Argos Translate vs Localizely

Argos Translate is a free, open-source Python translation library designed for offline use. It uses OpenNMT and can run as a Python library, command-line tool or GUI application. Language models are installed as .argosmodel archives, and the requested language pair must be installed before translation. Listed languages include Arabic, Chinese, English, French, Hindi, Japanese and Spanish, among others. When a direct pair is unavailable, Argos can route translation through an installed intermediate language, though this may reduce translation quality. Users can train and package custom language models. The maker describes LibreTranslate as an API and web application built on Argos Translate. A linked tool translates .txt, .odt, .odp, .docx, .pptx, .epub and .html files. The project is dual licensed under MIT or Creative Commons CC0. Argos Translate provides API access, supports Linux self-hosting and is associated with a community forum and machine-translation support or consulting services.

Localizely is a translation management system for mobile app, game, and website content. It combines AI and machine translation with professional translation orders, translation memory, glossaries, quality checks, screenshots, tasks, reports, and branching. Supported file types include Flutter ARB, Android XML, Apple strings, JSON, YAML, PO, XLIFF,.NET RESX, CSV, Excel, and TMX. Integrations include GitHub, GitLab, Bitbucket, Figma, AWS S3, an API, and a CLI. GitHub sync can retrieve localization files manually or through a webhook and return translations as a pull request. Its Flutter SDK can send translation updates over the air and provides in-context editing. Localizely is SaaS only, with no self-hosted option. The free plan includes one project and 250 hosted string keys. Starter is $16 a month when billed annually, or $19 per month when billed monthly; a 15-day trial is listed. The CLI runs on Linux, macOS, and Windows, and is also offered as a Docker image.