If you're looking for a translation management system that fits into your development workflow, Lokalise is a good choice. Lokalise is a continuous localization and translation management platform that integrates with GitHub, Bitbucket and Jira. It offers AI-powered translations, quality assurance tools and customizable translation status, making it a good fit for developers, managers and translators.
Another good option is Transifex, which offers a more complete translation and localization service. Transifex integrates with Figma, Jira and Contentful, for example, and offers AI-powered human-quality translations, automated workflows and real-time publishing through APIs and CLI. It's geared for developers and managers who want a streamlined process for ingesting content, translating it and publishing it.
If you want a very automated and collaborative translation process, check out Crowdin. Crowdin has more than 600 apps and integrations and offers AI-powered localization management. It's got strong security and a variety of collaboration tools, so it's good for agile teams that need to localize and automate localization.