Here are only some links (there is a lot of other ones):

https://www.masterstudies.com/Masters-Degree/Computer-Science/USA/Distance-learning/

https://www.distancelearningportal.com/study-options-c/masters/269779225/computer-sciences-united-states.html

But I rather suggest an other way to find them: see some good and well known universities' websites and, by surfing, search about distance/on line courses (e-learning) in your area.

Good luck for your studies.

Thanks 😊

This will not be easy. The countries that still have tuition-free education are few and mostly found in Europe, you can see them here https://www.study.eu/article/study-in-europe-for-free-or-low-tuition-fees . If you come from a non-EU/EEA-country there often are fees, but sometimes lower, in these countries. For participation, you also have to qualify for a student visa for that country as a non-EU/EEA citizen, which involves showing that you have funds enough also for supporting yourself for living costs. In the category of non-tuition master programmes, there are almost no "distance educations" where you can remain in your home country. For master education, however, you can look for "Erasmus Mundus" university cooperations and master programmes. They often have, as part of the concept, some student places with a grant, enabling students from third countries to study,

For PhD candidate education, there are sometimes, as in Sweden, PhD student positions that you apply for, and if accepted, you have both tuition-free education and a monthly salary and a student visa for 4 years. it is like this in some other countries as well, as in other Nordic countries, Germany, Switzerland and Belgium. See this RG discussion https://www.researchgate.net/post/which_countries_offer_PhD_positions_as_paid_jobs_in_English

These PhD positions are advantageous, but not often "on distance", whatever that means. They can however sometimes be used in a half-flexible way. If you want a PhD "on distance", try Walden university

There is another option that may come close. The MOOC platforms have for long worked with nano-master, specialisations, micro-masters and similar course packages in interesting fields and certificates from these are often attractive for employers as a part of a CV. Not cost-free, but rather cheap, and fees are sometimes adapted after country economy. And, more and more, these platforms are offering also BSc and master programmes with ordinary credits and exams. Not free, but not very expensive, and with a lot of flexibility. begin here https://www.coursera.org/degrees and continue search other MOOC platforms as EdX, Futurelearn etc, and search them overall at classcentral.com.

There are also on some US universities online PhD and masters programmes, but they come with a cost - but sometimes cheaper than a campus option.