> Portal Navigation:
> 
> - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version.
> - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages).
> - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`).
> - Top-level index of all portals: https://dev.wix.com/docs/llms.txt
> - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt

## Resource: Available Service Plugins

## Article: Available Service Plugins

## Article Link: https://dev.wix.com/docs/develop-websites/articles/coding-with-velo/integrations/service-plugins-formerly-spis/available-service-plugins.md

## Article Content:

# Available service plugins

The following service plugins are available:

| Service Plugin | Description | Resources |
| -------------- | ----------- | --------- |
| Bookings Custom Pricing | Customize pricing for bookings to offer varied pricing to the bookings purchase flow. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-bookings/tutorial-bookings-pricing-service-plugin.md), [Reference](https://www.wix.com/velo/reference/spis/wix-bookings/bookings-custom-pricing) |
| External Database Collection | Use external databases. | [Reference](https://dev.wix.com/docs/velo/events-service-plugins/data/service-plugins/external-database-collection-legacy/introduction.md) |
| Billing Tax Calculation | Customize your tax calculations. | [Reference](https://dev.wix.com/docs/velo/events-service-plugins/billing/service-plugins/billing-tax-calculation/introduction.md) |
| Automations Action | Write a custom action instead of selecting a pre-made action. | [Reference](https://dev.wix.com/docs/velo/events-service-plugins/automations/service-plugins/automations-actions/introduction.md) |
| eCommerce Additional Fees | Add additional fees for things like location and special handling to your store's checkout flow. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-e-commerce-stores/e-commerce-additional-fees-service-plugin.md), [Reference](https://www.wix.com/velo/reference/spis/wix-ecom/ecom-additional-fees) |
| eCommerce Catalog (Beta) | Define your own custom catalog and how it interacts with the eCommerce purchase flow. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-e-commerce-stores/e-commerce-catalog-service-plugin.md), [Reference](https://www.wix.com/velo/reference/spis/wix-ecom/ecom-catalog) |
| eCommerce Discount Triggers | Apply discount rules to a site visitor's cart and checkout. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-e-commerce-stores/tutorial-custom-discount-trigger-service-plugin.md), [Reference](https://dev.wix.com/docs/velo/events-service-plugins/e-commerce/service-plugins/ecom-custom-discount-triggers/introduction.md) |
| eCommerce Payment Settings | Apply custom payment settings during the payment process of an order. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-e-commerce-stores/tutorial-payment-settings-service-plugin.md), [Reference](https://www.wix.com/velo/reference/spis/wix-ecom/ecom-payment-settings) |
| eCommerce Shipping Rates | Provide custom shipping rates fees to your store's checkout flow. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-e-commerce-stores/e-commerce-shipping-rates-service-plugin.md), [Reference](https://www.wix.com/velo/reference/spis/wix-ecom/ecom-shipping-rates) |
| eCommerce Validations | Validate a site visitor's cart and checkout. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-e-commerce-stores/tutorial-validations-service-plugin.md), [Reference](https://www.wix.com/velo/reference/spis/wix-ecom/ecom-validations) |
| Payments Payment Provider | Provides functionality for integrating a site with payment providers not currently supported by Wix. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-pay/tutorial-payment-provider-service-plugin.md), [Reference](https://www.wix.com/velo/reference/spis/wix-payments/payment-provider) |
| Form Submission | Provides additional form submission validation. | [Tutorial](https://dev.wix.com/docs/develop-websites/articles/code-tutorials/wix-forms/tutorial-form-submission-service-plugin.md), [Reference](https://dev.wix.com/docs/velo/events-service-plugins/forms/service-plugins/form-submission/introduction.md) |