> For the complete documentation index, see [llms.txt](https://docs.fluentbit.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fluentbit.io/manual/1.0/filter.md).

# Filter Plugins

The *filter plugins* allows to **alter** the incoming data generated by the *input plugins*. As of this version the following filter plugins are available:

| name                                                      | title           | description                                     |
| --------------------------------------------------------- | --------------- | ----------------------------------------------- |
| [grep](/manual/1.0/filter/grep.md)                        | Grep            | Match or exclude specific records by patterns.  |
| [kubernetes](/manual/1.0/filter/kubernetes.md)            | Kubernetes      | Enrich logs with Kubernetes Metadata.           |
| [lua](/manual/1.0/filter/lua.md)                          | Lua             | Filter records using Lua Scripts.               |
| [parser](/manual/1.0/filter/parser.md)                    | Parser          | Parse record.                                   |
| [record\_modifier](/manual/1.0/filter/record_modifier.md) | Record Modifier | Modify record.                                  |
| [stdout](/manual/1.0/filter/stdout.md)                    | Stdout          | Print records to the standard output interface. |
| [throttle](/manual/1.0/filter/throttle.md)                | Throttle        | Apply rate limit to event flow.                 |
| [nest](/manual/1.0/filter/nest.md)                        | Nest            | Nest records under a specified key              |
| [modify](/manual/1.0/filter/modify.md)                    | Modify          | Modifications to record.                        |

In order to let a Filter be applied over some data, the **Match** rule must exists and it must match the Tag for the incoming data.


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