Apertium

Apertium is a free, open-source machine translation platform designed to enable developers to build and deploy translation engines. It emphasizes openness and collaboration, providing a framework for creating multilingual MT systems across various language pairs. The project is maintained by a community of contributors and supports customization through APIs and SDKs.

• Free/open-source platform for machine translation
• Modular architecture for building MT engines
• Supports multiple language pairs and customizable pipelines
• APIs & SDKs for integration
• Community-driven development and extensibility

• No vendor lock-in and cost-free use
• Transparent, open collaboration and the ability to host on-premise for privacy
• Open-source contributions and active community support
• Flexible integration options via APIs/SDKs

• Free and open-source; no paid tiers or licensing required