🌍 **Open Source Tools** - Discover the best open-source projects and tools from around the world! This repository is a growing collection of open-source projects and free tools, updated with new content each week. Whether you’re a professional, a student, or just someone looking for useful tools, this repository has something for everyone. We aim to share projects that simplify your work and boost productivity. ## 🚀 Latest Additions 📅 **[Weekly Dev Tech Pulse#3](https://blog.serdarcanb.dev/weekly-dev-tech-pulse-3/)** Date: 29.12.2024 Check out more projects in the [projects section](https://github.com/serdarcanb/open-source-tools). ## 🔖 Categories Click the categories below to filter tools by type: - [Software Tools](#software-tools) - [Tools](#tools) - [Video & Podcast](#video--podcast) - [Article](#article) ## 🌟 Featured Projects ### Software Tools | Name | ⭐ Stars | Free/Paid | Description | Tags | |:------------------------------------------------------------------- |:---------------------------------------------------------------------------:|----------:|----------------------------------------------------------------------------------------------|--------------------------------------------------------------------| | [hcengineering/platform](https://github.com/hcengineering/platform) | ![Github Stars](https://img.shields.io/github/stars/hcengineering/platform) | Free | Huly — All-in-One Project Management Platform (alternative to Linear, Jira, Slack, Notion, Motion) | `self-hosted` `open-source` `alternative` `application-management` | | [CasaOS](https://github.com/IceWhaleTech/CasaOS) | ![Github Stars](https://img.shields.io/github/stars/IceWhaleTech/CasaOS) | Free | CasaOS - A simple, easy-to-use, elegant open-source Personal Cloud system. | `personal-cloud` `open-source` `self-hosted` `file-storage` | | [formbricks](https://github.com/formbricks/formbricks) | ![Github Stars](https://img.shields.io/github/stars/formbricks/formbricks) | Free | Open Source Survey Platform.| `open-source` `form-builder` `survey-builder` `form-analytics` `self-hosted` | | [nextcloud/server](https://github.com/nextcloud/server) | ![Github Stars](https://img.shields.io/github/stars/nextcloud/server) | Free | ☁️ Nextcloud server, a safe home for all your data. | `open-source` `cloud-storage` `file-sharing` `data-security` `self-hosted` | | [twentyhq/twenty](https://github.com/twentyhq/twenty) | ![Github Stars](https://img.shields.io/github/stars/twentyhq/twenty) | Free | Building a modern alternative to Salesforce, powered by the community. | `open-source` `business-management` `team-collaboration` `productivity` | | [golemcloud/golem](https://github.com/golemcloud/golem) | ![Github Stars](https://img.shields.io/github/stars/golemcloud/golem) | Free | Golem is an open source durable computing platform that makes it easy to build and deploy highly reliable distributed systems. | `distributed-systems` `open-source` `blockchain` `cloud-computing` | | [siyuan-note/siyuan](https://github.com/siyuan-note/siyuan) | ![Github Stars](https://img.shields.io/github/stars/siyuan-note/siyuan) | Free | A privacy-first, self-hosted, fully open source personal knowledge management software, written in typescript and golang. | `note-taking` `open-source` `self-hosted` `productivity` | | [argmaxinc/WhisperKit](https://github.com/argmaxinc/WhisperKit) | ![Github Stars](https://img.shields.io/github/stars/argmaxinc/WhisperKit) | Free | On-device Speech Recognition for Apple Silicon | `open-source` `speech-to-text` `ai` `transcription` `machine-learning` | | [hoppscotch/hoppscotch](https://github.com/hoppscotch/hoppscotch) | ![Github Stars](https://img.shields.io/github/stars/hoppscotch/hoppscotch) | Free | Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia) | `open-source` `api-testing` `developer-tools` | | [middlewarehq/middleware](https://github.com/middlewarehq/middleware) | ![Github Stars](https://img.shields.io/github/stars/middlewarehq/middleware) | Free | ✨ Open-source DORA metrics platform for engineering teams ✨ | `open-source` `ci/cd` `dora-metrics` | | [n8n-io/n8n](https://github.com/n8n-io/n8n) | ![Github Stars](https://img.shields.io/github/stars/n8n-io/n8n) | Free | Free and source-available fair-code licensed workflow automation tool. | `open-source` `no-code` `self-hosted` `workflow-automation` `integration` | | [glanceapp/glance](https://github.com/glanceapp/glance) | ![Github Stars](https://img.shields.io/github/stars/glanceapp/glance) | Free | A self-hosted dashboard that puts all your feeds in one place | `open-source` `dashboard` `self-hosted` `productivity` | | [toeverything/AFFiNE](https://github.com/toeverything/AFFiNE) | ![Github Stars](https://img.shields.io/github/stars/toeverything/AFFiNE) | Free | There can be more than Notion and Miro. AFFiNE is a next-gen knowledge base that brings planning, sorting and creating all together. | `open-source` `note-taking` `self-hosted` `productivity` `knowledge-management` | | [CorentinTh/it-tools](https://github.com/CorentinTh/it-tools) | ![Github Stars](https://img.shields.io/github/stars/CorentinTh/it-tools) | Free | Collection of handy online tools for developers, with great UX. | `open-source` `web-based` `self-hosted` `productivity` `developer-tools` | | [Cinnamon/kotaemon](https://github.com/Cinnamon/kotaemon) | ![Github Stars](https://img.shields.io/github/stars/Cinnamon/kotaemon) | Free | An open-source RAG-based tool for chatting with your documents.| `open-source` `document-chatbot` `self-hosted` `retrieval-augmented-generation` `ai` | | [AppFlowy-IO/AppFlowy](https://github.com/AppFlowy-IO/AppFlowy) | ![Github Stars](https://img.shields.io/github/stars/AppFlowy-IO/AppFlowy) | Free | AppFlowy is an open-source alternative to Notion, designed for users who want complete control over their productivity tool. | `open-source` `productivity` `self-hosted` `notion-alternative` `customizable` | | [mattermost/mattermost](https://github.com/mattermost/mattermost) | ![Github Stars](https://img.shields.io/github/stars/mattermost/mattermost) | Freemium | Mattermost is an open-source messaging and collaboration platform designed for secure team communication and workflow integration. | `open-source` `collaboration` `self-hosted` `team-communication` `slack-alternative` | | [semaphoreui/semaphore](https://github.com/semaphoreui/semaphore) | ![Github Stars](https://img.shields.io/github/stars/semaphoreui/semaphore) | Free | Semaphore is an open-source, self-hosted platform for deploying and managing Ansible playbooks with an intuitive web interface | `open-source` `ansible` `self-hosted` `terraform` `ui` | | [netdata/netdata](https://github.com/netdata/netdata) | ![Github Stars](https://img.shields.io/github/stars/netdata/netdata) | Free | Netdata is an open-source, real-time monitoring and troubleshooting tool for systems and applications, providing detailed insights through an intuitive web interface. | `open-source` `monitoring` `self-hosted` `real-time` `ui` | | [dgtlmoon/changedetection.io](https://github.com/dgtlmoon/changedetection.io) | ![Github Stars](https://img.shields.io/github/stars/dgtlmoon/changedetection.io) | Free | “changedetection.io is an open-source tool that monitors websites for content changes, alerting users to updates, restocks, and price changes.” | `open-source` `website-monitoring` `self-hosted` `crawler` `ui` | | [keephq/keep](https://github.com/keephq/keep) | ![Github Stars](https://img.shields.io/github/stars/keephq/keep) | Free | "KeepHQ is an open-source platform for monitoring business and engineering metrics, offering customizable alerts and insights for teams.” | `open-source` `aiops` `monitoring` `alerts` `ui` | | [nezhahq/nezha](https://github.com/nezhahq/nezha) | ![Github Stars](https://img.shields.io/github/stars/nezhahq/nezha) | Free | "Nezha is a lightweight, self-hosted monitoring and operations tool for servers and websites, supporting system status, HTTP, TCP, and Ping monitoring." | `open-source` `self-hosted` `monitoring` `alerts` `ui` | | [knadh/listmonk](https://github.com/knadh/listmonk) | ![Github Stars](https://img.shields.io/github/stars/knadh/listmonk) | Free | High performance, self-hosted newsletter and mailing list manager with modern dashboard, single binary app. Supports email marketing campaigns and subscriber management. | `open-source` `self-hosted` `newsletter` `email-marketing` `mailing-list` `campaign-management` | | [jesseduffield/lazydocker](https://github.com/jesseduffield/lazydocker) | ![Github Stars](https://img.shields.io/github/stars/jesseduffield/lazydocker) | Free | "Lazydocker is a simple terminal UI for both Docker and Docker Compose, designed to simplify container management." | `open-source` `self-hosted` `docker` `ui` `container-management` | | [upscayl/upscayl](https://github.com/upscayl/upscayl) | ![Github Stars](https://img.shields.io/github/stars/upscayl/upscayl) | Free | Free and Open Source AI Image Upscaler for Linux, MacOS and Windows. | `open-source` `ai` `image-upscaling` `cross-platform` `image-processing` | | [lobehub/lobe-chat](https://github.com/lobehub/lobe-chat) | ![Github Stars](https://img.shields.io/github/stars/lobehub/lobe-chat) | Free | Modern-design AI chat framework supporting multiple AI providers (OpenAI/Claude 3/Gemini/Ollama), with knowledge base and multi-modal features. | `open-source` `ai-chat` `self-hosted` `multi-modal` `knowledge-base` | | [RocketChat/Rocket.Chat](https://github.com/RocketChat/Rocket.Chat) | ![Github Stars](https://img.shields.io/github/stars/RocketChat/Rocket.Chat) | Freemium | The communications platform that puts data protection first. Enterprise-grade video conferencing, chat, and file sharing. | `open-source` `team-chat` `video-conferencing` `self-hosted` | | [mattermost/mattermost](https://github.com/mattermost/mattermost) | ![Github Stars](https://img.shields.io/github/stars/mattermost/mattermost) | Freemium | Secure, self-hosted communication platform with team messaging, file sharing, and integrations. | `open-source` `team-chat` `collaboration` `self-hosted` | | [zulip/zulip](https://github.com/zulip/zulip) | ![Github Stars](https://img.shields.io/github/stars/zulip/zulip) | Freemium | Powerful open source team chat with unique threaded discussions model. | `open-source` `team-chat` `threaded-discussions` `self-hosted` | | [chatwoot/chatwoot](https://github.com/chatwoot/chatwoot) | ![Github Stars](https://img.shields.io/github/stars/chatwoot/chatwoot) | Freemium | Customer engagement platform alternative to Intercom, Zendesk, Salesforce Service Cloud. | `open-source` `customer-support` `live-chat` `self-hosted` | | [linagora/Twake](https://github.com/linagora/Twake) | ![Github Stars](https://img.shields.io/github/stars/linagora/Twake) | Free | Open source collaborative workspace with team chat, file storage, calendar, and task management. | `open-source` `collaboration` `team-chat` `self-hosted` | | [revoltchat/revolt](https://github.com/revoltchat/revolt) | ![Github Stars](https://img.shields.io/github/stars/revoltchat/revolt) | Free | Privacy-focused, customizable chat platform built with modern web technologies. | `open-source` `chat` `privacy` `self-hosted` | | [hoarder-app/hoarder](https://github.com/hoarder-app/hoarder) | ![Github Stars](https://img.shields.io/github/stars/hoarder-app/hoarder) | Free | Self-hostable bookmark and note-taking app with AI-based automatic tagging and full text search. | `open-source` `bookmarks` `self-hosted` `ai` `note-taking` | | [qodo-ai/qodo-cover](https://github.com/qodo-ai/qodo-cover) | ![Github Stars](https://img.shields.io/github/stars/qodo-ai/qodo-cover) | Freemium | AI-powered tool for automated test generation and code coverage enhancement, supporting multiple programming languages. | `open-source` `testing` `ai` `test-automation` `code-coverage` | | [1Panel-dev/1Panel](https://github.com/1Panel-dev/1Panel) | ![Github Stars](https://img.shields.io/github/stars/1Panel-dev/1Panel) | Free | Web-based Linux server management tool with container management, database administration, website management, and system monitoring capabilities. | `open-source` `server-management` `linux` `docker` `self-hosted` | | [apache/airflow](https://github.com/apache/airflow) | ![Github Stars](https://img.shields.io/github/stars/apache/airflow) | Free | Platform to programmatically author, schedule, and monitor workflows. Supports data pipelines, ML workflows and task automation. | `open-source` `workflow` `automation` `data-engineering` `scheduler` | ### Tools | Name | Description | Tags | |:------------------------- |:------------------------------------------------------------------------------------------------------------------------------------------------------------------- |:------------------------ | | [Miro](https://miro.com/) | Miro, formerly known as RealtimeBoard, is a digital collaboration platform designed to facilitate remote and distributed team communication and project management. | `Data` `Analytics` `Draw`| | [focusbrew](https://www.focusbrew.dev/) | Elevate your productivity with FocusBrew, the ultimate Chrome extension for focused work sessions. | `extension` `pomodoro` `Free` | | [raycast](https://www.raycast.com/) | Your shortcut to everything. | `productivity` `automation` `Free-Options` `keyboard-shortcuts` | | [termius](https://termius.com/) | Termius is a modern SSH client that simplifies secure server management, offering cross-platform access and collaboration features for Dev teams. | `ssh` `cli` `Free-Options` | | [ophiuchi-desktop](https://github.com/apilylabs/ophiuchi-desktop) | A local https proxy server using docker as backend. | `ssl` `local` `Free` | | [epublifier](https://github.com/maoserr/epublifier) | Converts some webnovels to epub format. | `extension` `epub` `Free` | | [gitbutler](https://github.com/gitbutlerapp/gitbutler) | GitButler is an open-source Git client that allows developers to manage multiple branches at once with virtual branches, enhancing productivity and simplifying workflows. | `git-client` `open-source` `Free` | | [Captain](https://getcaptain.co/) | Manage Docker containers from the menu bar in macOS. | `docker` `open-source` `Free` | | [Warestack](https://www.warestack.com/) | Warestack automates operational tasks and workflows triggered by code changes, integrating with platforms like GitHub. | `devops` `automation` `Free` `code-automation`| | [Cursor](https://www.cursor.com/) | AI-powered code editor with intelligent code completion, natural language editing, and codebase understanding capabilities. | `ai` `code-editor` `Freemium` `productivity` `pair-programming` | | [Windsurf](https://codeium.com/windsurf) | The first agentic IDE with AI flows, deep contextual awareness, and multi-file editing capabilities. | `ai` `code-editor` `Freemium` `productivity` `ide` | ### Video & Podcast | Name | |:---------------------------------------------------------------------------------------------------------------------------------------------- | | [How Notion Scaled to 100 Million Users Without Their Database Exploding](https://www.youtube.com/watch?v=HruBoinmPBA) | | [How Uber Handles TRILLIONS of Transactions](https://www.youtube.com/watch?v=qGAPokt6Buo) | | [The Untold Story of GitHub](https://www.youtube.com/watch?v=THtsXAewIVc) | | [The Untold Story of VS Code](https://www.youtube.com/watch?v=vBhaFvwvRac) | | [How to Build a Successful Open Source Project](https://www.youtube.com/watch?v=t779DVjCKCs) | ### Article | Name | |:---------------------------------------------------------------------------------------------------------------------------------------------- | | [Kafka 101: A Beginner’s Guide to Understanding Kafka](https://towardsdev.com/kafka-101-a-beginners-guide-to-understanding-kafka-2cd797864614) | | [OpenTelemetry Collector: everything a developer needs to know](https://www.cncf.io/blog/2024/10/07/opentelemetry-collector-everything-a-developer-needs-to-know/) | | [Design Spotify - System Design Interview](https://blog.algomaster.io/p/design-spotify-system-design-interview) | | [How to Measure Design System at Scale](https://www.uber.com/en-TR/blog/design-system-at-scale/?uclick_id=4db44676-1e60-43aa-bc42-31592352028b) | | [What is Cloud Computing? Beginner's Guide to Cloud Computing with AWS](https://www.freecodecamp.org/news/beginners-guide-to-cloud-computing-with-aws/) | | [MicroK8s and ngrok: easy ingress at the edge](https://www.cncf.io/blog/2024/10/16/microk8s-and-ngrok-easy-ingress-at-the-edge/) | | [How to Self-host a Container Registry](https://www.freecodecamp.org/news/how-to-self-host-a-container-registry/) | | [System Design Netflix A Complete Architecture](https://www.geeksforgeeks.org/system-design-netflix-a-complete-architecture/) | | [Designing and testing a highly available Kafka cluster on Kubernetes](https://learnk8s.io/kafka-ha-kubernetes) | | [How to Self-host a Container Registry](https://www.freecodecamp.org/news/how-to-self-host-a-container-registry) | | [First eBPF program](https://prateek-singh.hashnode.dev/first-ebpf-program) | | [How Amazon S3 Works](https://newsletter.systemdesign.one/p/s3-architecture) | | [Git Branching Strategies](https://newsletter.techworld-with-milan.com/p/git-branching-strategies) | | [10 Best Resources to Learn Software Architecture in 2025](https://medium.com/javarevisited/10-best-resources-to-learn-software-architecture-in-2025-2524ac91dc76) | | [Message Queues in System Design](https://levelup.gitconnected.com/message-queues-in-system-design-0440a1221023) | | [How I Study Consistently With A Full-Time Job](https://medium.com/write-a-catalyst/how-i-study-consistently-with-a-full-time-job-fc3362793def) | | [From Monolithic to Microservices: Architectures 101](https://dev.to/encore/from-monolithic-to-microservices-architectures-101-3f2e) | | [How Nginx Was Able to Support 1 Million Concurrent Connections on a Single Server](https://newsletter.systemdesign.one/p/how-does-nginx-work) | | [ClickHouse: A Deep Dive into Modern Real-Time Analytics](https://towardsdev.com/clickhouse-a-deep-dive-into-modern-real-time-analytics-32442257a5b8) | | [API Design 101: From Basics to Best Practices](https://levelup.gitconnected.com/api-design-101-from-basics-to-best-practices-a0261cdf8886) | | [Top 10 Microservices Design Patterns You Should Know](https://medium.com/@sylvain.tiset/top-10-microservices-design-patterns-you-should-know-1bac6a7d6218) |