View source for Clients

==Overview==
A bitcoin client is the end-user software that facilitates [[private key]] generation and security, payment sending on behalf of a private key, and optionally provides:
* Useful information about the state of the network and transactions.
* Information related to the private keys under its management.
* Syndication of network events to other peer clients.

This table compares the features of the different clients. All of the listed clients are open-source.

===Feature key===

; Wallet Security : How well the client protects your [[private key]]s from people with access to the machine the wallet is stored on. The private keys can be encrypted, for example. The private keys can also be either stored on your device or on a remote server.
; Network Security : Clients which more fully implement the Bitcoin network protocol are safer -- they can't be as easily tricked by powerful attackers. A client which ''fully'' implements the protocol will always use the correct [[block chain]] and will never allow [[double-spending|double-spends]] or invalid transactions to exist in the block chain under any circumstances. Clients which only ''partially'' implement the protocol typically trust that 50% or more of the network's mining power is honest. Some clients trust one or more ''remote servers'' to protect them from double-spends and other network attacks.
; Setup Time : Some clients require that you download and verify a large amount of data before you can send or receive BTC.
; Maturity : When the project was started.

===Table===

<!-- please keep this alphabetic -->
{| class='wikitable' style='text-align: center'
! Client !! Get Started !! Audience !! Wallet Security !! Network Security !! Backups !! Setup Time !! Disk Space !! Maturity !! Multi-user !! Available for
|-
! [[Airbitz]]
|| [https://airbitz.co/app Download] || {{CLBest|Everyone}} || {{CLGood|Encrypted, on-device. Server backup}} || Partial || {{CLGood|Automatic}} || {{CLBest|Instant}} || {{CLGood|20 MB}} || Oct 2014 || {{CLBest|Multi-wallet}} || {{CLAndroid}}{{CLiOS}}
|-
! [[Armory]]
|| [https://bitcoinarmory.com/download Download] || Power users || {{CLGood|Encrypted, on-device}} || Addon || {{CLBest|One-time}} || {{CLBad|Hours}} || {{CLBad|40+ GB}} || Jul 2011 || {{CLBest|Multi-wallet}} || {{CLLinux}}{{CLMac}}{{CLWin}}
|-
! [[Bitcoin Core]]
|| [http://sourceforge.net/projects/bitcoin/files/Bitcoin/ Download] || {{CLGood|End-users}} || {{CLGood|Encrypted, on-device}} || {{CLBest|Full}} || Manual || {{CLBad|Hours}} || {{CLBad|20+ GB}} || {{CLGood|May 2011}} || No || {{CLLinux}}{{CLMac}}{{CLWin}}
|-
! [[bitcoind]]
|| [http://sourceforge.net/projects/bitcoin/files/Bitcoin/ Download] || Programmers || {{CLGood|Encrypted, on-device}} || {{CLBest|Full}} || Manual || {{CLBad|Hours}} || {{CLBad|20+ GB}} || {{CLBest|Aug 2009}} || {{CLGood|Virtual accounts}} || {{CLLinux}}{{CLWin}}
|-
! [[Bitcoin Wallet]]
|| [https://play.google.com/store/apps/details?id=de.schildbach.wallet Google Play] [https://appworld.blackberry.com/webstore/content/23952882/ BlackBerry World] || {{CLGood|End-users}} || {{CLGood|Isolated, on-device}} || Partial || Manual || {{CLBest|Instant}} || {{CLGood|15 MB}} || {{CLGood|Mar 2011}} || on JB tablets || {{CLAndroid}} [[file:ico-blackberry.png]]
|-
! [[Electrum]]
|| [https://electrum.org/download.html Download] || Power users || {{CLGood|Encrypted, on-device}} || Minimal || {{CLBest|Memorized}} || {{CLGood|Minutes}} || {{CLGood|5 MB}} || Nov 2011 || No || {{CLAndroid}}{{CLLinux}}{{CLMac}}{{CLWin}}
|-
! [[GreenAddress]]
|| [https://greenaddress.it Web] [https://chrome.google.com/webstore/detail/greenaddressit/dgbimgjoijjemhdamicmljbncacfndmp ChromeApp] [https://play.google.com/store/apps/details?id=it.greenaddress.cordova&hl=en Google Play] || {{CLBest|Everyone}} || {{CLGood|Encrypted, on-device}} || {{CLBad|Remote}} || Memorized/Manual || {{CLBest|Instant}} || {{CLBest|None}} || Apr 2013 || {{CLBest|Yes}} || {{CLAndroid}}{{CLLinux}}{{CLMac}}{{CLWin}}
|-
! [[Gocoin]]
|| [https://github.com/piotrnar/gocoin Build yourself] || Power users || Designated offline PC || {{CLBest|Full}} || {{CLBest|Memorized}} || {{CLBad|Hours}} || {{CLBad|20+GB}} || May 2013 || {{CLBest|Multi-wallet}} || {{CLLinux}}{{CLMac}}{{CLWin}}{{CLFreeBSD}}
|-
! [[MultiBit]]
|| [https://multibit.org/releases.html Download] || {{CLGood|End-users}} || {{CLGood|Encrypted, on-device}} || Partial || {{CLGood|Automatic (local)}} || {{CLBest|Seconds}} || 50 MB || Jul 2011 || {{CLBest|Multi-wallet}} || {{CLLinux}}{{CLMac}}{{CLWin}}
|-
! [[Mycelium]]
|| [https://mycelium.com/download Download] [https://play.google.com/store/apps/details?id=com.mycelium.wallet Google Play]|| {{CLBest|Everyone}} || {{CLGood|Isolated, on-device}} || Partial || Manual, encrypted || {{CLBest|Instant}} || {{CLGood|10 MB}} || Sep 2013 || No || {{CLAndroid}}{{CLiOS}}
|-
! [[BlockChain.info#Wallet|My Wallet]]
|| [https://blockchain.info/wallet/new Web-based] || {{CLBest|Everyone}} || {{CLBad|Encrypted, on a blockchain.info server}} || {{CLBad|Remote}} || {{CLGood|Automatic}} || {{CLGood|Minutes}} || {{CLBest|None}} || Dec 2011 || {{CLBest|Yes}} || {{CLAndroid}}{{CLiOS}}{{CLLinux}}{{CLMac}}{{CLWin}}
|}


<!-- For Wallet Security: CLBest is reserved for multisig-based -->

==For developers==

This table shows additional information about various Bitcoin clients that may be relevant to developers.

{| class='wikitable' style='text-align: center'
! Client !! Website !! Source Code !! License !! Discussion !! Architecture
|-
! Armory
|| [http://bitcoinarmory.com/ Link] ||[https://github.com/etotheipi/BitcoinArmory/ Github] || AGPLv3 || [https://bitcointalk.org/index.php?board=97.0 Bitcointalk] || Integrated
|-
! Bitcoin Wallet
|| [https://github.com/schildbach/bitcoin-wallet Link] || [https://github.com/schildbach/bitcoin-wallet Github] [https://code.google.com/p/bitcoin-wallet/source/checkout Google Code] || GPLv3 || [https://plus.google.com/b/101256420499771441772/communities/105515929887248493912 Google+ community] / [https://bitcointalk.org/index.php?board=100.0 Bitcointalk] || [[Thin Client Security#Simplified Payment Verification (SPV)|SPV]]
|-
! Bitcoin Core / bitcoind
|| [http://bitcoin.org/ Link] || [https://github.com/bitcoin/bitcoin Github] || MIT || [https://lists.sourceforge.net/lists/listinfo/bitcoin-development Sourceforge] || Integrated
|-
! Electrum
|| [http://ecdsa.org/electrum/ Link] || [https://gitorious.org/electrum Gitorious] || GPLv3 || [https://lists.sourceforge.net/lists/listinfo/electrum-discuss Sourceforge] || [[Thin Client Security#Simplified Payment Verification (SPV)|SPV]]
|-
! GreenAddress
|| [https://greenaddress.it/ Link] || [https://github.com/greenaddress/ Github] || LGPLv3 || [https://bitcointalk.org/index.php?topic=521988.0 Bitcointalk] || [[Server-Client+SPV(Electrum)]]
|-
! MultiBit
|| [http://multibit.org/ Link] || [https://github.com/jim618/multibit Github] || MIT || [https://groups.google.com/forum/?fromgroups#!forum/bitcoin-multibit Google Groups] || [[Thin Client Security#Simplified Payment Verification (SPV)|SPV]]
|-
! My Wallet
|| [https://blockchain.info/wallet/ Link] || [https://github.com/blockchain/My-Wallet/ Github] || BSD* || None || [[Thin Client Security#Server-Trusting Clients|Server-Client]]
|-
! bits of proof
|| [http://bitsofproof.com Link] || [https://github.com/bitsofproof/supernode Github] || Apache 2.0 || [https://bitcointalk.org/index.php?topic=122013.0 Bitcointalk] || [[Thin Client Security#Server-Trusting Clients|Server-Client]]
|-
! Gocoin
|| [http://www.assets-otc.com/gocoin Link] || [https://github.com/piotrnar/gocoin Github] || ? || [https://bitcointalk.org/index.php?topic=199306.0 Bitcointalk] || Integrated
|- 
! btcd
|| [https://github.com/btcsuite/btcd Link] || [https://github.com/btcsuite/btcd Github] || ISC || [https://github.com/btcsuite/btcd#irc-server irc] || [[Thin Client Security#Server-Trusting Clients|Server-Client]]
|}

==See Also==
* [[Software#Bitcoin_clients|List of clients]]
* [[Bitcoin Ladder]]

<references/>