> For the complete documentation index, see [llms.txt](https://www.rxjs.es/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.rxjs.es/operadores/utility.md).

# Utilidad

* [delay](/operadores/utility/delay.md)
* [delayWhen](/operadores/utility/delaywhen.md)
* [dematerialize](/operadores/utility/dematerialize.md)
* [finalize](/operadores/utility/finalize.md)
* [materialize](/operadores/utility/materialize.md)
* [observeOn](/operadores/utility/observeon.md)
* [repeat](/operadores/utility/repeat.md)
* [subscribeOn](/operadores/utility/subscribeon.md)
* [tap](/operadores/utility/tap.md)
* [timeInterval](/operadores/utility/timeinterval.md)
* [timeout](/operadores/utility/timeout.md)
* [timestamp](/operadores/utility/timestamp.md)
* [toArray](/operadores/utility/toarray.md)

## Operadores Obsoletos

* [repeatWhen](/operadores/utility/repeatwhen.md) (obsoleto)
* [timeoutWith](/operadores/utility/timeoutwith.md) (obsoleto)