# What can I build in Stacker?

Stacker allows you to create instant apps you can use to share data and interact with customers, partners, students, staff or anyone else.

You can[ set rules around who can see and edit your data.](https://docs.stackerhq.com/stacker-classic/permissions-and-security) This allows users to login, access, update and create data that is relevant to them.

<figure><img src="https://uploads-ssl.webflow.com/60798d77be76070f831d5989/615d9c6a5993926872008844_windmill-stacker-help-center.png" alt="Build a customer portal in Stacker"><figcaption></figcaption></figure>

### Internal tools

Build the internal tools that are crucial for your workflows. This might be a project management tool, an app to track job applicants or a cross-team collaboration hub.

<figure><img src="https://uploads-ssl.webflow.com/60798d77be76070f831d5989/615d9c79ed007a64651ebf8f_datafire-stacker-help-center.png" alt="An internal tool built in Stacker"><figcaption></figcaption></figure>

### Workflow tools

Allocate different [roles](https://docs.stackerhq.com/stacker-classic/permissions-and-security/set-up-user-roles) to different users, for example - managers, clients and customers experience your app according to the rules you have set.

<figure><img src="https://uploads-ssl.webflow.com/60798d77be76070f831d5989/615d9ca810c2e8b034a63fce_firetable-stacker-help-center.png" alt="A workflow app built in Stacker"><figcaption></figcaption></figure>

You can build almost anything in Stacker - companies such as **TED**, **Mozilla** and **Adobe** have used Stacker to build apps including:

* Self-service portals for customers and clients
* Workflow apps for their team
* Collaboration tools for partners
* Vendor apps for updating information
* Project portals for working with clients
* Internal databases for teams

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Need some extra help with your use case? Reach out to the Stacker community [here](https://community.stackerhq.com/).&#x20;
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