Latest free open-source software collection:

Orama

Key features Full-text and vector search engine purpose-built for JavaScript environments Lightweight, dependency-free footprint suitable for performance-sensitive use cases Runs on the edge, in the browser, on Node.js, and in any JavaScript runtime Written in TypeScript with a JavaScript-friendly API Open-source under the Apache-2.0 license Platforms: Windows, macOS, Linux. Links Official website Source code Pricing: Free. Orama is fully free and open-source under the Apache-2.0 license, with no paid tier required for core functionality.

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OpenClaw

Key features Positions itself as an agentic AI assistant focused on taking action, not just responding to queries. Designed as an open-source alternative in the AI assistant space. Aims to function as a chatbot that can execute tasks rather than only answering questions. Cross-platform availability across Windows, macOS, and Linux desktop environments. Platforms: Windows, macOS, Linux. Pricing: Free.

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Open WebUI

Key features Self-hosted AI chat interface that you can run on your own hardware, keeping conversations and data under your control. Works with both local models (for example via Ollama) and remote LLM providers from a single web UI. Extensible, community-driven project designed to be customized and adapted to different workflows. Multi-model support, letting you switch between different language models without leaving the app. Browser-based chat experience that requires no client installation beyond a modern web browser. Platforms: Windows, macOS, Linux. Links Official website Source code Pricing: Fully free and open source under the MIT license; self-hostable Docker image with no paid tier.

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Lightpanda

Key features Open-source browser engineered specifically for AI agents, automation, and web scraping tasks Lightweight architecture designed to consume far fewer resources than full browsers such as Chrome Headless browsing capabilities tailored for programmatic and automated workflows Built with a focus on speed and minimal overhead for server-side and agent-driven use cases Self-hosted deployment model that gives users full control over their automation environment Platforms: Linux, macOS Links Official website Source code Pricing Free and open-source under the MIT license; self-hosted browser for automation.

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Khoj

Key features Search across personal notes, documents, and the web from a single chat interface Automates tasks and acts as a personal research assistant Self-hosted design that keeps your data on your own infrastructure Functions as an AI "second brain" for organizing and retrieving knowledge Open-source codebase licensed under AGPL-3.0 Platforms: Windows, macOS, Linux Links Official website Source code Pricing: Freemium. A free, self-hostable open-source release under AGPL-3.0 is available, and a hosted cloud version with usage limits is also offered.

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Inbox Zero

Key features AI-powered email assistant for drafting and automating replies Automated inbox organization to surface what needs attention Tools and workflows designed to help users reach inbox zero Open-source codebase available for self-hosting and customization Web-based access with no local install required for the hosted version Platforms: Web Links Official website Source code Pricing: Freemium. An open-source, self-hostable version is available under the AGPL-3.0 license.

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Fullmoon

Key features Native macOS and iOS application built specifically for Apple platforms. Chat interface designed for interacting with large language models. Runs conversations locally on-device, keeping data private. Focused on privacy by avoiding cloud-based processing. Tailored experience on both Mac and iPhone/iPad. Platforms: macOS, iOS Links Official website Pricing: Free to download; closed-source proprietary app.

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FastGPT

Key features Open-source platform for building AI-powered knowledge bases and question-answering systems Uses Retrieval-Augmented Generation (RAG) to combine large language models with custom data sources Supports knowledge ingestion, indexing, and natural-language querying Vector search capabilities for retrieving relevant context from documents Chatbot workflow tools for creating conversational AI agents Flexible integration with various LLM providers Platforms: Linux, macOS, Windows Links Official Website Source Code Pricing: Free — self-hosted, free and open-source under the MIT license.

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Cherry Studio

Key features Multi-model AI desktop client supporting many LLM providers from a single interface Local-first, privacy-focused design for handling AI conversations Ability to chat with and compare models side by side Open-source codebase released under the AGPL-3.0 license Cross-platform desktop application for Windows, macOS, and Linux Platforms: Windows, macOS, Linux Links Official Website Source Code Pricing: Fully free and open source under the AGPL-3.0 license.

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Browser Use

Key features Enables AI agents to autonomously control and automate any web browser Supports LLM-driven browser tasks including navigation, form filling, and web scraping Provides a scalable framework for orchestrating complex browser interactions Built on Playwright for reliable cross-browser automation Distributed as a Python library for easy integration into AI workflows Open-source under the MIT license, allowing flexible self-hosting and customization Platforms: Windows, macOS, Linux Links Official Website Source Code Pricing Free and open-source under the MIT license; self-hosted Python library for AI browser automation.

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AnythingLLM

Key features Chat with your own documents using retrieval-augmented generation (RAG) and any supported LLM Desktop application with a single, unified interface for chatting, embedding, and managing vector storage Full support for local models, enabling fully offline and private use Works with a wide range of LLM providers, letting you swap models without changing your workflow Open source under the MIT license, giving you transparency and control over your data Platforms: Windows, macOS, Linux Links Official website Source code Pricing Fully free and open source under the MIT license, with optional paid cloud hosting tiers.

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5ire

Key features Cross-platform desktop AI assistant compatible with local and cloud-based large language models Built-in knowledge base support for grounded, context-aware responses Designed for offline, private AI usage on personal devices Available as a free open-source application under the MIT license Platforms: Windows, macOS, Linux Links Official website Source code Pricing: Free open-source desktop app released under the MIT license.

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OpenLLMetry

Key features Open-source observability tool designed specifically for LLM applications. Provides tracing, metrics, and performance monitoring to help debug and optimize AI workflows. Self-hosted LLM observability with full telemetry capabilities. Licensed under Apache-2.0, enabling free use and modification. Platforms: Windows, macOS, Linux Links Official website: https://www.traceloop.com/openllmetry Source code: https://github.com/openllmetry/openllmetry Pricing: Free. OpenLLMetry is free and open-source under the Apache-2.0 license, offering self-hosted LLM observability with tracing and monitoring capabilities.

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OpenLIT

Key features Open-source observability platform purpose-built for LLM applications. Combines monitoring, debugging, and analytics in one integrated tool. Native OpenTelemetry support for standardized telemetry collection. Self-hosted deployment with no usage limits. Licensed under Apache-2.0, so it's free to use and extend. A free, open-source alternative to commercial tools like LangSmith. Platforms Linux, macOS, Windows. Links Official website: https://openlit.ai Source code: https://github.com/openlit/openlit Pricing Free and open-source under Apache-2.0, self-hosted with no usage limits.

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Open-Notebook

Key features Free and open-source AI-powered research notebook. Privacy-first: runs locally on your own machine. Chat with PDFs, documents, and notes to gather insights. Bring your preferred LLM provider: Ollama, OpenAI-compatible APIs, or other providers. Self-host locally for full control over your data. Platforms: Windows, macOS, Linux Links Official website: https://open-notebook.vercel.app Source code: https://github.com/SiddharthMaheshwari/Open-Notebook Pricing: Free — completely free and open-source; self-host locally and connect to Ollama, OpenAI-compatible APIs, or other providers.

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Ollama

Key features Run open-source large language models locally on your own machine. Provides a simple API and CLI for interacting with models. Offers a private and free alternative to cloud-based LLM services. Supported on Windows, macOS, and Linux. Platforms: Windows, macOS, Linux Links Official website: https://ollama.com Source code: https://github.com/ollama/ollama Pricing Free. Fully free and open-source under the MIT license; download and run any supported open-source LLM locally without restrictions.

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LocalAI

Key features Self-hosted AI runtime covering text, voice, vision, and agent capabilities. OpenAI-compatible API, making it a practical free alternative to the OpenAI API. Runs LLMs and other AI models locally, keeping data on your own hardware and off external services. Works across Windows, macOS, Linux, and Raspberry Pi OS. Fully open source under the MIT license — no usage limits or API fees. Platforms: Windows, macOS, Linux, Raspberry Pi OS Links Official website: https://localai.io Source code: https://github.com/mudler/LocalAI Pricing Free. Completely free and open source under the MIT license; self-host all AI features without usage limits or API fees.

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llama.cpp

llama.cpp is a free, open-source alternative to OpenAI . Key features Lightweight C++ implementation for running large language models locally. Supports a wide range of hardware backends. Quantized inference for efficient performance. Platforms: Windows, macOS, Linux Links Official website Source code Pricing: Free — fully open-source under the MIT license, free to use, modify, and distribute.

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Latitude

Key features End-to-end tracing for LLM applications and AI agents in production. Monitoring and analytics tools built specifically for LLM observability. Self-hosted, open-source platform with full control over your data. Designed for AI-agent workloads, covering request-level visibility and debugging. Platforms: Linux, macOS, Windows. Links Official Website Source Code Pricing: Free. Open-source self-hosted observability for AI agents, including full tracing and analytics.

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LangWatch

Key features Simulation-based testing for AI agents and LLM applications. Evaluation tools for LLM applications. Observability for AI agents and LLM applications. Open-source platform licensed under Apache-2.0. Self-hostable via Docker. Platforms: Linux, macOS, Windows Links Official website: langwatch.ai Source code: github.com/langwatch/langwatch Pricing: Free and open-source under Apache-2.0, with self-hosting via Docker.

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Find free open source alternatives of following paid software:

Headless Browser Automation

Headless browser automation tools programmatically control web browsers without a visible UI for testing and scraping.

Notion AI

Notion AI adds AI-powered writing, summarization, and brainstorming features inside the Notion workspace.

Email Management

Email Management refers to software and tools for organizing, filtering, and streamlining email workflows.

AI Knowledge Base / RAG

AI Knowledge Bases build, index, and query private document collections using retrieval-augmented generation to power context-aware AI answers.

AI Browser Automation

AI browser automation uses artificial intelligence to control web browsers and perform tasks automatically.

LLM Evaluation & Observability

LLM Evaluation & Observability is a tool for evaluating and tracking AI model behavior.

Observability

Observability is a set of tools for monitoring and diagnosing system health via telemetry.

GPU Orchestration

GPU Orchestration is a platform for managing, scheduling, and allocating GPU resources across clusters.

Data Notebooks

Data notebooks are interactive documents for analysts to run code and visualize data.

Prompt Library

Customer Support

Customer Support is a helpdesk platform for managing customer inquiries and support tickets.

Real-time Communication

Real-time Communication is a service for live messaging, voice, and video.

Workflow Automation

Workflow automation is a tool that connects apps and automates repetitive tasks.

LLM Observability

LLM observability provides monitoring, tracing, and evaluation for LLM apps.

LLMOps

LLMOps is a platform for managing and monitoring large language models in production.

AI Copilot Builder

AI Copilot Builder is a platform for creating and managing AI copilots.

Maltego

Maltego is a graphical tool for link analysis and data mining used in OSINT investigations.

AI Coding Assistant Optimization

AI Coding Assistant Optimization fine-tunes AI coding assistants for better suggestions.

LangSmith

LangSmith is a platform for debugging, testing, evaluating, and monitoring LLM applications.

AI Developer Tools

AI Developer Tools is a suite for building, testing, and deploying AI applications.