The Riak Community is developing at a break-neck pace, and the number of community-contributed libraries and drivers is growing right along side it. Here is a list of projects that may suit your programming needs or curiosities. If you know of something that needs to be added or are developing something that you wish to see added to this list, please fork the Riak Wiki repo on GitHub and send us a pull request.

Client Libraries and Frameworks

C/C++

• riak-cpp – A C++ Riak client library for use with C++11 compilers
• Riak C Driver

Clojure

• knockbox – An eventual-consistency toolbox for Clojure
• Welle – Experimental idiomatic Clojure wrapper around the Riak Java Driver
• clj-riak – Clojure bindings to the Riak Protocol Buffers API

Common Lisp

• cl-riak (1)
• cl-riak (2)

Django

• django-riak-sessions – Riak-based Session Backend for Django
• Django Riak Engine – A Riak backend for Django

Go (Go is a language recently released by Google. Read more about it here.)

• riak.go – a Riak Client for Go

Grails

• Grails ORM for Riak

Griffon

• Riak Plugin for Griffon

Groovy

• spring-riak – Riak support from Groovy and/or Java

Erlang

• Riak PBC Pool – Riak Protocol Buffer Client pool application
• Pooly – Riak Process Pool
• riakpool – Application for maintaining a dynamic pool of Protocol Buffer client connections to a Riak database
• pooler – An OTP Process Pool Application

Haskell

• Riak Haskell Client – A fast Haskell client library from the team at MailRank.

Java

• Riak-Java-PB-Client – Java Client Library for Riak based on the Protocol Buffers API
• Asynchronous Riak Java Client – Asynchronous, NIO-based Protocol Buffers client for Riak

Lisp Flavored Erlang

• Gutenberg – Riak MapReduce Examples Written in LFE

.NET

• CorrugatedIron (project page | source | Nuget package)
• Hebo
• Data.RiakClient

Node.js

• resourceful-riak – A Riak engine to the resourceful model framework from flatiron.
• Connect-Riak – Riak Session Store for Connect backed by Riak-js
• Riak-js – Node.js client for Riak with support for HTTP and Protocol Buffers
• Riakjs-model – a model abstraction around riak-js
• Node-Riak
• Nori – Experimental Riak HTTP Library for Node.js modeled after Ripple
• OrionNodeRiak – Node-based server and database-frontend for Sproutcore

Perl

• Net::Riak
• AnyEvent-Riak adapter
• riak-tiny – Perl interface to Riak without Moos

PHP

• Ripple-PHP – A port of Ripple to PHP
• riiak – A Riak PHP client library for the Yii Framework

Play

• Riak Module for The Play Framework

Python

• RiakKit – A small Python ORM that sits on top of riak-python-client similar to mongokit and couchdbkit
• riakalchemy – Object mapper for Riak written in Python
• riak_crdt – A CRDT (Conflict-Free Replicated Data Type) loader for Riak using the crdt API
• txriak- a Twisted module for communicating with Riak via the HTTP interface
• txriakidx – Riak client for Twisted Python that implements transparent indexes

Racket

• Racket-Riak – Racket API to Riak

Ruby

• Shogun – A light weight, powerful Ruby web application framework with first class support for Riak.
• Risky – A lightweight Ruby ORM for Riak
• Riak Model
• Riak DataObjects adapter
• Riak Sessions for rack
• Riaktor – Ruby client and object mapper for Riak
• DataMapper Adapter for Riak
• Riak PB Client – Riak Protocol Buffer Client in Ruby
• Devise-Ripple – An ORM strategy to use Devise with Riak
• Ripple-anaf
• Pabst – Cross-platform Ruby extension for Protocol Buffers written in both Objective-C and Objective-C++

Scala

• Riakka
• Ryu - A `Tornado Whirlwind Kick` Scala Client

Smalltalk

• Phriak – a Riak client for Pharo Smalltalk based on Runar Jordan’s EpigentRiakInterface
• EpigentRiakInterface – A Pharo Smalltalk interface to Riak. (There is also a blog post with some additional info about the client here.)

Monitoring, Management, and GUI Tools

• riak_node (for Munin) – Munin plugin for monitoring GET and PUT traffic
• riak_memory (for Munin) – Munin plugin for monitoring memory allocation
• Nagios Plugins for Riak
• Riak-Console – An interactive command line interface to Riak
• Rekon – Riak Node Data Browser
• Gmond Python Modules for Riak – Ganglia Module for connecting to Riak
• riak-admin – A Java program with GUI to browse and update a Riak database
• Riak Admin – A Futon-like web interface for Riak
• riak-session-manager – A Riak-backed Tomcast Session Manager
• app-karyn – Simple command line utility for working with Riak objects
• Briak – A Sinatra-based web front-end browser for Riak

Backup Tools

• Brackup – A modern net-based backup system that supports de-duplication, intelligent chunking, and gpg-based-encryption

riak_core

• Misultin Riak Core VNode Dispatcher
• ecnty – Partitioned Counter Based on Riak Core
• rebar_riak_core – Rebar templates for generating riak_core applications
• Try Try Try – Ryan Zezeski’s working blog that explores many aspects of riak_core (this is an amazing resource)
• riak_zab – an extension for riak_core that provides totally ordered atomic broadcast capabilities
• riak_zab_example – an example application that allows you to build a multi-node cluster using riak_zab

Riak and RabbitMQ

• Riak/RabbitMQ Commit Hook – A Post-Commit hook that sends entries into a RabbitMQ broker using the Erlang AMQP client
• riak-exchange – Custom RabbitMQ exchange type for sticking messages in Riak
• rabbit_riak_queue – Riak-backed RabbitMQ persistent queue implementation
• msg_store_bitcask_index – RabbitMQ message store index with Bitcask Backend
• RabbitMQ-Riak Core Vnode Dispatcher

Lager

• Lager AMQP Backend

Recipes, Cookbooks, and Configurations

• Scalarium-Riak – Riak Cookbooks for Scalarium Platform
• Riak Chef Recipe – Vanilla Chef Recipe for installing and configuring Riak
• Custom Chef Recipe for running Riak on the Engine Yard AppCloud
• RiakAWS – A simple way to deploy a Riak cluster in the Amazon Cloud
• Using Nginx as a front-end for Riak
• Sample HA Proxy Configuration for Protocol Buffers Interface (courtesy of Scott M. Likens)
• Sample HA Proxy Configuration for Protocol Buffers Interface (courtesy of Bob Feldbauer)

Other Tools and Projects

• ldapjs-riak – A Riak backend for ldapjs
• otto – S3 Clone built on top of Cyclone with support for Riak
• Riakyo – Kyoto Cabinet backend for Riak
• Riaktivity – A Ruby library for storing timelines in Riak
• Timak – A Python library for storing timelines (activity streams) in Riak
• Statebox_Riak – Convenience library that makes it easier to use Statebox with Riak. (There is a great blog post from the Mochi Team about how this is used in production here. )
• bitcask-ruby – An interface to the Bitcask storage system
• Riak BTree Backend – Backend for Riak/KV based on couch_btree*
• Riak Link Index – Simple Indexer for Riak based on Links
• rack-rekon – A Rack application to serve Rekon
• ring-session-riak – A Riak implementation for Ring Session
• Riak to CSV Export – A simple way to export your Riak buckets to CSV files
• Couch to Riak
• Chimera – An object mapper for Riak and Redis
• Riak_Redis Backend
• Riak Homebrew Formula
• Riak-fuse - A FUSE Driver for Riak
• riakfuse – A distributed filesystem that uses riak as its backend store
• ebot – A scalable Web Crawler that supports Riak as a backend
• riak-jscouch – JSCouch examples done with Riak
• riak_tokyo_cabinet – A Tokyo Cabinet back end for Riak