Ollama
ollama.com
A command-line tool for running large language models locally on Mac, Linux, and Windows with a simple pull-and-run workflow.
Why it is useful
Reduces running a local AI model to a single terminal command — the same mental model as pulling a Docker image. The REST API it exposes is OpenAI-compatible, meaning existing tools and integrations work out of the box. For developers building local AI applications or power users who want a scriptable interface to local models, it is the most widely adopted solution.