Unity's particle system, a powerful particle system written for Unity in Mono, a free and open-source .NET Framework-compatible software framework. Unity's particle system supports particles of snowflakes (which can be sprites and models), or hair. Each particle can have a different material, or for the case of sprites, a different texture. Particle systems can also be accelerated by video cards, so many more particle systems can be displayed instead of just flat planes or models which will take longer to render and sacrifice performance for no or worse difference.

Another fun fact is blender partical system is good and yes from the same developers from unitys partical system