Polkadot C++ API

Polkadot Substrate C++ API
С++ API for Polkadot. Work in Progress. Web3 Foundation Grants — Wave Two Recipients.
  • Polkadot
  • Project
  • API
  • Framework
  • Code
  • C++
  • Substrate Framework

Blocknative

Help your users get onboard.
We’ve built an embeddable javascript widget that translates complex blockchain tech into simple, human terms for end-users. Each component was designed to add clarity and boost confidence in every user — no matter how new they are to the space.
  • General
  • Project
  • UI/UX
  • Framework
  • API
  • Javascript
  • DApps
  • Analytics
  • Wallets

eth.events

Access Ethereum data as SQL, ElasticSearch and GraphQL
Reach your goals with blockchain data much faster, cheaper and with maximum flexibility. No need to run a full archive node or your own database if you just want to use blockchain data .
  • Ethereum
  • Project
  • Data
  • API
  • Network
  • Testnet
  • Dev tools
  • Oracle

Provable (oraclize)

Blockchain oracle for modern DApps.
Oraclize is the leading oracle service for smart contracts and blockchain applications, serving thousands of requests every day on platforms like Ethereum , Rootstock , R3 Corda , Hyperledger Fabric and EOS .
  • General
  • Multi Chain
  • Platform agnostic
  • Project
  • Oracle
  • Data
  • Dev tools
  • API
  • Smart Contract
  • Solidity

Delphi System

The oracle Platform
For smart contracts, the oracle is the source of truth. Use our frameworks to decentralize this power.
  • Ethereum
  • Project
  • Oracle
  • Data
  • API
  • Dev tools
  • Earn

Contribute Code

Help build Frontend, Backend and APIs.
We need your help in fixing issues, testing in multiple browsers or take PR if you have new features to add.   
  • Guide
  • Code
  • API
  • Data
  • Documentation
  • Testing
  • Minds

Wyre

World-class tools for blockchain developers, financial services and protocols.
We're serious about helping the crypto community and have been active since 2013. Focusing on compliance, licensing and legal fees shouldn’t be what creators are doing. They should be creating.
  • Ethereum
  • Project
  • DeFi
  • Payments
  • Exchanges
  • Framework
  • Dev tools
  • Trading
  • API
  • Liquidity
  • KYC
  • UI/UX

Mythx

Security analysis platform for Ethereum smart contracts. Direct integration with all major development tools as well as end-user API.
MythX is a smart contract security API that brings advanced security analysis directly into development environments and build pipelines. It detects many common Solidity vulnerabilities and EVM bytecode vulnerabilities. Anyone can use MythX to build purpose-built Ethereum security tools. End users
  • Ethereum
  • Project
  • Security
  • Smart Contract
  • Dev tools
  • API
  • Code
  • Earn

Ethereum PHP

PHP interface to Ethereum JSON-RPC API.
A php interface for interacting with the Ethereum blockchain and ecosystem. Native ABI parsing and smart contract interactions.
  • Ethereum
  • Project
  • Framework
  • API
  • PHP
  • Framework

Etherscan

Etherscan is a Block Explorer and Analytics Platform for Ethereum
  • Ethereum
  • Project
  • Explorer
  • Analytics
  • API
  • Data
  • IDEs
  • Dev tools
  • Exchanges

Aragon API

Easily interact with your dapp's state
Standard set of APIs and specifications used to interact with aragonOS-powered contracts by handling transaction pathing, upgradeability, and contract state without depending of a centralized service.
  • Ethereum
  • Multi Chain
  • Polkadot
  • Project
  • API
  • Javascript
  • Code
  • DApps
  • Framework
  • React

Oracle mining for Tellor

Help build mining and help mining.
Contribute to our future plans to implement a GPU miner(not built in python), provide a way to pay in Ether for data, and improve our reward/incentives mechanism. @todo Get more detail about mining. 
  • Guide
  • Mining
  • Mining
  • POS
  • Oracle
  • Data
  • API
  • Earn
  • Tellor

Tellor

The Decentralized Oracle
The Standard Oracle For Decentralized Finance. An easy to implement solution to get high value data into your smart contracts. Get API Data Into Your Ethereum Contracts. By providing the adaptive infrastructure for smart contracts to query, on demand, off-chain data on-chain by properly
  • Ethereum
  • General
  • Project
  • Oracle
  • Data
  • API
  • Mining
  • DeFi
  • Earn
  • POS

Realitio

Crowd-sourced verification for smart contract oracles.
Realitio provides a flexible mechanism for verifying real-world events for smart contracts.
  • Ethereum
  • Project
  • Oracle
  • Data
  • API
  • Smart Contract
  • Framework

Atra Blockchain

Drag and drop IDE to build Ethereum Dapps
The easiest way to build an Ethereum application. Create a decentralized application in minutes. Start building today. No code required. Features No Developer Required : Create an end-to-end application with our interface No Cryptocurrency Required : We manage transactions for you Rapidly Prototype
  • Ethereum
  • Project
  • IDEs
  • Smart Contract
  • Framework
  • Oracle
  • UI/UX
  • Data
  • API
  • Infrastructure
  • Dev tools
  • Tools & Utilities

Create Oracles on zap

Create Oracles and get paid
Once you’ve entered into our ecosystem, you can manage everything. Anyone with a smartphone and an internet connection can participate in Zap's global platform.
  • Guide
  • Oracle
  • Earn
  • Network
  • Mining
  • Data
  • API
  • Zap

Zap

Oracles That Bring Data to Smart Contracts
The Zap platform allows users to create, publish and subscribe to smart contract and Decentralized Application compatible data feeds. Data Speculators can also bond zap for dots and choose to redeem dots.
  • Ethereum
  • Project
  • Oracle
  • API
  • Data
  • Smart Contract
  • Earn
  • Trading

ChainLink

Your smart contracts connected to real world data, events and payments.
ChainLink is blockchain middleware that allows smart contracts to access key off-chain resources like data feeds, various web APIs, and traditional bank account payments. By providing smart contracts secure access to these key resources, ChainLink allows them to mimic real world agreements that
  • Bitcoin
  • EOS
  • Ethereum
  • Platform agnostic
  • Polkadot
  • Project
  • Oracle
  • Smart Contract
  • Oracle
  • API
  • Earn
  • Off-Chain computing
  • Scaling
  • Sidechains

Witnet

A Decentralized Oracle Network connecting smart contracts to the rest of the world.
Witnet is a decentralized oracle network that connects smart contracts to the outer world. It aims to allow any piece of software to retrieve the contents published at any web address with complete and verifiable proof of its integrity and without blindly trusting any third party.
  • Ethereum
  • Platform agnostic
  • Project
  • Oracle
  • Smart Contract
  • Data
  • API

Kaleido

An all-in-one SaaS blockchain business cloud.
Kaleido, a ConsenSys company, is dedicated to making blockchain radically simple for organizations to adopt so that our societies will fully benefit from decentralized models and technologies.
  • Ethereum
  • Project
  • Infrastructure
  • Enterprise
  • Marketplaces
  • Tools & Utilities
  • API

Infura

Access Ethereum via REST API
Our easy to use API and developer tools provide secure, reliable, and scalable access to Ethereum and IPFS. We provide the infrastructure for your decentralized applications so you can focus on the features.
  • Ethereum
  • Project
  • Infrastructure
  • API
  • Network
  • Dev tools
  • Data

Rhombus Network

Connect your smart contract with real-world data.
Rhombus is the oracle solution for your smart contract We provide the most reliable, credible, and efficient oracle platform on the planet. Access over five trillion real-world data points, custom off-chain computing, and the best security the industry has to offer.
  • Ethereum
  • Project
  • Oracle
  • Dev tools
  • Data
  • API
  • Infrastructure
  • Framework

3Box

Social profiles for web3 applications.
Create a social profile for your Ethereum account to start building trust, connection, and community. All of your information in your control Create a profile to help others discover and recognize you. Sign in to apps by sharing your profile with one click. Collect data from apps to build a strong
  • Ethereum
  • Project
  • Social
  • Community
  • API
  • Network
  • UI/UX

Set Protocol

A platform to create, manage, and obtain baskets of tokenized assets.
Use multiple tokens as one. Whether you're creating the next S&P 500, packing tokens for efficient distribution, or creating item bundles in your game, our developer tools give you the flexibility to handle baskets of tokens the way you want.
  • Ethereum
  • Project
  • Derivatives
  • Infrastructure
  • Protocols
  • Trading
  • Documentation
  • Marketplaces
  • API

LoanScan

Ethereum loan explorer tracking loans on MakerDAO, Compound Finance, and Dharma
LoanScan is an analytics platform for loans routed through decentralized lending protocols (open protocols) Compound, Dharma and Maker DAO. The platform provides insights into origination volumes, interest rates, repayments, collateralization levels, etc. Both market aggregate and loan level
  • Ethereum
  • Project
  • Analytics
  • Explorer
  • UI/UX
  • Loans
  • Borrow
  • Tools & Utilities
  • API

Alethio

Blockchain data, analytics, and visualization platform with Core API product & analytics tool suite
Make Ethereum data work for you Alethio is a powerful blockchain data, analytics & visualization platform. We recently released our Core API product & Alethio Analytics tool suite for Ethereum!
  • Ethereum
  • Project
  • Analytics
  • API
  • UI/UX
  • Tools & Utilities
  • Explorer
  • Infrastructure
  • Academic
  • Data