Suppose I am working on a project. I publish this project on a website. I release it without a copyright notice OR a licence. But in the project title /description I say it is open source.My question:Under these circumstances is the project open sourced? If yes, under what conditions?
Can a project be open source even if you don't have a license?
unlicensed code
No.You can claim it's open source, but it wouldn't be true. If you don't declare under what agreement people can use the work, or what rights they have, they should legally assume they have no rights (i.e. it is entirely your copyright).The fact that you haven't included a copyright notice doesn't matter: a CN is a nicety which is in fact there to remind people of the fact that it belongs to you and you can't use it in any way not allowed by the license. The Lack of a CN doesn't remove your copyright.