Other than gravity, which is the weakest of the four, mentioned in a separate article, there are three remaining known forces within the universe that make everything we see today possible. These remaining forces are the Electromagnetic force, the Weak Nuclear and the Strong Nuclear Forces. Without forces, no compounds or any interactions between particles would be possible. The universe would not be lit up by any stars or galaxies that fill the majestic skies at night.
The electromagnetic force is responsible for interactions between particles with a charge. This includes not only protons and electrons, but also atoms and molecules. This force has serious implications in the fields of chemistry, biology and more.
The strong and weak nuclear forces, as their name suggests, act on atomic levels. These forces are responsible for holding together charged particles such as protons within the nucleus. Since protons are positively charged, it takes a great deal of energy to keep them together. However strong these forces are on the nuclear level, they have no power on any large scales; this is where gravity mostly takes over.