Adopters

Industrial

Banno Group inside of Jack Henry & Associates
Extensively utilizes http4s to deliver mission-critical banking services.
Cammy
Has about 10 services in production at thousands of requests per second.
Eckerd College
Uses http4s for several of its internal services.
看录取 Kanluqu
College application resources for Chinese high school students, built entirely upon the Typelevel stack.
Quantiply
Uses http4s to power the critical data APIs.
Verizon
Uses http4s extensively in its internal services and open source projects.

Libraries

Avias
Functional AWS API implementation for Scala
CouchDB-Scala
a purely functional Scala client for CouchDB
Helm
A native Scala client for interacting with Consul
http4s-directives
Implementation of unfiltered-directives using http4s
http4s-timer
Adds timing capability to http4s, with a possible concrete implementation for New Relic
kamon-http4s
Kamon support for http4s
pureconfig-http4s
Adds support for http4s’ Uri class to PureConfig.
rho
A self-documenting DSL built on http4s
tsec
A type-safe, functional, general purpose security and cryptography library
typedapi
Build your API on the type level

Open Source apps

0x7e.xyz
A simple link-shortener
fleet-buddy
Eve Online fleet buddy based on the CREST API
http4s-demo
an open source demo app built with http4s
http4sbin
A httpbin clone built with http4s
httpize
a httpbin built with http4s (source)
Nelson
Automated, multi-region container deployment
scala-pet-store
An implementation of the java pet store using FP techniques in scala
Smart Backpacker App
Backend of the traveler’s app using the Typelevel stack
todo-backend-typelevel
todo-backend implementation using the Typelevel stack
twitterstorm
Twitter Streaming API Processing Example Project
http4s-index
lists the files and folders becoming a simple light weight web server

Giter8 templates

G8 templates provide a fast way to get started with SBT projects by just running sbt new <template-name>.

http4s.g8
Bootstrap Http4s services
typelevel-stack.g8
Typelevel Stack (Http4s / Doobie / Circe / Cats Effect / Fs2)

Add yourself, alphabetically, if you please.