary-looking images.* Fast and Efficient: An intuitive interface and optimized workflow enable users to complete image creation in seconds.* Practical Guides: The website also provides detailed steps and code examples for adding Open Graph images to HTML and Next.js (App Router) projects, along with professional tips for optimizing OG images.## How to UseUsing myogimage.com is incredibly simple:1. Visit the Website: Go to [myogimage.com](https://myogimage.com/).2. Choose a Template: Pick a template from the available options to get started.3. Customize Your Design: * Edit text content. * Upload your logo or other relevant images. * Adjust background colors, gradient directions, grid overlays, and more. * Tweak other template elements as needed.4. Preview Your Creation: See a live preview of your image in the right-hand panel.5. Save Your Image: Select your desired format (PNG, JPEG, or WebP) and download the image.## Why Choose myogimage.com?myogimage.com is an invaluable tool for developers, marketers, bloggers, and content creators who need to generate social media preview images for their websites, blog posts, or any online content. It addresses the common challenges of manual design or using complex software for OG images. It provides a quick, free, and effective solution that helps enhance the visual appeal and click-through rates of content shared on social media.In summary, with its straightforward operation, comprehensive features, and completely free access, myogimage.com is a highly recommended tool for generating OG images.

Design Tools Developer Tools Open Source

5. LaunchitX

LaunchitX is the launch platform designed to give your product enduring visibility.Why Choose LaunchitX?Sustained Exposure: Your product won't disappear after a few hours. LaunchitX provides a platform for continuous discovery, giving your project the long-term attention it deserves.Focus on Quality: We limit the number of daily launches. This prevents information overload and ensures every product gets the spotlight it deserves.Fuel Your Growth: Whether you're launching an MVP or a complete product, LaunchitX helps you attract early adopters and keep your project active and visible.The LaunchitX Advantage:Broader Audience: LaunchitX helps you showcase your product to a wide range of potential users, including indie developers, startups, open-source projects, and freelancers.Easy to Use: We offer a clean and straightforward interface that makes it simple to launch your product and track its performance.Rich Features: LaunchitX comes with a variety of features like categories, tags, comments, and upvotes to help you better engage with the community and promote your product.

Open Source Platforms

6. ArrayCat

ArrayCat is a free tool for converting a list of data or any string into an array. For example, you can convert a CSV file into a PHP array. Or, into a JavaScript array. Or even into a SQL insertion, which is technically not an array, but cats get confused sometimes.

Developer Tools Open Source

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