SoundCloud

Audio hosting with an embeddable player. Up to 3 hours of content is free.

Mixcloud

Audio hosting with unlimited uploads and an embeddable player.

Spotify

You can embed any song, album, or playlist with a [Spotify Play Button](https://developer.spotify.com/documentation/widgets/guides/adding-a-spotify-embed/).

Goodreads API and widgets

Allows you to access any of the Goodreads data. Widgets are found on the widgets tab on your [settings page](https://www.goodreads.com/user/edit).

Google Calendar

Embeddable calendar that you can collaborate with other people.

Booking.js

Beautiful embeddable booking widget.

zenplanner

Paid - Online scheduling for fitness.

Flickr

Online photo hosting by Yahoo.

Cloudinary

Image hosting, manipulation and delivery.

Google Maps

Google maps are easily embeddable.

Mapbox

Really nice looking embeddable maps.

uMap

Create and embed personalized maps, based on the great [OpenStreetMap](https://openstreetmap.org) dataset.

Prezi

Online presentations with really transitions that can zoom and rotate.

Reveal.js

HTML presentation framework.

Slides.com

A place for creating, presenting and sharing slide decks.

SpeakerDeck

Upload your slides as a PDF, and get an online, shareable presentation.

Mux

Paid - An API to play videos directly to the client. Can also power live streams.

YouTube

Embeddable videos with unlimited uploads.

Vimeo

Paid - Embeddable videos with no ads.

Vevo

Embeddable music videos.

Wistia

Free plan has a limit of 25 videos.

Codepen

A playground of embeddable front-end code examples.

JS Bin

Embeddable front-end code examples.

JSFiddle

Embeddable front-end code examples.

highlight.js

Syntax highlighting for the web.

Indiepen

A privacy-friendly solution to embed front-end code examples.

1Backend

Deploy your backend in seconds. Free tier included. Open source.

AWS Lambda

AWS Lambda lets you run code without provisioning or managing servers. You pay only for the compute time you consume

Google Cloud Functions

Create single-purpose, stand-alone functions that respond to Cloud events without the need to manage a server or runtime environment

Webtask by Auth0

Call code on the server with simple HTTP, easier to set up by far than Lambda or Google's

Azure Functions

by Microsoft - same premise as Lambda on the Azure cloud

IronWorkers

by Iron.io - Run code in a multilanguage containerized environment with unlimited scale and simple pricing

IronFunctions

by Iron.io - IronFunctions is an open source serverless computing platform for any cloud - private, public, or hybrid.

OpenWhisk by IBM

part of their BlueMix hosting platform, and open source, ties into their Watson AI ecosystem nicely

StackPath EdgeEngine

Write functions as a service in the language of your choice and deploy them to a global network of data centers. All the networking, including intelligent routing and load balancing, is managed by StackPath over a private backbone.

Cloud 66

Build and deploy static websites to your own cloud account.

Vercel

Vercel lets people write functions as a service in their language of choice and deploy as part of a monorepo.

Azure Static Web Apps

Full-stack static app hosting including serverless Functions, authentication, CDN and more

Qoddi

Full stack app hosting with data storage included, similar to Heroku with a developer centric approach. Free to use up to 3 apps.

Autocode

Autocode turns functions into scalable web services in an instant, no configuration required; serverless hosting available with an in-browser IDE, an API library that’s easy to use, and seamlessly managed authentication.

FaunaDB

Serverless GraphQL database. Free tier with no time limit. Easily included in Netlify apps.

Staticman

Staticman is a Node.js application that receives user-generated content and uploads it as data files to a GitHub repository. In practice, this allows you to have dynamic content (e.g. blog post comments) as part of a fully static website, as long as your site automatically deploys on every push to GitHub, as seen on GitHub Pages, Netlify and others.

Disqus

Easily embeddable comments with nested replies, multiple login methods, and email notifications.

Facebook Comments

Embeddable comments for your site by Facebook.

IntenseDebate Comments

Embeddable comments with nested replies, multiple login methods, and email notifications.

LiveFyre

Real-time comments, SEO-optimized, stocked with social features, and beautiful on both desktop and mobile.

Redditjs Embed Widget

Embed Reddit comments on your site. If it hasn't been posted, it will show a link to encourage the user to submit.

Muut.com

Embeddable comments, forum and private messaging. A lot of functionality, but really low footprint left on your website.

Gitment

Comment system based on GitHub Issues, which can be used in the frontend without any server-side implementation.

giscus

A comments widget built on GitHub Discussions.

utterances

A lightweight comments widget built on GitHub issues.

Formspree

Receive emails from a form on your static website.

elFormo

Simple form processing and response retrieval via email.

Flipmail

Simple form processing and response retrieval via email.

MailThis

Simple form submissions via email with optional attachments.

Simple Form

Simple forms with optional file attachments, email notifications, and online submission viewing.

Brisk Forms

Free form submission service emails you responses while keeping your email address private and is open source.

99 Inbound

Form endpoint service with email/Slack notifications and third party app integrations (e.g. MailChimp)

Getform

Form backend platform for designers and developers, with email and integrations.

HeyForm

Free, easy-to-use drag & drop form maker capable of crafting powerful online forms. Includes 40+ field types, integrations, analytics, and more.

Form.taxi

Backend to handle form submissions easily and reliably, with email notifications, file uploads and GDPR-compliant data processing.

Formcarry

Hassle-free HTML form endpoints for your form, powerful dashboard, reliable spam blocking, attachment uploads and Zapier integrations.

Formcake

The form backend built for developers: Zapier integrations, simple endpoint API, unlimited forms.

Google Forms

Saves results into Google Sheets and can email you when there is a submission.

FormKeep

Paid - View form submissions in a beautiful web interface. It has spam filtering and it integrates with webhooks such as Gmail, Trello, and Basecamp.

123 Contact Form

Connects to other online services such at MailChimp, Salesforce, and Google Drive. It also integrates with payment Processers and includes security and analytics.

FormAssembly

Allows you to build any kind of form that can include complex branching logic and multiple pages.

FormSite

Form builder with payments and form management.

FormStack

Forms with A/B testing, partial submission, analytics, and integrations.

Sheetsu

POST and GET your data to Google Spreadsheet.

Typeform

Awesome forms that can be embedded.

Wufoo

Free or Paid - Forms that you can build with a form designer, with notifications, reports, and payments.

Zoho

Forms with file upload and captcha.

GitHub Issues

This is an interesting way for developers to get comments/questions. See [github.com/sindresorhus/ama](https://github.com/sindresorhus/ama) for an example.

Utterences

A lightweight comments widget built on GitHub issues.

FormBackend

Create form-backends and submit your HTML forms to our backend. View the entries online and connect to other services. Receive an email every time a new entry is submitted.

Pageclip

A flexible server / backend for HTML forms. View your data in the realtime web interface, or use the API to get CSV and JSON output.

Formester

Forms and email marketing (lead collection, email campaigns, and newsletters) with integrations.

StaticKit

Modern forms for static sites, with native support for React.

SheetDB

Turn a Google Spreadsheet into a JSON API.

Form2Channel

Post your HTML form to Form2Channel to store submissions in Google Sheets and receive them via email, Slack or Telegram. No signups, no costs, no limits.

reCAPTCHAme

reCAPTCHA and hCAPTCHA token verification service. Post your form to reCAPTCHAme to avoid getting spammed. Made for static websites, no server-side coding required.

Formware

Conversational forms with unlimited responses that can be embedded on any website.

Netlify

Netlify comes with built-in form handling.

jivochat

JivoSite is a professional live chat for websites that was specifically designed to increase your online sales.

LiveChat

Live chat on your website.

Olark

Live chat on your website. You can also see who's on your website and what they're doing.

SnapEngage

Live chat with integrations and custom styles.

tawk.co

Lets you monitor and chat with visitors on your website.

WebsiteAlive

Live chat for your website & social networks.

Zopim

Live chat with free trial.

Tiledesk

Free Live Chat with open source chatbot builder.

MailChimp

Free email marketing. You can pay to add more features.

Constant Contact

Email marketing with campaigns, autoresponders, and analytics.

AWeber

Email marketing with campaigns, autoresponders, and analytics.

Campaign Monitor

Email marketing with campaigns, autoresponders, and analytics.

MailerLite

Free email marketing. You can pay for more subscribers.

Pinterest

Pin It Button.

Twitter

Embedded tweets.

Facebook

Facebook embedded plugins.

ShareThis

Sharing buttons for multiple social networks.

Kontaktify

A contact widget that provides an easy way for visitors to get in touch.

Google Forms

You can use Google forms for surveys or for forms on your site.

SurveyMonkey

Easy to use and free surveys.

Typeform

Really beautiful forms.

Qualaroo

Embed surveys anywhere on your website that comes up from the bottom right side of the screen.

Insight Stash

Fast, Simple survey forms.

Formware

Create stunning surveys with unlimited responses for free.

Ecwid

Embeddable shopping cart.

FoxyCart

Add a shopping cart with basic html code.

Snipcart

Include a few lines of code for a full online shop.

Gumroad

An all-in-one solution to sell your work.

Payhip

An embeddable way to sell digital downloads & memberships

Moltin

Add eCommerce functionality to anything.

Trolley

Add a popup cart to any website - designed for static & JAMstack sites.

Commerce Layer

Add enterprise ecommerce to your JAMstack.

lunr.js

Simple full-text search in your browser.

itemsjs

Full text, faceted, almost dependency free search engine in javascript

minisearch

Tiny and powerful JavaScript full-text search engine for browser and Node

flexsearch

Next-Generation full text search library for Browser and Node.js

fuse.js

Powerful, lightweight fuzzy-search library, with zero dependencies

static-search

A Go program to generate JSON index of HTML files, and a JavaScript component with optional UI to search this index

elasticlunr

Lightweight full-text search engine developed in JavaScript for browser search and offline search based on Lunr.js

tinysearch

Tiny, full-text search engine for static websites built with Rust and Wasm

js-search

Client-side searches of JavaScript and JSON objects, ES5 compatible and does not require jQuery or any other third-party libraries

search-index

A persistent, network resilient, full text search library for the browser and Node.js

fuzzysearch

Tiny and blazing-fast fuzzy search in JavaScript

fuzzy

Fuzzy search / filter for browser and node

fullproof

Javascript library that provides high-quality full-text search in the browser

Jets.js

Native CSS search engine

Hulipaa

Static full-text search engine capable of handling thousands of pages with a minimalist searchbar UI to add to your static website.

Google Custom Search Engine

Search your site with a custom Google Search.

Algolia

Hosted Search API that delivers instant and relevant results from the first keystroke.

CloudSh

Powerful search for your website with a few lines of JavaScript.

Google Analytics

Freemium web analytics service offered by Google.

Simple Analytics

💲 - Simple, clean, and friendly analytics.

Uthentic

Serverless, passwordless login for static sites in 2 lines of code.

BulkPicTools

A privacy-first, browser-based batch image processor for static site creators, leveraging WebAssembly for local compression and conversion.

Sketch Fab

Embeddable 3D content.

Awesome Static Hosting

Awesome Azure Static Web Apps