> For the complete documentation index, see [llms.txt](https://docs.fluentd.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fluentd.org/readme.md).

# Introduction

![](/files/-MCBvw4iL4YJi-c0r_2t)

[Fluentd](https://www.fluentd.org/) is an open-source data collector for a unified logging layer. Fluentd allows you to unify data collection and consumption for better use and understanding of data.

[Fluentd](https://www.fluentd.org/) is licensed under the terms of the [Apache License v2.0](http://www.apache.org/licenses/LICENSE-2.0). This project is made and sponsored by [Treasure Data](https://www.treasuredata.com).