Tying Post blog to Social Media

Hi,
Could you please advise on a free, reliable & efficient plugin which would allow to tie/mesh up social medias to blog post similar to the followings one?

Thanks,
Samer

https://www.ndtv.com/indians-abroad/30-000-expected-at-new-yorks-international-yoga-day-celebration-772392

https://www.mindbodygreen.com/0-24588/the-incredible-alternative-to-mindfulness-meditation-you-probably-havent-tried.html?utm_content=buffer6b9d8&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer