Open Source
The best 50 Open Source AI tools - Free & Paid
Explore 50 AI for Open Source
Open Apps is an open-source app directory that offers a curated selection of free alternatives to popular software tools, enabling users to find quality open-source solutions across various categories for development and productivity needs.
Free
OpenCode.ai is an open-source AI coding agent that runs directly in your terminal, IDE, or desktop. It connects to 75+ LLM providers, supports offline use, and enables multi-session collaboration for code review and debugging.
Free
OpenArt is an AI art generator that provides powerful tools for you to generate and edit images, especially artist assets, that you can directly use and edit to improve.
Freemium
An online image tool with features including background removal, image resizing, text addition, color palettes, conversion, and AI-powered social media bios, market slogans, business name ideas, and hashtag generation.
Free
Marketing Tool aggregates free utilities for marketing and web performance. It offers keyword research, backlink and SEO audits, social media scheduling, hashtag generation, adโbudget calculators, speed testing, image compression, plagiarism checks, URL shortener, QR code. No registration required.
Free
Jam is an AI-powered debugging assistant that streamlines the debugging process through automated source code analysis and code fix suggestions while ensuring privacy and security. It integrates with a Chrome extension for bug reporting workflow.
Free
The AI Workspace is a tool that generates imaginary images using AI. It allows users to train models using photos and supports custom identifiers and prompts.
ToolBaz offers 85+ free AI tools powered by GPTโ5, Claude, Gemini, MetaโAI for content marketing, business communication, creative and academic writing, and technical documentation. Includes textโtoโimage, textโtoโspeech, intuitive, privacyโfocused interface.
Freemium
Open Knowledge Maps is an AI search engine that visualizes scientific literature across disciplines, clustering related papers to reveal topic connections and trends. It supports varied document types, offers highโquality metadata, multilingual browsing, and openโsource integration.
Freemium
Openโsource AI codeโreview platform that plugs into GitHub, GitLab, Bitbucket, and Azure DevOps at the pullโrequest level. Modelโagnostic, it runs custom rule sets, tracks technical debt, and delivers realโtime metrics without storing source code.
Freemium
An all-in-one cloud toolkit for content creation, including picture editing, AI copywriting, video editing, and more.
Freemium
Openkoda is an openโsource insurtech platform providing modular templates for claims, policy, and embedded insurance. It offers AI analytics, automated documents, roleโbased access, multiโtenant clustering, and API hooks for rapid, scalable development without vendor lockโin.
Freemium
OSS Chat delivers a single chat interface that connects users to openโsource project resourcesโdocs, issue trackers, papers, and community Q&A. It uses ChatGPT and a vector database to provide quick, privacyโcompliant access to upโtoโdate knowledge across diverse tech domains.
Freemium
Calcforge is an open-source platform offering a suite of calculators for civil, mechanical, and electrical engineering. It includes tools for structural analysis, design evaluations, and project planning, facilitating collaboration and enhancing productivity.
Free
GitHub Copilot is an AI pair programmer that uses the OpenAI Codex to suggest code and entire functions in real-time.
Free trial
OpenClaw is a personal AI assistant that automates email, calendar, task and chat workflowsโclearing inboxes, composing and sending messages, scheduling events, checking reservations, integrating chats and cloud services, with persistent memory, background jobs and developer-friendly self-hosting an
Free
Replit is a collaborative browser-based IDE with AI-powered tools for software development, real-time multiplayer editing and deployment, templates and tutorials, and hosting and monetization options.
Subscription
A free, user-friendly, multilingual, and open-source AI image generator that utilizes Stable Diffusion.
Free
TheToolBus offers free, noโwatermark PDF and image utilities for small business owners, including merge, compress, OCR, conversion, background removal, calculators, QR codes, and AI text extraction, all accessible without signโup.
Freemium
Blackbox AI is an AI-powered tool for developers that searches and autocompletes code snippets across multiple programming languages and repositories, extracts code from videos and PDFs, and converts queries into code.
Free trial
- $5/mo
NinjaTools is an AI workspace that integrates various functionalities, offering tools for image generation, music creation, and document analysis. It supports collaboration, manages chat data across models, and features categorized prompt libraries for enhanced productivity.
Free trial
- $11/mo
Open Lovable is an open-source AI website builder that transforms existing websites into React/Next.js applications. It utilizes web scraping and AI models for analysis, enabling quick cloning and customization of production-ready components.
Freemium
FreedomGPT unifies access to 400+ AI models, showing sideโbyโside answers for voting and autoโselection via leaderboard. It keeps privacy safe, runs on Windows/macOS, and is openโsource for community contribution and collaboration.
Free
OpenRouter gives one API key to access 300+ models from 60+ providers, SDKโcompatible, with visual routing, automated fallโback, edge hosting, dataโpolicy controls, and agentic tools for building efficient autonomous workflows.
Freemium
n8n is an openโsource workflow automation platform with a visual canvas and custom JavaScript/Python support. It connects to 500+ integrations, enables AI agents and RAG, offers audit logs, realโtime alerts, and can be selfโhosted on Docker or Kubernetes.
Free
Windsurf is an AI coding tool that enhances developer workflows with features like Cascade for code understanding, real-time error detection, integrated IDE plugins, and collaboration tools, enabling efficient coding, debugging, and project management.
Subscription
Open SaaS is an open-source framework for building scalable applications with React and Node.js, offering features like pre-configured authentication, payment integrations, TypeScript support, an admin dashboard, and easy deployment without vendor lock-in.
Free
Clip Studio Paint offers natural brush strokes, over 100,000 customizable brushes, vector layers, 3D pose references, perspective rulers, onionโskin animation up to 24 frames, and cloud sync across Windows, macOS, iPad, Android, and Chromebook.
Free trial
Orca Projects AI Assistant helps teams design, edit, and share detailed architectural diagrams of web and infrastructure stacks. It supports imports, exports, collaboration, version control, and preโbuilt templates for popular tech stacks.
Freemium
OpenAI Codex CLI is a terminal-based, open-source coding agent that uses natural language to automate development tasks like code generation, testing, refactoring, and codebase understanding, with secure sandboxed execution and Git integration.
Free
TheToolBus offers free, instant tools for small business owners, including PDF merge/split/compress, Word/Excel conversion, OCR, PowerPoint export, image compression/resizing/format conversion, background removal, QR code and websiteโtoโPDF creation, plus business calculators and utilities like pass
Freemium
OpenAssistantGPT is an openโsource SaaS that lets you build noโcode AI chatbots for websites. It autoโcrawls a URL, supports GPTโ4/3.5, handles file attachments, SAML/SSO, API calls, and web search, with GitHub source and Vercel SDK.
Freemium
- $18/mo
Claude Code is an AI-powered coding assistant that operates within the terminal, automating tasks like editing files, fixing bugs, executing tests, and managing git workflows. It enhances developer productivity through natural language commands and real-time support.
Free
OpenGPT lets users build ChatGPTโbased applications instantly using a library of readyโmade AI tools for productivity, copywriting, coding, entertainment, and education. The platform offers promptโtoโcode conversion, regex creation, and tools that refine prompts and transform requests into actionabl
Free
Goblin Tools is a web and mobile suite of AI utilities that streamline task management, text formatting, emotional analysis, teaching resource creation, and recipe generation. It converts ideas into structured plans and offers multilingual translation for diverse users.
Free
LM Studio runs openโsource large language models locally on Mac (Mโseries), Windows, and Linux, enabling private, offline inference. It offers commandโline and headless deployment, serverโside API, SDKs, a model hub, and LMโฏLink for remote model access.
Free
OpenDevin is an open-source project replicating and enhancing Devin, an AI engineer for software tasks. It offers a sandboxing environment for code execution, integrating a chat interface and browser for user-friendly development. Aimed at simplifying software engineering, it welcomes contributions
Free
LanguageTool is an AI grammar, spelling, and style checker supporting 30+ languages. It offers realโtime browser extensions, desktop and Word addโins, advanced Picky Mode, paraphrasing, and an API for developer integration.
Free
OpenCreator is a generative AI workstation that integrates over 20 AI models for efficient content creation. With an intuitive interface, it enables quick visual production for various applications, including marketing and education, while simplifying the creative process.
Free trial
- $19/mo
Aider is an AI-powered pair programming tool that helps developers collaborate with LLMs for editing, refactoring, and debugging code within Git repositories. It supports multiple languages and integrates with IDEs and editors for real-time updates.
Free
Mevo is an openโsource platform that lets developers and data scientists host and customize their own instances on any OS or cloud. With GitHubโhosted code, full documentation, and modular architecture, it supports integrations and ensures data privacy and compliance.
Free
OpenPencil.dev is a lightweight, open-source desktop design editor that runs locally with full Figma file support. It offers scriptable workflows and an optional AI chat tool, prioritizing developer control and extensibility under the MIT license.
Free
Boxy is an AI coding assistant that enhances the coding experience, speeds up machine performance, provides useful features like code reviews, sandboxes and optimization, and helps bring ideas to code faster.
Free trial
- $9
Browser extension that analyzes news, tweets, and posts for bias, tone, and framing. Provides concise summaries, a trust score, political leanings, rhetoric breakdowns, and links to reputable references in real time.
Freemium
- $7.99/mo
Llama is a local AI tool that enables users to create customizable and efficient language models without relying on cloud-based platforms, available for download on MacOS, Windows, and Linux.
Free
AI Tools Directory offers a searchable catalog of 5,000+ AI tools organized by category and rating. Users can filter by application, bookmark selections, and access documentation or example projects, with regular updates to keep listings current.
Free
OpenDream is a webโbased AI art generator that turns text prompts into images using models such as Dreamlike, Stable Diffusion, and Deliberate. It offers templates for logos, anime characters, and 3D objects, enabling rapid highโresolution creations for commercial use.
Freemium