Locize

Locize is a continuous localization management platform built by the creators of i18next, the most widely adopted internationalization framework in the JavaScript ecosystem with over 5 million weekly npm downloads. Headquartered in Switzerland and operated by inweso GmbH, the platform connects source code repositories to translator workflows and delivers translation updates via CDN without requiring application redeployment. Core capabilities include automatic key synchronization that detects new translation strings from code commits, a dedicated translation interface with AI-assisted computer-aided translation, in-context editing that shows translations rendered in the live application, glossary management for terminology consistency, and version control with full audit trails for engineering managers and product teams. The platform supports 150-plus languages with per-customer translation overrides for multi-tenant applications, 30 concurrent version branches for feature-flagged rollouts, and webhook-driven delivery to CI pipelines. An MCP server enables AI assistants including Claude, Cursor, and VS Code Copilot to interact with translation projects programmatically. File format support covers XLIFF, Gettext PO, Android strings XML, NET RESX, Mozilla Fluent, JSON, YAML, and PHP arrays. Customers include Zurcher Kantonalbank, the Swiss Red Cross, and ABB. A free tier supports projects up to 1,000 translation keys with no credit card required, and flat-rate monthly pricing starts at 50 Swiss francs.