3 Open Source Alternatives to Attio
A list of 3 carefully selected open-source alternatives to Attio.

The open-source alternatives are ranked based on our custom ranking system and score. This system takes into account various factors to determine the best alternatives.
If you’re looking for alternative features or workflows, here is a prepared detailed list of Attio open-source alternatives — each with its own distinctive strengths and key features.
Odoo is a comprehensive suite of open source business applications designed to streamline operations. It integrates modules such as accounting, CRM, inventory, HR, and more, helping companies optimize workflows and grow efficiently.

Key Features
- Comprehensive integration of diverse business functions
- Modular, customizable apps with over 40k community offerings
- Choice between free Community and premium Enterprise editions
- High-performance UI with smart AI and reduced data entry
- Transparent, all-inclusive pricing with no hidden costs
Leverage a fully integrated platform that unites every aspect of your business. Odoo brings together tools for accounting, CRM, project management, e-commerce, and manufacturing within one unified system. With over 40k community apps and the option between a free Community edition and a premium Enterprise edition, customization and scalability are at your fingertips. Enjoy a fast, efficient UI, reduced data entry, smart AI integration, and fair, all-inclusive pricing starting at US$24.90 per month.
Twenty is an open-source CRM providing a modern, community-powered alternative to traditional platforms like Salesforce. It empowers businesses with customizable workflows, robust APIs, and an intuitive interface, making customer relationship management accessible and flexible.

Key Features
- GPL-licensed open source software that you own
- Customizable objects and fields to tailor data models
- Powerful GraphQL and REST APIs for seamless integrations
- Built-in email integration and workflow management
- Active community support and an open roadmap
- Affordable Early Adopter pricing with priority support
Twenty is a fully open source CRM designed to manage customer data with a suite of tools including custom objects, integrated email synchronization, and advanced GraphQL and REST APIs. Backed by Y Combinator and a global developer community, the platform adapts to unique workflows and evolving business needs while offering both cloud and self-hosted options.
ERPNext is a free and open source enterprise resource planning solution that integrates all essential business functions into one platform. It offers a comprehensive suite of modules including accounting, sales, CRM, manufacturing, and more, making enterprise management straightforward and scalable.

Key Features
- 100% open source with no hidden features
- Comprehensive modules covering all business operations
- No-code/low-code customization and flexible workflows
- API-first design for seamless integrations
- Mobile-friendly interface and global compliance support
- Lower total cost with transparent, compute-based hosting pricing
ERPNext streamlines business operations by providing a modern, unified platform to manage accounting, procurement, inventory, manufacturing, projects, POS, HR, payroll, and additional processes. Its built-in no-code/low-code tools, mobile-friendly interface, and API-first design enable quick customization and seamless integration with existing systems while ensuring global compliance with multi-currency and multi-subsidiary support.
Price comparison of Attio open-source alternatives
Tool | Tier 1 | Details |
---|---|---|
![]() | $24.9 Enterprise Edition Pricing | Learn more |
![]() | $9 Early Adopter | Learn more |
![]() | - Frappe Cloud Hosting | Learn more |
* Pricing shown is based on publicly available information and may not reflect current rates. Visit each tool's website for detailed pricing information and additional tiers.
About Attio
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Attio
Founded in 2019, Attio is building a radically new type of CRM – built on real-time data, completely customizable and intuitively collaborative. Using Attio, businesses have the ability to create, build and deploy their CRM exactly as they want it.
2019
11
London, United Kingdom