Free open source alternatives for Windows

Browse free and open source software that runs on Windows. Find open-source alternatives, compare features, platforms and pricing, and pick the right Windows tool for you.

Beaudar

The name "Beaudar" is derived from the pronunciation of the word "expression" in Cantonese, and it is the Chinese version of "Utterances". For more information, please visit this blog. Open Source. 📖 No tracking, no ads, always free forever. ♻️ No data retention, all data is saved in the user's GitHub issue. 📚 Multiple themes derived from GitHub primer. 🌈 Lightweight, no font download, no JS framework loading. 🍜 What's the difference between Beaudar and Utterances? Chinese interface, closer distance to increase comment friendliness. Avatar modification, small avatar displayed on mobile is more exquisite. Identity identification, never breaks lines in any case. Comment time, reduced to the same size as the identity identification. Name display, the name of the commenter is enlarged for better recognition. Link opening, opens in a new tab in line with habits. Error information, presented in a friendly dialog box form. Comment avatar, can be selected using the Tab key. Loading status, default loading status can be configured to be removed. Remove source, click the loading icon to jump to the homepage. Refresh page, errors and exceptions will allow for refreshing. Maintain theme, the theme will remain after refreshing the page. Branch options, add repository branch items for verification. Comment order, can be selected to be in ascending or descending order by time. Comment position, can set the position of the comment input box.

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Intermittent Fasting Calculator

The Intermittent Fasting Calculator is a free, no-registration online tool that helps you plan the next meal and fasting window. Choose from popular methods like 16:8, 14:10, or create custom fasting hours. Simply input your preferred eating time and get instant results with a visual 24-hour timeline. Export your schedule as text or image for easy sharing and reference. Perfect for beginners and experienced fasters alike, with a modern interface that works seamlessly on all devices

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Cacoo

Create diagrams online with a collaborative online diagramming tool. Join the 390,000 users drawing diagrams, flowcharts, and wireframes online with Cacoo. Diagram from anywhere. Online diagramming tool for collaborating on wireframes, flowcharts, and more

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EmailOctopus

Manage and email your subscribers for far cheaper with EmailOctopus. Drag and drop email builder, powerful analytics, bounce/complaint tracking and more.

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Short.io

Short.io makes short links (vanity urls) on your own domain. Free signup, analytics and API. Chrome, slack, zapier and segment integrations.

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Queens Answer Today

Welcome to your daily LinkedIn Queens answers resource. Find the full grid solution, strategic placement guidance, and tips for improving your Queens skills.

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Jotform

Create forms and surveys for free with Jotform’s drag-and-drop form builder. Start collecting registrations, applications, orders, and payments today.

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Caricature Generator

AI-powered tool that transforms photos into creative, exaggerated caricature portraits instantly with professional customization options.

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twenty

twenty is a free, open-source alternative to Salesforce . The #1 Open-Source CRM Website · Documentation · Roadmap · Discord · Figma Why Twenty Twenty gives technical teams the building blocks for a custom CRM that meets complex business needs and quickly adapts as the business evolves. Twenty is the CRM you build, ship, and version like the rest of your stack. Learn more about why we built Twenty Installation Cloud The fastest way to get started. Sign up at twenty.com and spin up a workspace in under a minute, with no infrastructure to manage and always up to date. Build an app Scaffold a new app with the Twenty CLI: npx create-twenty-app my-app Define objects, fields, and views as code: import { defineObject , FieldType } from 'twenty-sdk/define' ; export default defineObject ( { nameSingular : 'deal' , namePlural : 'deals' , labelSingular : 'Deal' , labelPlural : 'Deals' , fields : [ { name : 'name' , label : 'Name' , type : FieldType . TEXT } , { name : 'amount' , label : 'Amount' , type : FieldType . CURRENCY } , { name : 'closeDate' , label : 'Close Date' , type : FieldType . DATE_TIME } , ] , } ) ; Then ship it to your workspace: npx twenty app:publish --private See the app development guide for objects, views, agents, and logic functions. Self-hosting Run Twenty on your own infrastructure with Docker Compose , or contribute locally via the local setup guide . Everything you need Twenty gives you the building blocks of a modern CRM (objects, views, workflows, and agents) and lets you extend them as code. Here's a tour of what's in the box. Want to go deeper? Read the User Guide for product walkthroughs, or the Documentation for developer reference. Learn more about apps in doc Learn more about version control in doc Learn more about primitives in doc Learn more about layouts in doc Learn more about AI in doc Learn more about CRM features in doc Stack TypeScript Nx NestJS , with BullMQ , PostgreSQL , Redis React , with Jotai , Linaria and Lingui Thanks Thanks to these amazing services that we use and recommend for code review (Greptile), catching bugs (Sentry) and translating (Crowdin). Join the Community Star the repo · Discord · Feature requests · Releases · X · LinkedIn · Crowdin · Contribute

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MarkText

Next generation markdown editor. A simple and elegant open-source markdown editor that focused on speed and usability.

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UXPin

Design tool like no other. Prototypes that feel real, with powers of code components, logic, states, and design systems. Join for free!

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Netlify

Realize the speed, agility and performance of a scalable, composable web architecture with Netlify. Explore the composable web platform now!

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utterances

A lightweight comments widget built on GitHub issues. Use GitHub issues for blog comments, wiki pages and more! Open source . 🙌 No tracking, no ads, always free. 📡🚫 No lock-in. All data stored in GitHub issues. 🔓 Styled with Primer , the css toolkit that powers GitHub. 💅 Dark theme. 🌘 Lightweight. Vanilla TypeScript. No font downloads, JavaScript frameworks or polyfills for evergreen browsers. 🐦🌲 how it works When Utterances loads, the GitHub issue search API is used to find the issue associated with the page based on url , pathname or title . If we cannot find an issue that matches the page, no problem, utterances-bot will automatically create an issue the first time someone comments. To comment, users must authorize the utterances app to post on their behalf using the GitHub OAuth flow . Alternatively, users can comment on the GitHub issue directly.

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Linkedin Pinpoint Answer

Linkedin Pinpoint Answer: Your All-in-One Companion for LinkedIn Brain Games Introduction If you enjoy daily brain challenges on LinkedIn, you may already know games like Pinpoint, Queen, Crossclimb, Tango, Zip, Mini Sudoku, and Patches. These puzzles test logic, pattern recognition, and problem-solving in fun but sometimes difficult ways. That’s where Linkedin Pinpoint Answer comes in. We are an all-in-one companion for solving and mastering LinkedIn puzzle games. Whether you're stuck, trying to keep your streak, or want to understand the logic behind answers, our platform provides instant solutions, clear explanations, and useful strategies across multiple games in one place. Main Features 1. Instant Answers Get fast and accurate solutions for Pinpoint, Queen, Crossclimb, Tango, Zip, Mini Sudoku, and Patches as soon as new puzzles are released. 2. Streak Protection Avoid losing progress. Timely updates help you maintain daily streaks across all LinkedIn puzzle games. 3. Daily Updates Always synced with LinkedIn’s puzzle schedule, offering the latest answers and breakdowns as soon as they go live. 4. Clear Explanations We don’t just give answers—we explain them. Learn solving logic and improve your puzzle skills over time. 5. Multi-Game Hub Play and learn multiple LinkedIn games in one place, from word puzzles to logic and number challenges. 6. Strategy Insights Discover patterns, traps, and solving methods to improve your long-term performance across all games. Conclusion LinkedIn puzzle games are becoming more diverse and challenging, from Pinpoint to Mini Sudoku and beyond. Linkedin Pinpoint Answer supports the full experience—providing answers when needed, explanations when useful, and strategies to help you improve. Whether you're stuck or want to stay ahead, this is your all-in-one hub for LinkedIn puzzle games.

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Pixso

Pixso is an all-in-one design collaboration tool that helps production and research teams create prototypes, ui/ux design, visual design, and low-code delivery for a more streamlined work experience, making team collaboration more efficient. sketch and figma formats are supported.

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Omlet

Omlet · Measure the Success of Your Components. Component analytics and insights for React.

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CandyCV

Start crafting your new eye-catching resume tailored to highlight your uniqueness. Easy, beautiful, and totally free.

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isso

A commenting server similar to Disqus. Comments written in Markdown Users can edit or delete own comments (within 15 minutes by default). Comments in moderation queue are not publicly visible before activation. SQLite backend Because comments are not Big Data. Disqus & WordPress Import You can migrate your Disqus/WordPress comments without any hassle. Configurable JS client Embed a single JS file, 65kB (20kB gzipped) and you are done. Supports Firefox, Safari, Chrome and Edge.

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Video to Text

Video to text is an ai-powered transcription service that converts video and audio files into clean, exportable text. the product is designed for creators, teams, and individuals who need fast, accurate speech-to-text conversion without setting up their own transcription pipeline. The app combines a simple upload flow with automated processing, speaker-aware transcription, and flexible export options. users can upload media, wait for the transcription to finish, and then download the result in the format that best fits their workflow.

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langgraph

langgraph is a free, open-source software / service you can self-host or use without paying. Low-level orchestration framework for building stateful agents. Trusted by companies shaping the future of agents – including Klarna, Replit, Elastic, and more – LangGraph is a low-level orchestration framework for building, managing, and deploying long-running, stateful agents. pip install -U langgraph Tip If you're looking to quickly build agents, check out Deep Agents — a higher-level package built on LangGraph for agents that can plan, use subagents, and leverage file systems for complex tasks. For an equivalent JS/TS library, check out LangGraph.js and the JS docs . Why use LangGraph? LangGraph provides low-level supporting infrastructure for any long-running, stateful workflow or agent: Durable execution — Build agents that persist through failures and can run for extended periods, automatically resuming from exactly where they left off. Human-in-the-loop — Seamlessly incorporate human oversight by inspecting and modifying agent state at any point during execution. Comprehensive memory — Create truly stateful agents with both short-term working memory for ongoing reasoning and long-term persistent memory across sessions. Debugging with LangSmith — Gain deep visibility into complex agent behavior with visualization tools that trace execution paths, capture state transitions, and provide detailed runtime metrics. Production-ready deployment — Deploy sophisticated agent systems confidently with scalable infrastructure designed to handle the unique challenges of stateful, long-running workflows. Tip For developing, debugging, and deploying AI agents and LLM applications, see LangSmith . LangGraph ecosystem While LangGraph can be used standalone, it also integrates seamlessly with any LangChain product, giving developers a full suite of tools for building agents. To improve your LLM application development, pair LangGraph with: Deep Agents – Build agents that can plan, use subagents, and leverage file systems for complex tasks. LangChain – Provides integrations and composable components to streamline LLM application development. LangSmith – Helpful for agent evals and observability. Debug poor-performing LLM app runs, evaluate agent trajectories, gain visibility in production, and improve performance over time. LangSmith Deployment – Deploy and scale agents effortlessly with a purpose-built deployment platform for long-running, stateful workflows. Discover, reuse, configure, and share agents across teams – and iterate quickly with visual prototyping in LangSmith Studio . Documentation docs.langchain.com – Comprehensive documentation, including conceptual overviews and guides reference.langchain.com/python/langgraph – API reference docs for LangGraph packages LangGraph Quickstart – Get started building with LangGraph Chat LangChain – Chat with the LangChain documentation and get answers to your questions Discussions : Visit the LangChain Forum to connect with the community and share all of your technical questions, ideas, and feedback. Additional resources Guides – Quick, actionable code snippets for topics such as streaming, adding memory & persistence, and design patterns (e.g. branching, subgraphs, etc.). LangChain Academy – Learn the basics of LangGraph in our free, structured course. Case studies – Hear how industry leaders use LangGraph to ship AI applications at scale. Contributing Guide – Learn how to contribute to LangChain projects and find good first issues. Code of Conduct – Our community guidelines and standards for participation. Acknowledgements LangGraph is inspired by Pregel and Apache Beam . The public interface draws inspiration from NetworkX . LangGraph is built by LangChain Inc, the creators of LangChain, but can be used without LangChain.

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