BlueMeanie

jsrsasign. CAUTION: END OF SUPPORT ON 3 JUN 2026. The 'jsrsasign' (RSA-Sign JavaScript Library) is an opensource free cryptography library supporting RSA/RSAPSS/ECDSA/DSA signing/validation, ASN.1, PKCS#1/5/8 private/public key, X.509 certificate, CRL, OCSP, CMS SignedData, TimeStamp, CAdES and JSON Web Signature/Token in pure JavaScript.

supernode. BOP Bitcoin Server API - superseded versions

Kapital. a java based crypto-finance and digital currency library, server, and GUI client

truledger-android. Android port of the Truledger client

Open-Transactions-GUI. Transaction processor featuring Untraceable Digital Cash, Anonymous Numbered Accounts, Triple-Signed Receipts, Basket Currencies, and Signed XML Contracts. Also supports cheques, invoices, payment plans, markets with trades, and other instruments... it's like PGP for Money.... Uses OpenSSL and Lucre blinded tokens. ---Mac OS X, Linux, FreeBSD, Android, Windows---Native APIs for Java, Ruby, Python, PHP, Perl, C, C++, Objective-C, C#, Tcl, and LISP.

opencoinage-wallet. Ruby

Open-Transactions-old. Open-Transactions democratizes financial and monetary actions. You can use it for issuing currencies/stock, paying dividends, creating asset accounts, sending/receiving digital cash, writing/depositing cheques, cashier's cheques, creating basket currencies, trading on markets, scripting custom agreements, recurring payments, escrow, etc. Open-Transactions uses strong crypto. The balances are unchangeable (even by a malicious server.) The receipt history is destructible. The transactions are unforgeable. The cash is unlinkable. The cheques are non-repudiable. Etc.

opentransact. Proposed simple REST based standard for financial transactions

oscurrency. Affero licensed Community Currency web software derived from Insoshi