user14586: Just curious how many complete implementations of the bip32 standard exist.

user18196: I know of these three:

The Gem API enables wallets to be made using their BIP32 compliant API. 
There is also the BitGo service that uses BIP32 Multisig wallets. 
BitStash hardware wallets also are BIP 32 compliant. 


user2116: there is a list of implementations in the bip32 documentation:

Two Python implementations exist:
PyCoin (https://github.com/richardkiss/pycoin) is a suite of utilities
  for dealing with Bitcoin that includes BIP0032 wallet features.
  BIP32Utils (https://github.com/jmcorgan/bip32utils) is a library and
  command line interface specifically focused on BIP0032 wallets and
  scripting.
A Java implementation is available at
  https://github.com/bitsofproof/supernode/blob/1.1/api/src/main/java/com/bitsofproof/supernode/api/ExtendedKey.java
A C++ implementation is available at
  https://github.com/CodeShark/CoinClasses/tree/master/tests/hdwallets
An Objective-C implementation is available at
  https://github.com/oleganza/CoreBitcoin/blob/master/CoreBitcoin/BTCKeychain.h
A Ruby implementation is available at
  https://github.com/GemHQ/money-tree
Two Go implementations exist:
hdkeychain
  (https://github.com/conformal/btcutil/tree/master/hdkeychain) provides
  an API for bitcoin hierarchical deterministic extended keys (BIP0032).
  Go HD Wallet (https://github.com/WeMeetAgain/go-hdwallet).
Two JavaScript implementations exist: available at
  https://github.com/sarchar/brainwallet.github.com/tree/bip32 and
  https://github.com/bitpay/bitcore
A PHP implemetation is available at
  https://github.com/Bit-Wasp/bitcoin-lib-php
A C# implementation is available at
  https://github.com/NicolasDorier/NBitcoin (ExtKey, ExtPubKey)
A Haskell implementation is available at
  https://github.com/haskoin/haskoin together with a CLI interface at
  https://github.com/np/hx

you should check the documentation rather than relying on my copy here though, since my copy will go out of date over time

14586: <p>Just curious how many complete implementations of the bip32 standard exist.</p>
 18196: <p>I know of these three:</p>

<ul>
<li>The <a href="https://gem.co/" rel="nofollow">Gem API</a> enables wallets to be made using their BIP32 compliant API. </li>
<li>There is also the <a href="https://www.bitgo.com/" rel="nofollow">BitGo</a> service that uses BIP32 Multisig wallets. </li>
<li><a href="http://www.bitstash.com/" rel="nofollow">BitStash</a> hardware wallets also are BIP 32 compliant. </li>
</ul>
 2116: <p>there is a list of implementations <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#implementations" rel="nofollow">in the bip32 documentation</a>:</p>

<blockquote>
  <p>Two Python implementations exist:</p>
  
  <p>PyCoin (<a href="https://github.com/richardkiss/pycoin" rel="nofollow">https://github.com/richardkiss/pycoin</a>) is a suite of utilities
  for dealing with Bitcoin that includes BIP0032 wallet features.
  BIP32Utils (<a href="https://github.com/jmcorgan/bip32utils" rel="nofollow">https://github.com/jmcorgan/bip32utils</a>) is a library and
  command line interface specifically focused on BIP0032 wallets and
  scripting.</p>
  
  <p>A Java implementation is available at
  <a href="https://github.com/bitsofproof/supernode/blob/1.1/api/src/main/java/com/bitsofproof/supernode/api/ExtendedKey.java" rel="nofollow">https://github.com/bitsofproof/supernode/blob/1.1/api/src/main/java/com/bitsofproof/supernode/api/ExtendedKey.java</a></p>
  
  <p>A C++ implementation is available at
  <a href="https://github.com/CodeShark/CoinClasses/tree/master/tests/hdwallets" rel="nofollow">https://github.com/CodeShark/CoinClasses/tree/master/tests/hdwallets</a></p>
  
  <p>An Objective-C implementation is available at
  <a href="https://github.com/oleganza/CoreBitcoin/blob/master/CoreBitcoin/BTCKeychain.h" rel="nofollow">https://github.com/oleganza/CoreBitcoin/blob/master/CoreBitcoin/BTCKeychain.h</a></p>
  
  <p>A Ruby implementation is available at
  <a href="https://github.com/GemHQ/money-tree" rel="nofollow">https://github.com/GemHQ/money-tree</a></p>
  
  <p>Two Go implementations exist:</p>
  
  <p>hdkeychain
  (<a href="https://github.com/conformal/btcutil/tree/master/hdkeychain" rel="nofollow">https://github.com/conformal/btcutil/tree/master/hdkeychain</a>) provides
  an API for bitcoin hierarchical deterministic extended keys (BIP0032).
  Go HD Wallet (<a href="https://github.com/WeMeetAgain/go-hdwallet" rel="nofollow">https://github.com/WeMeetAgain/go-hdwallet</a>).</p>
  
  <p>Two JavaScript implementations exist: available at
  <a href="https://github.com/sarchar/brainwallet.github.com/tree/bip32" rel="nofollow">https://github.com/sarchar/brainwallet.github.com/tree/bip32</a> and
  <a href="https://github.com/bitpay/bitcore" rel="nofollow">https://github.com/bitpay/bitcore</a></p>
  
  <p>A PHP implemetation is available at
  <a href="https://github.com/Bit-Wasp/bitcoin-lib-php" rel="nofollow">https://github.com/Bit-Wasp/bitcoin-lib-php</a></p>
  
  <p>A C# implementation is available at
  <a href="https://github.com/NicolasDorier/NBitcoin" rel="nofollow">https://github.com/NicolasDorier/NBitcoin</a> (ExtKey, ExtPubKey)</p>
  
  <p>A Haskell implementation is available at
  <a href="https://github.com/haskoin/haskoin" rel="nofollow">https://github.com/haskoin/haskoin</a> together with a CLI interface at
  <a href="https://github.com/np/hx" rel="nofollow">https://github.com/np/hx</a></p>
</blockquote>

<p><strong>you should <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#implementations" rel="nofollow">check the documentation</a> rather than relying on my copy here though, since my copy will go out of date over time</strong></p>
