Extensions are plugins that provide extra features for UpStream.

## Is there a free version of UpStream?

Yes, the main UpStream plugin is [free to download from WordPress.org](https://wordpress.org/plugins/upstream/). This plugin contains many key features, and can be used successfully for your project management.

## Are extensions included with the free UpStream plugin?

No, you must purchase and install the extensions:

- [Click here to purchase extensions](https://upstreamplugin.com/bundles/).
- [Click here to see a list of all the available extensions](https://upstreamplugin.com/upstream-extensions/).
- [Click here to see how to install extensions](https://support.upstreamplugin.com/hc/upstream-plugin/articles/install-upstream-extensions).

## Why do we sell extensions?

First, we can’t include every possible feature in the free UpStream plugin. If we included every feature, the plugin would become large and overly-complex.

Second, selling premium extensions is how the UpStream team make a living. Without the income from premium extensions, we wouldn’t be able to develop the free plugin. If you like UpStream, please consider supporting us by [subscribing to an UpStream bundle](https://upstreamplugin.com/pricing).