BabelNet - Multilingual resource that covers hundreds of languages and, according to need, can be used as either an encyclopedic dictionary, or a semantic network, or a huge knowledge base. LibreLingo - Experiment to create a community driven language-learning platform. Toucan - Teaches you new skills while you browse the web. Fluent - Learn languages by browsing the web. CopyTranslator - Foreign language reading and translation assistant based on copy and translate.