Resources for Welsh
- Gwirydd gramadeg rhydd i'r Gymraeg / Grammar checker (based on An Gramadóir)
- Geiriadur rhydd i'r Gymraeg / Welsh dictionary
- Rhedeg berfau Cymraeg / Verb conjugator
- Apertium — has a GPL morphological analyser for Welsh as part of the Welsh—English language pair data (which also includes a Constraint Grammar disambiguator and Welsh—English translational dictionary)
- OPUS Welsh — many languages.
- BangorTalk Welsh—Spanish, Welsh—English conversational corpora, GPL, speakers tagged with "social variables"
- UAGT-PNAW Welsh—English. 510,813 bilingual aligned sentence pairs.