POEditor offers free software translation and localization services as follows:
Anyone who registers to POEditor gets an account with a Free plan on it by default. The free account can accomodate software localization projects summing up to 1000 strings, and can be used to contribute to projects owned by other users without any limitation.
A mobile app localization project or other small or medium software projects can usually be translated into a few languages using up to 1000 strings.
Free Open Source Project Localization
Open source software can be localized for free at POEditor, without any string limitation. To localize open source software for free, a user needs to file an OS project request from the localization project's Settings.