You can refer to the Bitcoin Clients section on this topic.
Bitcoin Core – C ++ / Qt based tabbed UI. Linux / MacOSX / Windows. A full-featured thick client that downloads the entire block chain using the code of the original Bitcoin client.
Bitcoind – The graphical interfaceless version of the original bitcoin client provides a JSON-RPC interface.
MultiBit – A lightweight client offering support for opening multiple wallets simultaneously for Windows, MacOS and Linux.
Electrum – “a fast, open source, multi-operating Bitcoin client / wallet with a very active community“ – also a thin client.
Bither – open source wallet for Android, iPhone and desktop with cold storage support.
Bitcoin Webskin – PHP web interface for Bitcoind.
Bitcoin Explorer – Bitcoin command-line tools for Linux, OSX and Windows, are part of the Libbitcoin SDK.
Bitcoiner – Java RPC client (Android).
Armory – Enterprise-class Python-based client.
Spesmilo – Python / PySide RPC client (abandoned)
WebUI client written in Gocoin – Go, with a cold deterministic brain wallet.
Btcd – An alternative full node bitcoin application written in Go language.
BlockCypher – The full node bitcoin client offered through web APIs for scales and data centers.
Mycelium – Mycelium wallet for Android, which has been awarded the prestigious ”Best Mobile Applications Mobil award by Blockchain.
Cancoin – The multi-signature HSM wallet that uses Libbitkoin. Client-side encryption.
Freecoin – C ++ client supports alternative currencies like Beertoken.
BitDroid – Java client.
Bitdollar – C ++ / Qt client, unstable beta version.
Live Operating Systems
A live operating system can be launched from almost any computer without installation, from a DVD, USB stick, or SD card.
BitKey – Live OS Bitcoin Swedish Knife supports cold storage and de-airing
Tails – Live OS with privacy oriented, provided with Tor and Electrum.
Stock Market Platform Software
Alphapoint – Bitcoin Stock Market Software. Full system required to set up a digital currency exchange. With AlphaPoint, you can customize and launch your own digital currency and Bitcoin exchange in less than 20 days. It also supports automated marketing on your stock exchange using third-party exchanges such as Bitfinex, BTCChina and others. It supports many exchanges and smart routing with automatic account management.
Merkeleon – Bitcoin Stock Market Software. A completely online software solution to establish a secure and reliable platform for the sale and purchase of crypto and major world currencies. Supports money integration.
Shopping Cart Integration for E-Commerce Systems
GoCoin – plugin for WooCommerce support and coming to Magento soon.
Zen Cart Bitcoin Payment Module – Zen Cart is a payment module that interacts with bitcoind for e-Commerce shopping cart.
Coinbase Shopping Cart Add-ons – supports WordPress, WooCommerce, Magento, Zencart, WP e-commerce, and more.
Karsha Shopping Cart Interface – a mobile payment interface that allows users to accept payments.
Bitcoin-Cash – an easy-to-use payment module for xt: Commerce
BitPay – Bitcoin plugins for Magento, Opencart, Zencart, PHP, JSON API
WalletBit – Extensions for Prestashop, OpenCart, PHP, JSON APIs (closed)
XCoinMoney Advanced API for immediate payment and subscription (closed)
OpenCart Bitcoin – OpenCart payment module that communicates with a bitcoin client using JSON RPC.
MyCoin Solution – Bitcoin consulting services and solutions; custom payment integrations (closed)
OsCommerce Bitcoin Payment Module – a payment module that uses a python tracking script to interact with bitcoind for Oscommerce
Drupal Ubercart Bitcoin payment method – Bitcoin webs Drupal / Ubercart feature allows you to accept as payment for your website’s products / services.
Apicoin – First bitcoin PaaS (Platform as a Service)
Bits of Proof – a modular enterprise ready application of Bitcoin protocol.
BlockCypher – Full node bitcoin client built for scale and data center environments.
Cryptopay – wallet hostingcoi, stock market and bitcoin debit card provider
Abe – block chain viewer
Bitcoin Central – stock exchange
Bitcoin_simple_php_tools – simple php tools for webmasters
Blockonomics – Easy to use bitcoin financial tracking tool
Blocktrail – Web wallet with top security. iPhone and Android synchronize with your Blocktrail wallet.
Coinbase – An international digital wallet that allows you to buy, use and accept Bitcoin currency safely.
Coinnext – Crypto Exchange Exchange (closed)
CoinSummary – Multi-money wallet manager with built-in valuation in Bitcoin and worldwide currencies.
Paxful – Bitcoin buying market.
Pocket Dice – The first realistic bitcoin dice game (closed)
Simplecoin – PHP web frontend for mining pool
Cancoin – HSM Multi-sig wallet and p2p stock market
White label software
Alphapoint – Bitcoin Exchange Software. Full system to run a digital currency exchange. Customize and launch your own digital currency and Bitcoin exchange in less than 20 days with AlphaPoint. It also supports automated marketing when you exchange using third-party exchanges, such as Bitstamp and others. It supports many exchanges and smart routing with automatic account management.
Draglet – Bitcoin Stock Market Software / white label solution