Griffith College Dublin was created in 1974.
Trinity College Dublin would be generally considered to be the best university in Dublin. Griffith College is not a university and would not have as wide a range of courses, so it certainly is not the best educational institution in Dublin, although it would have some good courses. It really depends on what you are looking for.
Griffith College Cork was created in 2000.
Griffith College Limerick was created in 2006.
University College Dublin was created in 1908.
Mercy College - Dublin - was created in 1963.
Albert College - Dublin - was created in 1838.
Independent College Dublin was created in 2007.
Chanel College - Dublin - was created in 1955.
University College Dublin A.F.C. was created in 1895.
Holy Cross College - Dublin - was created in 1854.
University College Dublin R.F.C. was created in 1910.
University College Dublin Students' Union was created in 1975.