Crowdin vs Localize

Crowdin is a localization management platform founded in Ukraine in 2009 and now headquartered in Estonia. It is used by software companies, game studios and a long list of well-known open-source projects to translate apps, websites, documentation and help centers, and it offers both a standard cloud product and Crowdin Enterprise for larger organizations.

The platform supports more than a hundred file formats and syncs source strings automatically from GitHub, GitLab, Bitbucket and CI pipelines, from design tools like Figma, and from CMSs and help desks through a marketplace of over 600 apps. Translators work in an editor with translation memory, glossaries, screenshots, in-context preview, QA checks and machine translation from engines such as DeepL and Google, plus AI translation with your own prompts. Crowdsourcing features let volunteers suggest and vote on translations. Pricing combines hosted words and seats, and Crowdin is free for qualifying open-source projects.

Crowdin suits teams with many file types, many integrations or a community that wants to help translate. Its interface can feel dense, and hosted word limits need watching as content grows. Lokalise is the main commercial rival with a cleaner UI for product teams, Phrase is strong in enterprise and agency workflows, and open-source alternatives such as Weblate and Tolgee can be self-hosted. For website-only translation without code, Weglot is simpler.

Localize is a translation management platform from Localize Corporation, a San Francisco company backed by Techstars. Instead of exporting strings into files, you add its JavaScript library to a website or web app; Localize detects text automatically, including dynamic content rendered by React and other frameworks, routes it through translation and review, and publishes it back in real time.

Translations start with an AI first pass from large language models, and human reviewers then edit in context on the actual page. Teams get glossaries, translation memory, approval workflows, role-based permissions, audit logs and multilingual SEO settings. Integrations cover WordPress, Webflow, Drupal, Contentful, Zendesk help centers and ReadMe docs, plus libraries for React, Python and Django. Pricing is no longer published: plans are quoted on content volume, pageviews, languages and workflow needs, after a 14-day free trial without a card.

Localize fits SaaS companies localizing a marketing site, logged-in web app and help center together without asking engineers to maintain resource files. It is less suited to native mobile apps managed through string files. Weglot is simpler and publicly priced for marketing sites, Lokalise is stronger for developer file-based workflows, and Smartling targets large enterprises with managed translation services.

Buying tip: because prices are quoted, collect monthly pageviews, target languages and estimated word count before the sales call, and ask how AI translation volume and human review are billed.