xili-language ms (multisite) is specially targeted for professional webmasters with good knowledges of WordPress Network (3.1 and more).
On multisite WordPress, xili-language-ms plugin make easy editing and navigating between each site attached to a language. To complete with tags, use also xili-tidy-tags plugin. To include and set translation of .mo files use xili-dictionary plugin.
With experience acquired with xili-language, this plugin uses less than 2000 code lines (and comments) and very few ‘hooks’ and API.
Today the plugin is not free and is bundled in an attractive xili-language Premium Services Offer.
Both plugins are totally compatible with the architecture of WP : no table added, no modification of the core motor.
Comparison xl vs xlms