1.c#
https://github.com/MetacoSA/NBitcoin
2.python
https://github.com/spesmilo/electrum
https://github.com/petertodd/python-bitcoinlib
https://github.com/richardkiss/pycoin
https://github.com/bitcoin-abe/bitcoin-abe
https://github.com/ofek/bit
https://github.com/blockchain/api-v1-client-python
https://github.com/blockstack/pybitcoin
https://github.com/hclivess/Bismuth
https://github.com/Nyancoins/blocktools
https://github.com/tenthirtyone/blocktools
https://github.com/jgarzik/python-bitcoinlib
https://github.com/tenthirtyone/blocktools
https://github.com/jtauber/blockchain
https://github.com/priestc/moneywagon
https://github.com/c00w/bitHopper
https://github.com/alecalve/python-bitcoin-blockchain-parser
