The Welsh Language Commissioner has published an advice note which offers guidelines for providing high quality bilingual software and IT services:
An online version of this document can be reached by following this link:
Technology, Websites and Software: Welsh Language Considerations
A PDF version is also available or email
email@example.com for a hard copy.
Microsoft Welsh Language Interface Packs
Microsoft’s Welsh language interfaces can be downloaded for free:
Please note that it isn't necessary to download a seperate Welsh interface pack for Windows 10. Microsoft's instructions for adding languages can be found here: How to add an input language to your PC - Microsoft Windows. Your language preference should update automatically if you have already downloaded the Welsh interface pack for Windows 8.
Some other Welsh interfaces:
How to use Welsh language technology?
Watch these videos to see how you can use more Welsh in technology and how to create more online content
Spelling and grammar checker – Cysgliad Software Pack
The Cysgliad software pack contains:
- Cysill: spelling and grammar checker
- Cysgeir: collection of dictionaries
Cysgliad for the PC and Mac (free for Mac only) is available from
A free online version of Cysill is also available from
Language technology resources
The Language Technologies Portal consists of a number of Welsh language technology resources to facilitate the use of Welsh in IT projects: Welsh National Language Technologies Portal
Text to speech voices have been developed by Ivona https://www.ivona.com/us/about-us/voice-portfolio/ and Bangor University Canolfan Bedwyr Language Technologies Unit.
Welsh apps and games
There are a number of Welsh language apps and games available, including some developed with funding by Welsh Government and S4C. More information can be found on the S4C Digital website and a useful list can be found on the Welsh Government’s website Welsh apps.