12 Best Open Source Zoho Alternatives
A curated collection of the 12 best open source and self-hosted alternatives to Zoho in 2026.
Looking for a free, privacy-friendly, or self-hosted replacement for Zoho in 2026? The top open-source alternative is Odoo — Open source ERP and CRM suite.
Other highly rated open-source Zoho alternatives include Tuta, ONLYOFFICE Docs and Warpdrive.
Open source ERP and CRM suite
Odoo is a comprehensive open-source suite of business applications designed to streamline operations across finance, sales, marketing, HR, and supply chain management. - Modular Design: Choose from over 30+ integrated apps (CRM, Accounting, Inventory, eCommerce, etc.) - Self-Hosting: Deploy on your own infrastructure or use Odoo's cloud platform - Customization: Build custom workflows with Odoo Studio or third-party apps - Industry-Specific Solutions: Pre-configured modules for retail, manufacturing, real estate, healthcare, and more - Integrated AI: Built-in artificial intelligence for automation and insights - Multi-Channel Support: POS, live chat, email marketing, and eCommerce tools - Global Compliance: Supports multiple currencies, languages, and tax regulations - Community & Enterprise: Free open-source version with optional paid support and features - Tech Stack: Python, PostgreSQL, JavaScript (Owl framework) - Self-Hosting: Fully self-hostable with Docker, Kubernetes, or traditional server setups - Deployment Options: On-premise, cloud (Odoo.sh), or third-party hosting - Database: PostgreSQL (primary), with support for MySQL and others - Scalability: Designed for small businesses to large enterprises
Privacy-first encrypted email, calendar & contacts
Tuta is a privacy-first email service that provides secure communication through end-to-end encryption, ensuring your data remains private and protected. Built with quantum-resistant encryption, Tuta offers a seamless experience for email, calendar, and contacts management without ads or tracking. - Quantum-resistant encryption for maximum data protection - End-to-end encrypted email with intuitive design for fast workflows - Zero-knowledge calendar that respects your privacy - Ad-free and tracking-free interface - Cross-platform support with apps for Android, iPhone, and web - Custom domain support for professional email addresses - Push notifications for calendar events on all devices - Open-source with transparent security practices Tuta is open-source and available as a self-hosted solution. The project is developed in TypeScript and can be deployed on your own infrastructure for full control over your data. Visit the GitHub repository for deployment instructions and technical details.
Secure online office suite compatible with MS Office
ONLYOFFICE is a secure online office suite designed for document editing, collaboration, and PDF management. Highly compatible with Microsoft Office formats, it offers a range of features for individuals and enterprises. - Document Editing & Collaboration: View, edit, and collaborate on documents, spreadsheets, and presentations in real-time with character- and paragraph-level co-editing modes. - PDF Management: Build and fill PDF forms, edit PDFs, convert documents to PDF, and extract text from scanned PDFs. - AI-Powered Tools: Generate documents, sheets, and slides using AI assistants. Translate, rewrite, check grammar, and extract text from scanned PDFs. Supports integration with local AI models. - Security & Compliance: Open-source code, compliance with international security standards, three levels of encryption (at rest, in transit, end-to-end), secure access, and extra document permissions. - Multi-Platform Integration: Connect ONLYOFFICE Docs to 40+ platforms like Box, Moodle, Nextcloud, and WordPress. Integrate into custom services or use desktop and mobile apps for offline editing. - Collaboration Features: Share documents for viewing, editing, reviewing, or filling forms. Compare and track changes, leave comments, and communicate via built-in chat or Telegram. ONLYOFFICE Docs is open-source and can be self-hosted. It supports integration with various platforms and offers a developer edition for custom integrations. The software is available for Windows, Linux, macOS, iOS, and Android. Learn more about ONLYOFFICE Docs features Learn more about ONLYOFFICE collaboration features Learn more about AI in ONLYOFFICE Learn more about ONLYOFFICE security features
Open-source self-hosted CRM alternative to Pipedrive
WarpDrive CRM is a self-hosted, open-source business development CRM designed to provide a privacy-focused alternative to Pipedrive. Built for sales teams, it offers robust pipeline management, contact organization, deal tracking, and automation features while ensuring full data ownership. - Self-hosted & Open Source: Deploy on your own infrastructure for complete data control and privacy. - Sales Pipeline Management: Visualize and manage sales pipelines with customizable stages and deal tracking. - Contact & Lead Management: Organize contacts, track interactions, and manage leads efficiently. - Automation & Workflows: Automate repetitive tasks and set up custom workflows to streamline sales processes. - Customizable Dashboards: Tailor dashboards to monitor key metrics and sales performance. - API & Integrations: Extensible API for integrating with other tools and services. - Multi-user Support: Collaborate with team members with role-based access control. - Data Export & Backup: Easily export data and set up automated backups for compliance and security. WarpDrive CRM is built with modern web technologies and can be self-hosted using Docker or Node.js. The project provides detailed documentation for deployment, including environment setup, database configuration, and scaling options. It supports PostgreSQL for data storage and includes scripts for easy installation and updates.
Open source CRM for modern teams
Twenty is the #1 open-source CRM designed for modern technical teams. It provides the building blocks to create a custom CRM that meets complex business requirements while adapting quickly to changing needs. - Modular Architecture: Build a CRM tailored to your specific workflows and requirements. - Scalable Infrastructure: Handles enterprise-level data and user loads efficiently. - Customizable Workflows: Create and automate business processes with visual workflow builders. - Real-time Collaboration: Shared dashboards, tasks, and notes for team coordination. - AI-Powered Insights: Leverage AI for predictive analytics and intelligent automation. - Open Source Core: Full transparency and control over your CRM infrastructure. - Self-Hosting Capability: Deploy on your own infrastructure for complete data ownership. - Integration Hub: Connect with existing tools and services via APIs and webhooks. Twenty is built with modern web technologies including React, TypeScript, and PostgreSQL. The platform supports self-hosting via Docker containers, Kubernetes, or direct deployment on cloud providers. Comprehensive documentation and community support are available for technical teams implementing the solution. For developers, the GitHub repository provides access to source code, issue tracking, and contribution guidelines. The project follows open-source best practices with regular updates and community-driven development.
Agentic CRM that automates pipeline management
Comp AI CRM is the first agentic CRM experience that automates traditional CRM tasks. Built for sales and customer success teams, it leverages durable research agents to read inboxes, enrich company and contact data, and create autonomous workflows. - Automated Record Enrichment: Agents automatically populate company domains, industries, logos, and last activity from inbox threads. - Agentic Workflows: Describe processes in plain language, and agents generate and execute workflows (e.g., re-enrich contacts, flag inactive deals). - Self-Scheduling Follow-Ups: Agents book and manage follow-ups based on customizable rules and timelines. - Real-Time Company Intelligence: Agents analyze company websites and historical interactions to provide context-rich insights. - Custom Agent Creation: Define tasks like "ping the owner when a deal hits Closed Won" and agents handle the rest. - Open-Source Core: Fully self-hostable with a permissive license for full data control. Comp AI CRM is built with Next.js and Vercel, designed for easy self-hosting. The project is open-source (MIT License) and available on GitHub. Setup requires minimal configuration, and the system scales with your team's needs.
Open-source CRM toolkit for personalized solutions
Atomic CRM is a fully open-source, code-driven CRM toolkit designed for developers and end users alike. Whether you need a simple contact manager or a complex sales pipeline, Atomic CRM provides the flexibility to build a CRM that matches your company's vision. - Contact Management: Organize and access all contacts in one place with detailed profiles and avatars. - Task & Reminder System: Create tasks, set reminders, and stay on top of your to-do list. - Deal Pipeline: Visualize and manage sales processes with a customizable Kanban board. - Note-Taking: Capture and store important details and insights with intuitive note-taking. - Data Import/Export: Seamlessly transfer data in and out of the system with simple tools. - Activity Tracking: Monitor all interactions, including emails, tasks, and deal updates. - Single-Sign On (SSO): Log in using enterprise accounts like Google, Azure, Keycloak, and Auth0. - Email to Note: Automatically capture and save email communications as notes. - API Integration: Effortlessly connect with other systems via Atomic CRM's API. - Mobile App: Access customer data on the go with offline capabilities. - MCP Server: Integrate with AI assistants for natural language queries and updates. - Internationalization: Supports multilingual UI and localized numbers/dates. - Customizable UI: Theme every visual detail and swap components to match your brand. - Strong Typing: Built with TypeScript for early error detection and maintainability. - Extensible Data Model: Modify the database schema to include domain-specific features. - AI Harness: Use specialized AI roles (developer, reviewer, tester) to tweak workflows without technical expertise. Atomic CRM is built on a modern tech stack: - Frontend: React, TypeScript, Shadcn UI, Tailwind CSS - Backend: Supabase, Postgres - Data Layer: TanStack Query - Deployment: Supports Supabase and GitHub Pages with one-liner commands. The CRM is fully open-source, allowing for complete customization and data ownership. Deploy it on your own infrastructure or use Supabase for a managed solution. Explore the AI Harness
CRM that builds itself from your email
Macro CRM transforms your email into a fully functional CRM system. By connecting to your inbox, it automatically extracts and organizes contacts, companies, enrichment data, and deal context—eliminating manual data entry and keeping records current. - Self-Building CRM: Automatically creates contacts and companies from incoming emails without any import or setup - Auto-Enrichment: Fills in firmographics, headcount, roles, and funding details in real-time - Full Email Context: Attaches all email threads, calls, notes, and tasks directly to contact records - AI Agent Maintenance: Continuously updates stale fields and flags at-risk deals before they slip - Shared Visibility: All records are team-visible by default, preventing information silos - Risk Detection: Agent surfaces stale accounts and drafts follow-up messages automatically - Integration-Free Setup: Works with your existing email workflow, no complex integrations required Macro CRM is a cloud-based SaaS solution with no self-hosting option available. The platform connects securely to your Gmail account via OAuth and processes data in real-time. All infrastructure is managed by Macro Inc. with SOC 2 compliance and enterprise-grade security standards.
Open source CRM built on Laravel
Krayin CRM is an open-source customer relationship management system built on the Laravel framework. Designed for businesses of all sizes, it provides a comprehensive suite of tools to manage leads, customers, sales pipelines, and marketing automation. - Lead & Customer Management: Track and manage leads, customers, and sales pipelines efficiently. - Industry-Specific Modules: Tailored solutions for B2B, B2C, automotive, event management, hospitality, banking, manufacturing, education, logistics, marketing, call centers, retail, insurance, and media industries. - AI-Powered Features: Includes AI agent tools, AI-powered CRM features, and AI-assisted installation for developers. - Marketing Automation: Automate marketing campaigns and customer engagement. - Sales Pipeline Optimization: Streamline sales processes with customizable pipelines. - Multi-Tenant SaaS Support: Enable super admins to provide CRM solutions to multiple tenants. - Integration Capabilities: Seamless integration with Google Workspace, WhatsApp, VoIP, and third-party apps. - Custom Solutions: End-to-end custom CRM development and migration services. - Extensions & Modules: Featured modules like CRM VoIP, Multi-Tenant CRM, Starter Pack, Purchase Order, and more. - White Label CRM: Launch branded CRM solutions without building from scratch. Krayin CRM is built on Laravel and can be self-hosted on your own infrastructure. It supports cloud hosting, custom development, and white-label solutions. The open-source version is available on GitHub, while additional services like support, maintenance, and custom development are offered through the official website.
Open-source HRMS with payroll & attendance
Horilla is an open-source HRMS designed to streamline HR operations for teams of all sizes. Whether self-hosted or cloud-based, it provides a unified solution for payroll, attendance tracking, leave management, recruitment, performance reviews, onboarding, asset tracking, and HR helpdesk. - Payroll Automation: Calculates overtime, deductions, and statutory filings from live attendance data, processing payroll for 200+ employees in under 5 minutes. - Attendance Management: Supports biometric, geo-fenced, and mobile check-ins with automated reconciliation into payroll. - Leave Management: Employees apply via mobile, managers approve in one tap, and balances update in real time. - Recruitment Pipeline: Full applicant tracking from job posting to offer, including interview scheduling. - Onboarding Automation: Pre-configured checklists, document collection, and access provisioning for new hires on day one. - Performance Tracking: Goals, OKRs, 360° reviews, and structured appraisal cycles. - Asset Tracking: Lifecycle management for laptops, devices, and equipment assigned to employees. - Employee Directory: Single source of truth for org charts, documents, and employee history. - HR Helpdesk: Built-in ticketing system for employee requests and HR resolutions. - Compliance Support: Automated statutory filings, audit trails, and policy management. Horilla is open-source and can be self-hosted for free. The cloud version is available from $7/user/month, with a 30-day free trial. The platform is designed for scalability, supporting teams across 28 countries with 99.98% cloud uptime. Documentation and support are available for both self-hosted and cloud deployments.
Free open-source desktop accounting software
Frappe Books is a free, open-source desktop accounting application designed for simplicity and efficiency. Built with a modern UI, it eliminates the complexity of traditional accounting software by offering features like fuzzy search for quick invoice creation and a powerful template builder for customizable invoices. - Desktop-first accounting: Runs locally on your computer with all data stored in a single SQLite database file. - Fuzzy search shortcut: Press Ctrl+K to quickly create invoices or navigate to any feature from anywhere in the app. - Customizable invoice templates: Build invoices from scratch using HTML or choose from pre-built templates. - Comprehensive reporting: Includes Profit & Loss, General Ledger, and Balance Sheet reports. - Offline functionality: No internet connection required to use the software. - Open-source license: Released under AGPL-3.0, ensuring transparency and community contributions. - No subscription fees: Completely free with no hidden costs or cloud dependencies. Frappe Books is a desktop application built with Electron and uses SQLite for data storage. The entire application is self-contained, making it easy to install and run on Windows, macOS, and Linux. No server or cloud infrastructure is required, ensuring full data ownership and privacy.
Open source CRM for full data control
SuiteCRM is the world's #1 open source CRM software solution that provides a comprehensive 360-degree view of customers and business operations. Built on open-source principles, it enables organizations to self-host on their own infrastructure for complete data control or use SuiteCRM Hosted for cloud-based deployment. - 360-Degree Customer View: Centralized repository for all customer data with powerful reporting and dashboards - Sales Automation: Tools for lead capture, opportunity management, and personalized quotations - Marketing Automation: Campaign management and customer engagement features - Service Management: Case tracking and resolution workflows - Customizable Data Model: Flexible structure to adapt to any business needs - Self-Hosting Capability: Deploy on your own servers for full data sovereignty - Open Source Foundation: No licensing fees or vendor lock-in - Enterprise Support: Professional services and support available through SuiteASSURED - Integration Ecosystem: Extensive add-ons and plugins including Outlook integration - Multi-Language Support: Available in numerous languages through community translations SuiteCRM is open-source software that can be self-hosted on any PHP/MySQL compatible server. The platform requires: - PHP 7.4+ (8.0+ recommended) - MySQL 5.7+ or MariaDB 10.2+ - Web server (Apache/Nginx recommended) - 2GB+ RAM recommended for production environments Self-hosted deployment provides complete control over data security and compliance. The software is GDPR compliant and offers EU data hosting options through official partners. Documentation and community support are available for all deployment scenarios.
About Zoho
Zoho is a unique and powerful cloud software suite designed to meet the end-to-end business needs of organizations of all sizes. From customer relationship management and marketing automation to accounting, HR, and project management, Zoho provides a cohesive ecosystem of applications that work seamlessly together.
Key Features of Zoho
- Integrated Business Suite: Over 50 applications covering sales, marketing, finance, HR, and operations
- Customizable Workflows: Tailor applications to fit specific business processes and requirements
- AI-Powered Tools: Includes Zia, an AI assistant for data analysis and automation
- Global Reach: Available in multiple languages with localized solutions for various regions
- Developer Platforms: Tools for building custom applications and integrations
- Security & Compliance: Enterprise-grade security with GDPR compliance and data protection
- Scalability: Solutions for small businesses to large enterprises
- Automation: Streamline repetitive tasks across different business functions
Tech / Self-Hosting
Zoho operates as a fully managed cloud service with no self-hosting options available. All applications are hosted on Zoho's secure cloud infrastructure with enterprise-grade reliability and uptime guarantees.