Dysgu Cymraeg is a suite of web apps for learning Welsh, built together with Jane. Each app focuses on one part of the language, and they're designed to be used on their own or alongside a course.
The suite currently includes six apps: a vocabulary trainer (Geirfa), a verb conjugation app (Berfau), a prepositions app (Arddodiaid), a reading practice app (Darllen), a mutations app (Treigladau), and an adjectives app (Ansoddeiriau). A couple of others are in progress alongside them, including a browsable natural-history app covering Welsh names for birds, mammals and plants.
All of the apps are free to use, and live together on one portal site.
If you'd like the link just send me an email - there are a number of caveats attached to the use of these tools.