# Formulas

- [Apps](/formulas/apps.md): Explore the apps we've already built formulas for.
- [Webflow](/formulas/apps/webflow.md): Interact with your Webflow CMS Collections to view, add, update, and delete items easily with SheetLink formulas in Google Sheets.
- [HubSpot](/formulas/apps/hubspot.md): The HubSpot APIs are designed to enable teams of any shape or size to interact with their HubSpot data.
- [OpenAI](/formulas/apps/openai.md): The OpenAI API can be applied to virtually any task that involves understanding or generating natural language or code. GPT3 is one of OpenAI's most popular AI models.
- [Memberstack](/formulas/apps/memberstack.md)
- [Slack](/formulas/apps/slack.md)
- [Twitter](/formulas/apps/twitter.md)
- [Gmail](/formulas/apps/gmail.md)
- [Respond.io](/formulas/apps/respond.io.md): The Respond.io API allows you to add, edit and retrieve contact information.
- [Airtable](/formulas/apps/airtable.md): Use the Airtable API to create, read, update, and destroy records in your Airtable Base.
- [bit.io](/formulas/apps/bit.io.md): The fastest way to get a database
- [MetaWeather](/formulas/apps/metaweather.md): MetaWeather provides an API that delivers JSON over HTTPS for access to live weather data.
- [CoinMarketCap](/formulas/apps/coinmarketcap.md): Showcasing the crypto revolution to +270M monthly visitors!
- [Bannerbear](/formulas/apps/bannerbear.md): A service that auto generates images and videos.
- [NFTPort](/formulas/apps/nftport.md): The Stripe for NFTs: One-Stop & Simple NFT Infrastructure & APIs for Developers
- [OpenSea](/formulas/apps/opensea.md): The world's first and largest NFT marketplace
- [Stripe](/formulas/apps/stripe.md): Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes.
- [Moralis](/formulas/apps/moralis.md): The Web3 Operating System: Build & scale their dApps without the cost & complexity.
- [Functions](/formulas/functions.md): Powerful functions unique to SheetLink.
- ["options"](/formulas/options.md): Control the request to and response from any application.