POEditor - The translation and localization management platform that's easy to use *and* affordable!
Gorm - Gorm .po file editor
Phrase - A platform offering AI-powered translation tools for localization at scale.
Crowdin - Localize your product in a seamless way
Better PO Editor - Better PO Editor is an editor for .po files, used to generate compiled gettext .
Transifex - Transifex makes it easy to collect, translate and deliver digital content, web and mobile apps in multiple languages. Localization for agile teams.