11 Best Open Source Perplexity Alternatives
A curated collection of the 11 best open source and self-hosted alternatives to Perplexity in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Perplexity in 2026? The top open-source alternative is Open WebUI — Self-hosted AI platform for complete control.
Other highly rated open-source Perplexity alternatives include AnythingLLM, LibreChat and Khoj.
Self-hosted AI platform for complete control
Open WebUI is a self-hosted AI platform designed for complete data sovereignty and flexibility. Whether you're running models locally, in the cloud, or in air-gapped environments, Open WebUI provides the tools to connect, extend, and protect your AI workflows without compromise. - Model Agnostic: Connect to any AI model—local or cloud-based—including Ollama, OpenAI, Anthropic, and compatible alternatives. - Full Customization: Extend functionality with Python-based tools, functions, and plugins. Build and share custom workflows with the community. - Enterprise-Grade Security: Deploy with SSO, RBAC, audit logs, and data residency controls. Ideal for regulated industries and air-gapped environments. - Community Library: Access 381M+ downloads of prompts, models, tools, and functions shared by 484K+ community members. - Scalable Deployment: Run on your own hardware, scale from startups to global enterprises, and maintain complete control over data and infrastructure. - Built-in Tools: Voice, vision, retrieval, generation, and search capabilities out of the box. No additional setup required. - Open Source: Self-hosted under permissive licenses, ensuring transparency and long-term ownership. - Developer-Friendly: Integrate seamlessly with existing workflows using Docker, pip, or direct deployment. Open WebUI is designed for self-hosting and can be deployed on any infrastructure—local machines, cloud servers, or on-premises environments. The platform supports Docker for easy installation and provides comprehensive documentation for advanced configurations, including air-gapped deployments and enterprise-grade security setups. No proprietary dependencies or vendor lock-in ensures full data portability and control.
Private AI assistant running entirely on your device
A private AI assistant that runs entirely on your computer. No accounts, no API keys, no token limits. - On-device AI: Runs entirely locally with no cloud processing or data leaving your device - Document Knowledge: Every document becomes part of your agent's knowledge base - Meeting Assistant: Automatically transcribes and summarizes meetings with action items and key decisions - Background Jobs: Automate recurring tasks and workflows - Dynamic Model Selection: Choose or auto-select the best model for your hardware - Web Scraping & Search: Access real-time information from the web - Custom Agent Skills: Build and deploy custom AI capabilities - Magic Features: Includes intelligent dictation, real-time text refinement, and context-aware autocomplete - Cross-platform: Available for macOS, Windows, and Linux - Easy Setup: One-file installation with no dependencies - Docker Support: Available for containerized deployment - Open Source: Full source code available on GitHub - Self-hosted Options: Cloud and mobile versions available for team collaboration
Open-source unified AI conversation platform
LibreChat is an open-source platform that unifies all your AI conversations in one customizable interface. Designed for developers and enterprises, it offers advanced features like persistent memory, code interpreter, MCP support, and enterprise-grade authentication. - Unified AI Interface: Consolidate conversations from multiple AI models in a single dashboard - Advanced Agents: Deploy agents with file handling, code interpretation, and API actions - Code Interpreter: Execute code in multiple languages securely with zero setup - Multi-Model Support: Connect to Anthropic, AWS, OpenAI, Azure, and other AI providers - Artifacts Creation: Generate React, HTML, and Mermaid diagrams directly in chat - Persistent Memory: Maintain context across conversations for personalized interactions - Web Search Integration: Provide live internet access to any model with built-in search - Enterprise Authentication: SSO with OAuth, SAML, LDAP, and two-factor authentication - Model Context Protocol (MCP): Connect to external tools and services seamlessly - Self-Hosting: Full control with Docker, Kubernetes, and remote deployment options LibreChat is fully open-source and can be self-hosted using Docker, Kubernetes, or remote installation methods. The platform supports various AI providers and offers comprehensive documentation for local and remote deployments. With 42.6k+ GitHub stars and 50M+ Docker pulls, it's a widely adopted solution for AI-powered conversations.
Self-hostable AI assistant that connects to your docs and the web, lets you build agents, schedule automations, and run research with verifiable citations.
Self-hostable AI assistant that connects to your docs and the web, lets you build agents, schedule automations, and run research with verifiable citations.
AI agents that learn continuously and improve over time
Letta is an AI research lab in San Francisco focused on building machines that learn. Their vision is a future where humans coexist with digital people: experiential agents that remember everything, learn continuously, and improve themselves over time. - Stateful AI Agents: Create agents with persistent memory that evolves through experience - Memory-Native Learning: Agents learn through specialized memory models trained with memory-native reinforcement learning - Git-Based Memory: Programmatic context management with git-based versioning for agent memory - Offline Learning: Sleep-time compute allows agents to reason and learn during idle periods - Self-Improving Capabilities: Agents continuously refine their identity, memory, and capabilities based on interactions - Research-Backed: Built on foundational work like MemGPT (LLM Operating System) from UC Berkeley's Sky Computing Lab Letta's research ships as software through the Letta Agent, available as a npm package (@letta-ai/letta-code). The technology is designed for enterprise and research applications, with case studies from companies like Bilt, 11x, Kognitos, and Hunt Club. The team consists of researchers and engineers from UC Berkeley's Sky Computing Lab, advised by industry leaders including Ion Stoica and Joey Gonzalez.
Open-source NotebookLM alternative for live web research
SurfSense is an open-source alternative to NotebookLM designed for live web research. It enables users and AI agents to pull real-time data from platforms like Reddit, YouTube, Instagram, TikTok, Indeed, Google Maps, and Google Search through a unified platform, API, or MCP server. - Live Web Research: Agent-based crawling of live sources to synthesize cited answers, avoiding stale indexes. - Multi-Platform Connectors: 10+ connectors (Reddit, YouTube, Instagram, TikTok, Google Maps, etc.) providing platform-native REST APIs for structured data extraction. - API & MCP Server Access: Integrate with your own apps or AI agents using SurfSense's API or MCP server for live data feeds. - Automations & Artifacts: Generate podcasts, videos, and other artifacts from research data. - Desktop App: Native Linux application for offline research workflows. - Deep Research Capabilities: Supports competitive intelligence, academic literature scans, financial research, and AI overview tracking. SurfSense is open-source and can be self-hosted. The project provides a desktop app (AppImage) and supports integration via API or MCP server. The connectors are designed to bypass official API rate limits and quotas, offering a scalable solution for real-time data extraction.
AI search engine that reads deeply and cites sources
Scira is an AI search engine designed to deliver comprehensive, well-sourced answers to complex queries. Unlike traditional search engines, Scira reads deeply into documents, articles, and databases to provide nuanced responses with proper citations. - Deep Reading AI: Analyzes documents and sources thoroughly to extract detailed insights. - Source Citation: Every answer includes citations, ensuring transparency and credibility. - App Integration: Works within the tools you already use, enhancing productivity. - Command Palette: Quick access to search commands for efficient navigation. - Multi-Source Research: Combines results from Reddit, research papers, videos, and more. - Fact Checking: Built-in verification to ensure accuracy of responses. - Customizable Workflows: Tailor search parameters to fit specific research needs. Scira is an open-source project hosted on GitHub. While the primary service is cloud-based, users can explore the repository for potential self-hosting options or integrations with existing workflows.
Open-source answer engine that dynamically generates UI components while providing AI-powered responses, combining conversational AI with interactive interfaces.
Open-source answer engine that dynamically generates UI components while providing AI-powered responses, combining conversational AI with interactive interfaces.
Chat with private local LLMs offline
Fullmoon is a lightweight app designed to bring the power of large language models to your Apple devices. Whether you're using an iPhone, iPad, Mac, or Vision Pro, Fullmoon provides a seamless way to interact with LLMs without compromising your privacy. - Private & Local: Runs models entirely on-device with no cloud dependency, ensuring your data never leaves your device. - Offline Capability: Works fully offline when internet is unavailable, perfect for travel or areas with poor connectivity. - Apple Silicon Optimized: Leverages Metal 3 and Swift MLX for maximum performance on Apple hardware. - Model Variety: Supports multiple quantized models including Llama 3.2 (1B/3B) and DeepSeek R1 variants. - Customization: Personalize themes, fonts, and system prompts to tailor the experience to your preferences. - Shortcuts Integration: Use local models with Apple Shortcuts for automation and workflow integration. - TestFlight Access: Get early access to new features and models through TestFlight. Fullmoon is currently available as an iOS/iPadOS/macOS app with no self-hosting option. The app is open source (GitHub repository) and runs exclusively on Apple devices with Apple Silicon processors. Models are quantized for efficient on-device inference.
Privacy-first AI assistant from Proton
Lumo is a privacy-first AI assistant developed by Proton, designed to help you stay productive while ensuring your data remains secure and private. - Privacy-First AI: Built with Proton’s zero-access encryption and no-logs policy to protect your data. - Multi-Platform Support: Available as a web app, iOS, and Android application. - Personal & Business Plans: Tailored solutions for individuals and teams with enterprise-grade security. - AI-Powered Productivity: Features include chat assistance, image generation, and personalized AI experiences. - GDPR & HIPAA Compliant: Meets strict privacy regulations for professional and healthcare use. - Proton Ecosystem Integration: Seamlessly connects with Proton Mail, Drive, Calendar, and other Proton services. Lumo is developed by Proton and operates as a cloud-based service with no self-hosting option. The application is available through Proton’s infrastructure, ensuring high availability and security. For businesses, Proton provides dedicated support and compliance certifications (ISO 27001, GDPR).
Modern media center for streaming movies and TV shows
Stremio is a modern media center designed for seamless streaming of movies, TV shows, web channels, sports, and podcasts. With an intuitive interface and cross-device sync, it provides a unified entertainment experience. - Cross-Platform Support: Available on Windows, macOS, Linux, Android, Android TV, and web. - Addon System: Extend functionality with community-built addons for additional content sources. - Cross-Device Sync: Track your progress across all devices with a single account. - 4K HDR Support: Enjoy high-quality streaming with support for 4K and HDR content. - Privacy-Focused: Open-source software with minimal data collection and optional guest mode. - Torrent & Magnet Links: Play torrent files and magnet links directly. - Chromecast Support: Cast content from desktop or mobile to your TV. - Offline Caching: Cache videos for later viewing without an internet connection. Stremio is open-source with its desktop app available on GitHub. The platform prioritizes user privacy and security through transparent code audits and a secure addon system. While Stremio itself is not self-hosted, its open-source nature allows for community-driven extensions and integrations.
About Perplexity
Perplexity is a free AI-powered answer engine that provides accurate, trusted, and real-time answers to any question. It leverages advanced AI models to search, analyze, and synthesize information from multiple sources, delivering concise and reliable responses.
Key Features of Perplexity
- Real-time Answers: Provides up-to-date information by aggregating data from trusted sources.
- AI-Powered Search: Uses large language models to understand and answer complex queries.
- Source Attribution: Cites references for transparency and credibility.
- Computer Mode: Enables task automation and project completion with AI assistance.
- Artifacts Generation: Creates polished deliverables for projects.
- Customizable Connectors: Integrates with external tools and APIs for enhanced functionality.
- Project Management: Organizes searches and tasks into structured projects.
- Session History: Tracks and revisits past queries and interactions.
Tech / Self-Hosting Info
Perplexity is a cloud-based service and does not offer self-hosting options. It relies on proprietary AI models and infrastructure.