1 Open Source Alternatives to Zoho
A list of 1 carefully selected open-source alternatives to Zoho.

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 Zoho open-source alternatives — each with its own distinctive strengths and key features.
Tuta is an email service with a strong focus on security and privacy, offering encrypted email, contacts, and calendar features on all your devices. It combines robust, quantum-resistant encryption with an intuitive, ad-free user experience.

Key Features
- End-to-end encryption with quantum-resistant cryptography
- Zero-knowledge design ensuring absolute privacy
- Intuitive apps for web, Android, iOS, Windows, macOS, and Linux
- Fully open source clients for transparency and trust
- Renewable energy-powered infrastructure
- Custom domain support and multi-user options for businesses and families
Tuta delivers secure communication by encrypting your emails, calendars, and contacts using post-quantum cryptography. Its zero-knowledge architecture and user-friendly design simplify workflows across web, mobile, and desktop platforms. With support for custom domain integration and multi-user options, Tuta provides a reliable, sustainable platform powered entirely by renewable energy.
Price comparison of Zoho open-source alternatives
Tool | Tier 1 | Tier 2 | Tier 3 | Details |
---|---|---|---|---|
![]() | $0 Free | $3 Revolutionary | $8 Legend | 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 Zoho
Similar Alternatives

Zoho
Social The all-in-one social media management software. Campaigns Create, send, and track targeted email campaigns that drive sales.
10,001
Chennai, India