Tool-Assisted Speedruns (occasionally Tool-Assisted Superplays) or TASes are a subset of speedruns that are created in an emulator with the aid of tools. The goal of a TAS it to play through the game as fast and precisely as possible. The use of tools allows for many strategies and routes not normally possible by a human runner. TASes are not created to compete with standard speedruns and often times speedrunners and TASers share information to help each other improve.
The primary repository of Tool-Assisted Speedruns is TASVideos.org; the TASBot community is an offshoot of the TASVideos community, but the TASBot community is more focused on the process of console verification while the TASVideos community is more focused on TAS creation.