Best of Open Source — June 2025

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   The Coding Sloth·42w

   16 Cool GitHub Repos You WILL Use (no pressure)

   A curated list of 16 useful GitHub repositories covering various programming topics including algorithm implementations, free programming books, project tutorials, system design resources, and open source alternatives. The repositories range from beginner-friendly learning materials like roadmaps and free books to more advanced topics like building programming languages and machine learning from scratch. Notable mentions include awesome lists for technology resources, algorithms repository with implementations in multiple languages, and practical tools like free developer services and public APIs.

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   Community Picks·42w

   The #1 Open-Source CRM

   Twenty is an open-source CRM platform that positions itself as a modern alternative to Salesforce. It offers customer data management with import capabilities, customization options, and automation through APIs and webhooks. Key features include task management, email synchronization, company and contact management, search functionality with keyboard shortcuts, and dark mode. The platform is designed for fast-growing companies that need adaptable workflows and full customization control over their customer relationship management system.

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   Hacker News·45w

   kanbn/kan: The open source Trello alternative.

   Kan is an open-source project management tool that serves as a Trello alternative, featuring board visibility controls, workspace collaboration, Trello import functionality, labels and filters, comments, and activity logging. Built with Next.js, tRPC, Better Auth, Tailwind CSS, Drizzle ORM, and React Email, it offers local development setup and welcomes community contributions under the AGPLv3 license.

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   Community Picks·42w

   OpenCut-app/OpenCut: The open-source CapCut alternative

   OpenCut is a free, open-source video editor designed as an alternative to CapCut, offering privacy-focused editing with timeline-based functionality, multi-track support, and real-time preview. Built with Next.js and React, it runs on web, desktop, and mobile platforms without watermarks or subscriptions. The project emphasizes keeping videos on the user's device and provides all basic editing features that are now paywalled in CapCut.

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   WebDev·43w

   I built an API for my darkest moments (and yours too)

   A developer created StayStrong, a simple Express.js REST API that serves over 500 motivational messages in English and Italian to help people during difficult times. The API features rate limiting, uses JSON files for data storage, and was born from personal experience with mental health struggles. The project aims to provide virtual support and encouragement to anyone who needs it.

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   selfh.st·43w

   Self-Host Weekly (20 June 2025)

   Weekly roundup of self-hosted software updates and new releases for June 20, 2025. Notable updates include Immich v1.135.0 with iOS widgets and Google Cast support, FileBrowser v2.33.0 with community maintenance, and various new tools like Cardholder PWA for loyalty card tracking and Cloudy Pad for cloud gaming. The newsletter covers 18 software updates, 20 new projects, and highlights Homarr as a modern dashboard solution for self-hosted services.

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   Community Picks·44w

   Chatwoot: The modern, open source, self-hosted customer support platform. Alternative to Intercom and Zendesk.

   Chatwoot is an open-source, self-hosted customer support platform that serves as an alternative to Intercom and Zendesk. It features Captain, an AI assistant that automates conversations and boosts agent productivity through smart suggestions and multilingual support. The platform consolidates customer conversations from multiple channels including live chat, email, social media, and messaging platforms like WhatsApp into one interface. It includes a customizable help center for self-service support and offers API integrations for custom use cases. Being open source, businesses can host it on their own infrastructure while maintaining full data ownership.

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   Hacker News·42w

   useautumn/autumn: Autumn is an open-source pricing & billing platform

   Autumn is an open-source billing platform that acts as a layer between Stripe and applications, enabling developers to implement complex pricing models like subscriptions, credit systems, usage-based billing, and custom plans without handling webhooks or payment state management. It provides a simple API with three core functions (attach, check, track) and can be deployed via cloud service or self-hosted using Docker.

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   Product Hunt·45w

   PostHog: The open source product OS

   PostHog is an open-source product analytics platform that combines analytics, session recording, feature flagging, and A/B testing in a single self-hostable solution. The platform serves over 140k customers and generates tens of millions in revenue. Users praise its comprehensive feature set that replaces multiple separate tools, generous startup credits, and trustworthy analytics specifically designed by developers for developers.

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    Community Picks·45w

    facebook/docusaurus: Easy to maintain open source documentation websites.

    Docusaurus is a static site generator built by Meta for creating and maintaining documentation websites. It offers simple setup with npm initialization, built-in localization support, customizable themes, and includes essential pages like docs, blog, and home sections. The project is open source, actively maintained, and designed to help developers focus on content rather than website infrastructure.

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    Horde·45w

    🚀 8bitcn: An Open-Source Success Story! ⚔️

    8bitcn is an open-source project that provides Shadcn UI components with a retro 8-bit aesthetic. In two months, it has attracted nearly 20,000 visitors and over 500 GitHub stars. The project offers complete coverage of Shadcn components styled with pixel art themes, along with a growing collection of blocks and retro design elements.

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    Syncfusion·43w

    Best 5 Open-Source LLMs for Developers: ChatGPT Alternatives in 2025

    Five powerful open-source large language models offer cost-effective alternatives to ChatGPT for developers in 2025. Llama 3 delivers GPT-3.5-level performance with commercial licensing freedom, while Mistral AI provides exceptional efficiency with smaller parameter counts. Falcon offers flexible model sizes from 7B to 180B parameters, BLOOM supports 46 natural languages for global applications, and Pythia serves as a research-grade suite for AI interpretability studies. These models enable local deployment, complete customization, and freedom from API restrictions, though they require careful consideration of hardware requirements and deployment strategies.

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    The Register·42w

    The European Union Linux desktop

    European governments are increasingly moving away from Microsoft Windows and Office to Linux-based alternatives, driven by concerns over digital sovereignty and data privacy. Denmark, Germany's Schleswig-Holstein, and French cities are leading this transition, citing worries about US political influence over American tech companies and the need to maintain control over government data. The shift is accelerated by Microsoft's push toward cloud subscriptions and recent incidents involving service disruptions to international organizations under US sanctions.

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    Tauri·41w

    Tauri Board Elections 2025

    Tauri is holding Board Director elections for 2025, with 5 seats available for 2-year terms. Candidates must apply by July 7th with a written introduction covering their background and vision for the Board. Voting by Working Group Members runs July 7-14, with results announced by July 19. The Board governs the cross-platform app building toolkit under The Commons Conservancy structure, using staggered elections to maintain continuity.

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    selfh.st·44w

    Self-Host Weekly (13 June 2025)

    Weekly roundup covering self-hosting news including AList's controversial commercialization and community fork creation, FileBrowser maintainers' departure, new releases like Bibliotecha book tracker, macOS 26 native Linux container support, and dozens of new self-hosted applications spanning analytics, media management, development tools, and productivity platforms.

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    Neon·45w

    app.build: An Open-Source AI Agent That Builds Full-Stack Apps

    app.build is an open-source AI agent that automatically builds and deploys full-stack applications with end-to-end testing and automated deployments. The tool can be started with a simple npx command, creates GitHub repositories, and deploys apps with authentication, databases, and hosting infrastructure. The agent uses a divide-and-conquer approach, breaking app creation into smaller tasks with quality checks at each step to ensure working applications.

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    Hacker News·43w

    Working on databases from prison: How I got here, part 2.

    A software engineer shares his remarkable journey from incarceration to joining Turso as a database developer. After enrolling in a prison college program that provided computer access, he rediscovered programming and began contributing to open source projects. Through Maine's remote work program for inmates, he first worked at Unlocked Labs before becoming a major contributor to Turso's Project Limbo, a SQLite rewrite. His dedication to learning database internals and consistent contributions eventually led to a full-time position at Turso, demonstrating how determination and skill development can create unexpected career opportunities even in challenging circumstances.

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    Collections·46w

    Issues in Git Commit Lead to Suspended Linux Kernel Maintainer Account

    Linus Torvalds suspended a Linux kernel maintainer's account after discovering over 6,000 falsified commits impersonating his authorship during the Linux 6.16 merge window. The maintainer attributed the issue to SSD failure and corrupted Git data recovery, but Torvalds deemed the scale too severe for hardware failure alone. The incident highlights the critical need for trust and verification processes in open source development.

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    Community Picks·45w

    Metlo

    Metlo is an open-source API security tool that provides real-time protection against malicious attacks. It automatically discovers and inventories API endpoints, detects threats like SQL injection and XSS attacks with minimal false positives, and blocks malicious traffic in real time. The tool integrates with various programming languages and platforms, can be deployed in under 15 minutes, and processes traffic with less than 0.2ms latency increase while using minimal system resources.

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    Awesome·42w

    How a solo dev got rich by building Laravel...

    Taylor Otwell's journey from a solo developer in Arkansas to Laravel's creator demonstrates how solving personal problems can lead to massive success. Starting as a private project to build PHP web apps faster, Laravel generated no revenue for three years until Forge, a deployment tool, provided the breakthrough that allowed Otwell to quit his day job in 2015. The story emphasizes two key principles: solve real problems you face personally, and tackle the hard parts first rather than perfecting superficial features.

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    Product Hunt·43w

    AroCrypt: Encrypt files, then make them vanish inside images

    AroCrypt combines AES-256 encryption with steganography to hide encrypted files inside PNG images. This cross-platform, open-source tool provides local file protection without requiring setup or dependencies, allowing users to securely store sensitive data in plain sight by embedding it within ordinary-looking images.

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    YouTube·46w

    All the open source software i use in 2025!

    A comprehensive overview of open source software tools used in 2025, covering operating systems, virtualization, networking, monitoring, backup solutions, and productivity applications. The content explores Linux as a desktop OS, Proxmox for virtualization, Netbird for VPN, Home Assistant for automation, NextCloud as a Microsoft 365 alternative, and various other self-hosted solutions for personal and business use.

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    Mental Outlaw·43w

    Europe is Dumping Microsoft

    Denmark's Ministry of Digital Affairs is rapidly transitioning from Microsoft products to Linux and LibreOffice, with completion expected by November 2024. The move aims to strengthen digital sovereignty and reduce dependency on foreign proprietary software. Germany's northernmost state is following suit, transitioning from Windows to Linux and Microsoft cloud services to German-controlled infrastructure. France has been ahead of this trend since 2005, deploying over 100,000 Linux machines in their police force and developing their own Linux distribution called Gendu. These transitions offer significant cost savings by eliminating license fees, extending hardware lifecycles, and creating local tech jobs while improving national security.

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    Dev Tools·42w

    Nixopus - Simplified ServerOps

    Nixopus is an open-source server management platform currently in alpha that aims to simplify server operations. It provides an integrated terminal, TLS management, automated Docker deployments similar to Vercel, file management, team collaboration features, and monitoring capabilities all in one unified interface. The project is actively seeking community feedback and contributors.

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    Hacker News·44w

    rommapp/romm: A beautiful, powerful, self-hosted rom manager and player.

    RomM is a self-hosted ROM manager that allows users to scan, organize, and play their game collections through a web interface. It supports metadata enrichment from multiple sources like IGDB and Screenscraper, covers 400+ gaming platforms, and enables browser-based gameplay using EmulatorJS. The tool offers features like achievement tracking, multi-user access, mobile responsiveness, and integration with various gaming platforms and frontends.

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