This API enhances RSS by making feeds parsable as JSON and enabling webhooks, so you don't have to periodically poll for updates. Use it to build a news reader, create automations based on blog/podcast updates, generate newsletters from RSS feed updates, and more.

Starting at ~$10 per month

Convert PDFs and images into structured menu data. Use this API to make it easy for restaurants to go digital, create niche dish search engines, compare prices across restaurants etc.

Pricing TBC

This is an API for creating and running polls. Use it to create custom polls for your websites, apps, social media accounts, newsletters, and more.

1,000 free requests, then starting from $10 per month

Get profile information, interact with users, react to videos, etc. This unofficial API lets you do a whole lot on the massively popular TikTok platform. Use it to create a database of influencers, automatically grow your following, find trends, etc. There's always a risk with using unofficial APIs like this, but they can be super helpful when building MVPs or proof of concepts.

Starting at $29 p/m for 300 requests

This API can enhance any application that lets users upload photos. It makes it possible to upscale images while keeping them sharp. Use it to make sure profiles on your product look great or make a product specifically for bulk improving images (could be good for e-commerce site owners).

Starting at $250 per month

This API gives you access to current and historical from the Apple App Store and Google Play Store from 155 countries. Use it to monitor the competition or spot global trends.

Free for 3,000 requests per month, then starting at $2,500 p/m

With travel restrictions changing every day, this API lets you keep track. Use it to create travel guides, monitor deals, or create alerts for businesses.

Starting at $400 for 6 months at 250 requests per day

Transistor is a podcast hosting platform that's just released an API which lets you manage podcasts, episodes, and private podcast subscribers. Use this to automate your podcast editing and publish flow, create custom podcast embeds in your site/app, or start an exclusive community for your private podcast subscribers.

From $19 per month

An API for scheduling social media posts. There are many social media scheduling tools, but finding a decent API to automate posting & scheduling is harder than it initially seems. The Buffer API, which I use, is no longer open for new customers. Ayrshare is an API first option that lets you schedule posts to Facebook, LinkedIn, Twitter, Reddit, and Telegram.

Free for 300 scheduled posts p/m, then custom

An API for creating and managing audit logs. Use this API to create and manage audit logs across your products. This is especially useful if you're building some sort of business software and want to target enterprise customers.

3,000 events p/m for free, then starting at $50 p/m

An API that lets you monitor Google search results from locations around the globe. Use this API to create SEO tools, monitor how your site appears in Google searches from other countries, or generate sales leads based in changes in Google search rankings, ratings, and more. The possibilities with this API are endless and I'm sure you can come up with more creative ideas than me!

From $50 per month for 5,000 searches

An API for ingredients, recipes, food products, and menu items. Use this API to create niche meal plans (vegan, gluten free, Low FODMAP, keto, etc), find alternative ingredients, or add extra food/recipe data to your website or app.

150 free calls per day, then starting at $29 p/m for more

An API for sending and receiving iMessages and SMS. Use this API to stand out by contacting your iPhone loving customers with iMessages instead of SMS messages. This API is in beta and likely has to iron out some bugs, but seems promising. Messages default to SMS when sent to devices that don't support iMessage.

From $19.99 per month

An API lets you easily get a website's brand assets. Use this API to make it super easy for your customers to bring their brand assets to your platform. Instead of making them select colors and upload a logo when they sign up, ask them for their website URL and use this API to automatically do the rest.

100 requests p/m for free, then $129 per month

An API for adding passwordless & biometric logins to your products or services. Use this API to let people login to your product or service using their biometric sensors (fingerprint reader, etc) or webcams.

$0.005 per user per month

A headless ecommerce platform for creating custom storefronts. Use this API to create an ecommerce site, app, widget, or any sort of online storefront with a fully custom front-end. This is ideal for creating unique/novel ecommerce experiences without having to build the essentials, like checkout, CMS, abandoned cart emails, etc.

From $59 per month

A free API for converting vector files (.PS, .SVG, .EPS etc.) Use this API to streamline design workflows, help teammates collaborate across different vector editing tools, or display .eps, .pdf, and other vector files online by converting them to SVGs.

Free, but limited to 60 requests per hour

An API for automating email aliases, domains, and forwarding. Use this API to programatically create unique email addresses for signing up to online services, testing, and automation.

From free for 5 domains & 10 aliases