Web3j

The Web3j SDK provides a seamless experience for development on leading blockchain platforms

18 Alternatives To Web3j

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BigchainDB

The scalable blockchain database.
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BlockCypher

AWS for Block Chains

Blockchain Startups Map

Map & searchable database of 430 companies in 64 categories.

Guava

Google core libraries for Java 6+.
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Hyperledger

Hyperledger is a multi-project open source collaborative effort hosted by The Linux Foundation, created to advance cross-industry blockchain technologies.

IPFS

IPFS is the permanent web. A new peer-to-peer hypermedia protocol.

Java

A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible

Litecoin

Litecoin is a peer-to-peer Internet currency that enables instant payments to anyone in the world.

MultiChain

Blockchain and Blockchain Platforms
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Openchain

Openchain is an open source, enterprise-ready Blockchain technology platform.
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Opporty

Service marketplace for small businesses on the blockchain
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Oracle Blockchain

Oracle offers an easier way to adopt blockchain and transform your enterprise with the industry’s most comprehensive and enterprise-grade blockchain platform.
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PayPal

PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller

Ripple

Ripple connects banks, payment providers, digital asset exchanges and corporates via RippleNet to provide one frictionless experience to send money globally

RxJava

RxJava – Reactive Extensions for the JVM is a library for composing asynchronous and event-based programs using observable sequences.
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SAP Leonardo

With SAP Leonardo, you can combine intelligent technologies – like the IoT, AI, and machine learning – and innovate with them on an open, extensible cloud platform.
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Stripe

Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.

Thymeleaf

Thymeleaf is a modern server-side Java template engine for both web and standalone environments.