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.

lnmp

LEMP stack/LAMP stack/LNMP stack installation scripts for CentOS/Redhat Debian and Ubuntu This script is written using the shell, in order to quickly deploy LEMP / LAMP / LNMP / LNMPA / LTMP (Linux, Nginx/Tengine/OpenResty, MySQL in a production environment/MariaDB/Percona, PHP, JAVA), applicable to RHEL 7, 8, 9(including CentOS,RedHat,AlmaLinux,Rocky), Debian 9, 10, 11, 12, Ubuntu 16, 18, 20, 22, 24 and Fedora 27+ of 64. Script properties: Continually updated, Provide Shell Interaction and Autoinstall Source compiler installation, most stable source is the latest version, and download from the official site Some security optimization Providing a plurality of database versions (MySQL-8.4, MySQL-8.0, MySQL-5.7, MySQL-5.5, MariaDB-11.4, MariaDB-10.11, MariaDB-10.5, MariaDB-5.5, Percona-8.4, Percona-8.0, Percona-5.7, Percona-5.5, PostgreSQL, MongoDB) Providing multiple PHP versions (PHP-8.4, PHP-8.3, PHP-8.2, PHP-8.1, PHP-8.0, PHP-7.4, PHP-7.3, PHP-7.2, PHP-7.1, PHP-7.0, PHP-5.6, PHP-5.5, PHP-5.4, PHP-5.3) Provide Nginx, Tengine, OpenResty, Apache and ngx_lua_waf Providing a plurality of Tomcat version (Tomcat-10, Tomcat-9, Tomcat-8, Tomcat-7) Providing a plurality of JDK version (OpenJDK-8, OpenJDK-11, OpenJDK-17) According to their needs to install PHP Cache Accelerator provides ZendOPcache, xcache, apcu, eAccelerator. And php extensions,include ZendGuardLoader,ionCube,SourceGuardian,imagick,gmagick,fileinfo,imap,ldap,calendar,phalcon,yaf,yar,redis,memcached,memcache,mongodb,swoole,xdebug Installation Nodejs, Pureftpd, phpMyAdmin according to their needs Install memcached, redis according to their needs Jemalloc optimize MySQL, Nginx Providing add a virtual host script, include Let's Encrypt SSL certificate Provide Nginx/Tengine/OpenResty/Apache/Tomcat, MySQL/MariaDB/Percona, PHP, Redis, Memcached, phpMyAdmin upgrade script Provide local,remote(rsync between servers),Aliyun OSS,Qcloud COS,UPYUN,QINIU,Amazon S3,Google Drive and Dropbox backup script

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Pinpoint Answer Today

Pinpoint Answer Today is a fan-built companion for the daily LinkedIn puzzle. We deliver rapid solutions, thoughtful analysis, and strategy guides while operating independently from any organization.

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Backendless

Build apps at lightning speed with a visual low-code app builder featuring UI, Codeless logic, real-time database, messaging, and more.

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drawDB

Free, simple, and intuitive database design tool and SQL generator. DrawDB is a robust and user-friendly database entity relationship (DBER) editor right in your browser. Build diagrams with a few clicks, export sql scripts, customize your editor, and more without creating an account.

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Brewlet

This menulet makes it easier to use brew.sh. For example, you need to manually check if some of your packages can be updated. With Brewlet it's easy: if everything is working swimmingly, then you'll see the normal shadow icon. If updates are available to be installed, the icon will become colored, , to get your attention – along with a notification if you wish. Once clicked, you'll be able to upgrade your packages, among other options. In addition, Brewlet will periodically check the status of packages in the background, so you don't have to.

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RustFS

RustFS is developed with the popular and secure Rust language, compatible with S3 protocol. Suitable for AI/ML and massive data storage, big data, internet, industrial and confidential storage scenarios. Nearly free to use. Follows Apache 2 license, supports domestic confidential equipment and systems. High-performance enterprise-grade distributed file system Comprehensive features to meet enterprise-grade storage requirements Cross-Cloud RustFS leverages distributed architecture and object storage capabilities to provide excellent performance for AI and advanced analytics workloads, supporting data scaling from TB to EB levels. Secure & Reliable RustFS integrates with RustyVault to provide high-performance object storage security encryption, supporting multiple encryption modes to ensure data security and transparency. Version Control Object storage version control feature assigns unique identifiers to each object version, allowing users to access and manage historical versions through APIs or management interfaces. Unlimited Scaling RustFS system automatically balances node loads, ensures even data distribution, supports dynamic addition or removal of resources based on storage needs, achieving unlimited scaling. Object Read-Only Supports object locking mode, implementing WORM (Write Once, Read Many) functionality, preventing data from being modified or deleted within specified time ranges, ensuring data integrity. Active Replication Automatically creates multiple copies when objects are written and distributes them to different nodes, supports synchronous and asynchronous replication modes, providing high availability and disaster recovery capabilities.

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AI Animate Image

AI Animate Image turns still photos into short cinematic videos in about 60 seconds. Upload a portrait, product shot, cartoon, old photo, or AI-generated character — pick a motion style from the curated prompt library, and the AI brings it to life with natural motion, camera movement, and optional audio. Powered by Kling 3.0, Google VEO 3.1, and Seedance 2.0. Every output is MP4, ready for TikTok, Reels, YouTube Shorts, or e-commerce. Free credits on signup, no credit card required.

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continue

continue is a free, open-source alternative to GitHub Copilot . Continue Pioneering open-source coding agent What is Continue? Note: The continuedev/continue repository is no longer actively maintained and is read-only for all users. Continue is a coding agent available as a CLI , VS Code extension , and JetBrains plugin . Documentation To learn how to configure Continue, how it works, and how to customize it, check out the Continue Docs . Final 2.0.0 Release We polished Continue and did a final 2.0.0 release of the VS Code extension, CLI, and JetBrains plugin. This included removing anonymous telemetry, pulling out authentication, squashing bugs, and more. VS Code CLI JetBrains Note: We recommend using the Continue CLI instead of the JetBrains plugin. Contributors Thank you to the entire Continue community for helping us create a pioneering coding agent. What we built together pushed the boundaries of what AI developer tooling could be. We hope this codebase continues to serve as a foundation for others. Code friends License Apache 2.0 © 2023-2026 Continue Dev, Inc.

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Sticky Password

The lifetime password manager. Simplify your digital life Control all your passwords Access on all your devices Protect your data from the dark web Stop forgetting passwords now. With our free password manager, you can log in securely, autofill forms in a second, and use your passwords wherever you go.

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SendGrid

SendGrid Email API and Email Marketing Campaigns. Send at scale with SendGrid’s trusted email API and marketing campaigns platform, delivering 148+ billion emails for senders like you every month.

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TinyURL

TinyURL is the original URL shortener that shortens your unwieldly links into more manageable and useable URLs.

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AI Stock

AI Stock is an AI-driven stock analysis and investment research platform built to help investors produce professional-level equity research reports in just minutes. By integrating advanced artificial intelligence with real-time market data, company fundamentals, technical indicators, and news sentiment analysis, the platform provides in-depth insights across major global markets, including U.S. equities (NYSE & NASDAQ), Hong Kong stocks (HKEX), and China A-shares. With AIStock.tools, users can instantly generate comprehensive AI-powered stock reports that cover company overviews, valuation metrics, growth prospects, risk assessments, and forward-looking analysis. Investors can view real examples of AI-generated research in the reports library at https://aistock.tools/cases, and explore promising technology and AI-focused companies through the Top AI Stocks section at https://aistock.tools/top-ai-stocks. Beyond automated research, AIStock.tools also offers a Community Reports hub (https://aistock.tools/community), where users can discover shared analyses, collective intelligence, and community-driven investment ideas. New users can quickly get started with clear product explanations and onboarding materials available in the user guide at https://aistock.tools/guide, while flexible subscription plans and credit-based pricing details are outlined at https://aistock.tools/pricing. Designed for both individual investors and financial professionals, AIStock.tools brings institutional-grade stock analysis within reach—making high-quality investment research faster, smarter, and more accessible through modern AI technology.

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langchain

langchain is a free, open-source alternative to OpenAI Assistants API . The agent engineering platform. LangChain is a framework for building agents and LLM-powered applications. It helps you chain together interoperable components and third-party integrations to simplify AI application development — all while future-proofing decisions as the underlying technology evolves. Tip Just getting started? Check out Deep Agents — a higher-level package built on LangChain for agents that have built-in capabilites for common usage patterns such as planning, subagents, file system usage, and more. Quickstart uv add langchain from langchain . chat_models import init_chat_model model = init_chat_model ( "openai:gpt-5.5" ) result = model . invoke ( "Hello, world!" ) If you're looking for more advanced customization or agent orchestration, check out LangGraph , our framework for building controllable agent workflows. For an equivalent JS/TS library, check out LangChain.js . Tip For developing, debugging, and deploying AI agents and LLM applications, see LangSmith . LangChain ecosystem While the LangChain framework can be used standalone, it also integrates seamlessly with any LangChain product, giving developers a full suite of tools when building LLM applications. Deep Agents — Build agents that can plan, use subagents, and leverage file systems for complex tasks LangGraph — Build agents that can reliably handle complex tasks with our low-level agent orchestration framework Integrations — Chat & embedding models, tools & toolkits, and more LangSmith — Agent evals, observability, and debugging for LLM apps LangSmith Deployment — Deploy and scale agents with a purpose-built platform for long-running, stateful workflows Why use LangChain? LangChain helps developers build applications powered by LLMs through a standard interface for models, embeddings, vector stores, and more. Real-time data augmentation — Easily connect LLMs to diverse data sources and external/internal systems, drawing from LangChain's vast library of integrations with model providers, tools, vector stores, retrievers, and more Model interoperability — Swap models in and out as your engineering team experiments to find the best choice for your application's needs. As the industry frontier evolves, adapt quickly — LangChain's abstractions keep you moving without losing momentum Rapid prototyping — Quickly build and iterate on LLM applications with LangChain's modular, component-based architecture. Test different approaches and workflows without rebuilding from scratch, accelerating your development cycle Production-ready features — Deploy reliable applications with built-in support for monitoring, evaluation, and debugging through integrations like LangSmith. Scale with confidence using battle-tested patterns and best practices Vibrant community and ecosystem — Leverage a rich ecosystem of integrations, templates, and community-contributed components. Benefit from continuous improvements and stay up-to-date with the latest AI developments through an active open-source community Flexible abstraction layers — Work at the level of abstraction that suits your needs — from high-level chains for quick starts to low-level components for fine-grained control. LangChain grows with your application's complexity Resources Documentation — conceptual overviews and guides LangChain ecosystem overview — how LangChain, LangGraph, and Deep Agents fit together API reference — complete reference for all public classes, functions, and types Discussions — community forum for technical questions, ideas, and feedback LangChain Academy — comprehensive, free courses on LangChain libraries and products, made by the LangChain team Contributing Guide — how to contribute and find good first issues Code of Conduct — community guidelines and standards

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Opanorama.js

A 360-degree JS library based on Threejs with both gesture and gyroscope support.

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PM2

ADVANCED, PRODUCTION PROCESS MANAGER FOR NODE.JS PM2 is a daemon process manager that will help you manage and keep your application online 24/7 Advanced process manager for production Node.js applications. Load balancer, logs facility, startup script, micro service management, at a glance.

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Pinpoint Solver

Pinpoint Solver gives you daily LinkedIn Pinpoint answers and solutions, with instant clues, interactive explanations, and streak protection—solve faster and enjoy the game every day.

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hyperswitch

hyperswitch is a free, open-source alternative to Stripe . Composable Open-Source Payments Infrastructure 📁 Table of Contents What Can I Do with Hyperswitch? Quickstart (Local Setup) Cloud Deployment Hosted Sandbox (No Setup Required) Why Hyperswitch? Architectural Overview Our Vision Community & Contributions Feature Requests & Bugs Versioning License Team Behind Hyperswitch What Can I Do with Hyperswitch? Hyperswitch offers a modular, open-source payments infrastructure designed for flexibility and control. Apart from our Payment Suite offering, this solution allows businesses to pick and integrate only the modules they need on top of their existing payment stack — without unnecessary complexity or vendor lock-in. Each module is independent and purpose-built to optimize different aspects of payment processing. Learn More About The Payment Modules Details Cost Observability Advanced observability tools to audit, monitor, and optimize your payment costs. Detect hidden fees, downgrades, and penalties with self-serve dashboards and actionable insights. Read more Revenue Recovery Combat passive churn with intelligent retry strategies tuned by card bin, region, method, and more. Offers fine-grained control over retry algorithms, penalty budgets, and recovery transparency. Read more Vault A PCI-compliant vault service to store cards, tokens, wallets, and bank credentials. Provides a unified, secure, and reusable store of customer-linked payment methods. Also supports bring-your-own-vault to connect existing providers including VGS and TokenEx without re-tokenizing or migrating stored cards. Read more Intelligent Routing Route each transaction across Stripe, Adyen, Braintree, Worldpay, Checkout.com, and 120+ others to the PSP with the highest predicted auth rate. Reduce retries, avoid downtime, and minimize latency while maximizing first attempt success. Read more Reconciliation Automate 2-way and 3-way reconciliation with backdated support, staggered scheduling, and customizable outputs. Reduces manual ops effort and increases audit confidence. Read more Alternate Payment Methods Drop-in widgets for PayPal, Apple Pay, Google Pay, Samsung Pay, Pay by Bank, and BNPL providers like Klarna. Maximizes conversions with seamless one-click checkout. Read more Quickstart Local Setup via Docker # One-click local setup git clone --depth 1 --branch latest https://github.com/juspay/hyperswitch cd hyperswitch scripts/setup.sh This script: Detects Docker/Podman Offers multiple deployment profiles: Standard : App server + Control Center Full : Includes monitoring + schedulers Minimal : Standalone App server Provides access links when done If you need further help, check out our video tutorial . 👉 After setup, configure a connector and test a payment . Hosted Sandbox (No Setup Required) Hyperswitch offers a fully hosted sandbox environment that requires no setup. You can explore the Control Center, configure payment connectors, and test payments directly from the UI. What you can do in the Hosted Sandbox Access the full Control Center Configure payment connectors View logs, routing rules, and retry strategies Try payments directly from the UI Cloud Deployment You can deploy to AWS, GCP, or Azure using Helm Charts. Cloud Deployment Instructions . Architectural Overview Why Hyperswitch? Hyperswitch is a commercial open-source payments stack purpose-built for scale, flexibility, and developer experience. Designed with a modular architecture, Hyperswitch lets you pick only the components you need—whether it’s routing, retries, vaulting, or observability—without vendor lock-in or bloated integrations. Built in Rust for performance and reliability, Hyperswitch connects to Stripe, Adyen, Braintree, Worldpay, Checkout.com, Cybersource, and 120+ processors — exposing smart routing and retry logic, and provides a visual workflow builder in the Control Center. Whether you're integrating a full payment suite or augmenting an existing stack with a single module, Hyperswitch meets you where you are. Common starting points: teams moving from a single Stripe/ Stripe connect or Braintree integration to multi-PSP routing, merchants replacing a payment gateway with direct acquirer connections to TSYS, JP Morgan Payments, or other acquirers, and merchants rearchitecting their payments platform through Hyperswitch while keeping their existing VGS, TokenEx or other existing vault intact. “Linux for Payments” — Hyperswitch is a well-architected reference for teams who want to own their payments stack. We believe in: Embracing Payment Diversity: Innovation comes from enabling choice—across payment methods, processors, and flows. Open Source by Default: Transparency drives trust and builds better, reusable software. Community-Driven Development: Our roadmap is shaped by real-world use cases and contributors. Systems-Level Engineering: We hold ourselves to a high bar for reliability, security, and performance. Maximizing Value Creation: For developers, customers, and partners alike. Community-Driven, Enterprise-Tested: Hyperswitch is built in the open with real-world feedback from developers and contributors, and maintained by Juspay, the team powering payment infrastructure for 400+ leading enterprises worldwide. Supported Connectors Hyperswitch integrates with 100+ payment processors out of the box. Each connector has a dedicated guide covering credentials setup, webhook configuration, supported payment methods, and common failure modes. Processor Type Guide Global Payments Payment Gateway View → Stripe Payment Gateway View → Paypal Payment Gateway View → Adyen Payment Gateway View → Bank of America Payment Gateway View → 👉 Browse all available connectors → Hyperswitch Ecosystem Mapping Hyperswitch is built as a set of modular services and SDKs that work together. The Rust app server in this repo is the core, and the repositories below extend it with dashboards, client SDKs, and deployment tooling. 1. Core backend services The Rust services that process payments. The app server is the center of gravity; the vault and encryption service handle sensitive-data operations alongside it. hyperswitch-prism is a separate, lighter entry point: a unified connector library that can be used directly against payment processors without running the full switch. decision-engine is another standalone service: a routing control plane that selects the best gateway per transaction and can run independently of any orchestrator. hyperswitch card-vault encryption-service prism decision-engine Language Rust Rust Rust Rust Rust Role App server. Routing, retries, vaulting, observability. PCI-compliant card storage. Encryption, decryption, KMS. Unified connector library, 100+ processors. Routing control plane. Rule-based and success-rate gateway selection. Standalone, works with any orchestrator. Depends on card-vault, encryption-service encryption-service None None None 2. Dashboard Merchant-facing UIs for configuring connectors, routing, and viewing transactions. Both require the hyperswitch backend to be running. control-center control-center-embedded Language ReScript TypeScript Role Full merchant dashboard. Connectors, routing rules, analytics, API keys. Embeddable Hyperswitch components for partners and merchants surfacing Hyperswitch UI inside their own apps. Depends on hyperswitch backend hyperswitch backend 3. Web checkout SDKs How a browser talks to Hyperswitch. hyperswitch-client-core is the shared core, pulled in as a git submodule by every client SDK (web and mobile). hyperswitch-sdk-utils holds shared assets that merchants doing Headless Implementations consume directly. hyperswitch-web client-core react-hyper-js sdk-utils Language ReScript ReScript ReScript ReScript Distribution npm git submodule npm git submodule Role Primary web SDK. ReScript-built React library for unified checkout. Shared SDK core consumed transitively by every client SDK. Idiomatic React wrapper around the Hyper JS loader. Shared utilities and assets used across client-core and hyperswitch-web. Depends on hyperswitch backend None hyperswitch-web None 4. Mobile SDKs Native SDKs for embedding Hyperswitch checkout into mobile apps. All are built on top of hyperswitch-client-core , pulled in as a git submodule. Android iOS React Native Flutter Repository hyperswitch-sdk-android hyperswitch-sdk-ios react-native-hyperswitch flutter_hyperswitch Language Kotlin Swift TypeScript Dart Distribution Maven CocoaPods (SPM in progress) npm pub.dev Status Officially supported Officially supported Officially supported Officially supported Important An older repo, hyperswitch-sdk-react-native , is being deprecated and has already been removed from npm. Use react-native-hyperswitch instead. 5. Deployment & infrastructure Tooling for running Hyperswitch, from local development through production. hyperswitch-suite hyperswitch-helm Tooling Terraform (HCL) Helm charts Role Umbrella full-suite deployment that wires the core, vault, control-center, and web together. Recommended starting point for the full stack. Kubernetes deployments for GCP, Azure, or any K8s-compatible platform. Contributing We welcome contributors from around the world to help build Hyperswitch. Whether you're fixing bugs, improving documentation, or adding new features, your help is appreciated. Please read our contributing guidelines to get started. Join the conversation on Slack or explore open issues on GitHub . Feature requests & Bugs For new product features, enhancements, roadmap discussions, or to share queries and ideas, visit our GitHub Discussions For reporting a bug, please read the issue guidelines and search for existing and closed issues . If your problem or idea is not addressed yet, please open a new issue . Versioning Check the CHANGELOG.md file for details. Copyright and License This product is licensed under the Apache 2.0 License .

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Back4app

Low code backend to build modern apps.

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Webdis

Webdis, an HTTP interface for Redis with JSON output.

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Cachet

From startups to Fortune 500 companies, organizations worldwide trust Cachet to streamline their downtime communication, enhancing transparency with customers, teams, and stakeholders. Cachet, the open-source self-hosted status page system. Cachet 3.x Announcement For more information on the Cachet rebuild and our plans for 3.x, you can read the announcement here . Requirements PHP 8.2 or later Composer A supported database: MariaDB, MySQL, PostgreSQL or SQLite Installation, Upgrades and Documentation You can find documentation at https://docs.cachethq.io . Here are some useful quick links: Installing Cachet Getting started with Docker Demo To test out the v3 demo, you can log in to the Cachet dashboard with the following credentials: Email: [email protected] Password: test123 Note The demo will automatically reset every 30 minutes. Sponsors Security Vulnerabilities If you discover a security vulnerability within Cachet, please send an e-mail to [email protected] . All security vulnerabilities are reviewed on a case-by-case basis.

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