Is there a Chromebook version of EclipseCrossword?

No, at this time, there is no version of EclipseCrossword for Chromebooks.

While there is no Chromebook version of EclipseCrossword, crosswords that you create on your Windows computer with EclipseCrossword and then share online can be played on a Chromebook just fine.

You may also have searched for: How can I use EclipseCrossword on my Chrome laptop?