# About the Indexers category

**URL:** https://forum.duniter.org/t/about-the-indexers-category/9380
**Category:** Indexers
**Tags:** about-category
**Created:** [30 May 2022 07:34 UTC](https://forum.duniter.org/t/about-the-indexers-category/9380 "2022-05-30T07:34:36Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![HugoTrentesaux](https://forum.duniter.org/user_avatar/forum.duniter.org/hugotrentesaux/32/6396_2.png) [@HugoTrentesaux](https://forum.duniter.org/u/HugoTrentesaux)
#### Post date: [30 May 2022 07:34 UTC](https://forum.duniter.org/t/about-the-indexers-category/9380/1 "2022-05-30T07:34:36Z")

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Indexers are pieces of softwares that listen to the blockchain and index information to make it easier to access for the user.

For a scheme, see [Architecture technique Ğ1v2](https://forum.duniter.org/t/architecture-technique-g1v2/9339)

They can index for example:

- Transaction history
- Aliases of identities
- …

Here is some tooling for substrate ecosystem:

- [https://wiki.polkadot.network/docs/build-tools-index](https://wiki.polkadot.network/docs/build-tools-index)
- [https://wiki.polkadot.network/docs/build-data](https://wiki.polkadot.network/docs/build-data)

* * *

For indexers on a given network see network about page:

- [About the ĞDev category](https://forum.duniter.org/t/about-the-gdev-category/9313)