5 awesome tools for Ethereum development!

Smart contract development is still in its early stages! The tools you can use to build, monitor and visualize your smart contracts evolves every day and we picked for you the 5 tools you should keep an eye on.



Simple access to the blockchain through the browser!

MetaMask is a browser extension available for Chrome, Firefox and Opera that allows anyone to interact with the Ethereum blockchain in a simple way! From MetaMask, you can access or create a new Ethereum address, easily send transfers to other address and sign transactions to interact with Ethereum decentralized applications (DApps).

Enabling users to access and play with the blockchain in one click is awesome and MetaMask allows developers to build awesome applications like CryptoKitties, EtherDelta that rocks the blockchain!



Scalable and safe Ethereum nodes available for developers.

When starting with blockchain development, something that can be a deal breaker is getting the Blockchain on your device! Thanks to Infura, you can access any data you would normally access through the web3.js tool through their API.

infura provides to anyone, free of charge a set of nodes you can query to get block informations, transaction receipts and events. On their website they tell they handle more than 5 billions requests per day and more than 9 thousand developers.

To use Infura, you need an API key that you can get by registering on their website. You should not that some operations are not permitted as they may be too costly for them to handle. Such as new blocks and event listening.



Remix IDE

Powerful web based Ethereum IDE.

Remix is a web interface that helps you to write, deploy and interact with your smart contracts. It is available here but can also be self hosted as the project is open source.

The interface can be sometimes a little bit complicated but it’s really powerful. It also come with a code analyser that will help you write better code by raising warnings, and a debugger that let you run code step by step! As Remix runs inside your browser and connects to the Ethereum blockchain through Metamask, you can deploy directly to any Ethereum network or even your own test blockchain.



DAppBoard ethereum analaytics


The analytics platform for Ethereum’s smart contracts.

DAppBoard is a new Ethereum blockchain explorer. With this tool, you can easily see in a visual way how smart contracts and decentralized applications are doing. How many users are using a decentralized application, how much Ether is processed by the smart contract. You can also visualize global charts that compares games and tokens living on the blockchain.

DAppBoard is still in its early stage but might offer an API in the future that can be great to speed up development of Ethereum smart contracts and empower creators with bird eye view on their applications.


An easy to use IDE for Ethereum smart contract development.

Pragma is a tool really similar to the Remix IDE that lets you write, deploy and interact with your contracts directly from your browser. It is more limited than Remix but more easy to understand and use! After deploying you contract, you can even share a user interface that lets your users interact with the smart contract in a really simple way. This is one of the key feature as users don’t need to install anything (only Metamask) and you don’t have to develop any front end.

Pragma is the number on go tool for first time Ethereum developers that just want to play around and test the features of Solidity.



Are you building or using a tool you want us to feature? Let us know in the comments!

Fork and scalability

Since the recent hard fork, the difficulty and reward for mining were adjusted. On the 18 of October, the Ethereum network managed to process more than  500K transactions, around 5,000 more than its previous high, as usage has seemingly considerably increased in the previous months.

With the network now almost instantly confirming transactions in just 15 seconds, Ethereum is one of the fastest decentralized public blockchain.

What is awesome is not only the decentralized network is faster to process and verify transactions, the price also had a diet. As the network is able to clear the queue of pending transactions, the price you need to use as gas drastically decreased to $0.006 which is awesome considering an Ethereum transaction can carry any amount of money through the world.

Scalability is an important parameter when you’re developing solutions based on the blockchain and the Ethereum technology is moving in the right direction with the development of solutions able to scale as networks like banks in the future.

We definitely expect the amount of transactions to grow due to the adoption of the technology by big institutions and the release of decentralized applications (Dapp) that were founded in the recent ICOs. In the following weeks and months, working on the amount of transactions per day is an important problem and the Ethereum team and contributors should be proud of their hard work! (and hard fork)

An introduction to Plasma

As you may know, blockchains are not as effective for processing an enormous amount of transactions as a centralised system like the VISA network that can handle as more as 2,000 transactions per second. Plasma is a scalability solution for blockchains. The Plasma solution was proposed this year by Joseph Poon and Vitalik Buterin. This interesting talk explains how Plasma works and shows how smart contracts can be implemented on such a system. It also explains why not all contracts are suitable as is. Primitives for the programming language Solidity are suggested that could ease cross-chain communications in such systems.

You can find the Plasma white paper and more informations on plasma.io.

The talk was held by Christian Reitwiessner who is working at the Ethereum Fondation and is the creator of the Solidity programing language used fo developing Ethereum smart contracts. You can find the slides of the talks here and the text version of the talk here.

We are excited to see the future of the Plasma technology.


ETHWaterloo hackathon was awesome

ETHWaterloo is the world’s largest Ethereum hackathon of 2017, where over 300 developers of all backgrounds worked on projects using Ethereum that can have an impact on the world. Teams to make something great in only 36 hours by providing an abundance of hacking resources like mentors, sponsors, and software.

If you did not made it to the event you can still enjoy it thanks to the streamed video. The keynote includes some awesome speaks from the organizer and main actors of the blockchain ecosystem about what to look in the future such as the relationship between blockchains and mechanism design.

And Vitalik Butterin explaining what are the strenghts and visions about blockchains and privacy through cryptography explaining things like Plasma, Ring Signatures and Zk-SNARKS.

During the event, another talk was held about how decentralized technologies will Impact our society with the talks from Joseph Lubin (Consensys), Vitalik Buterin (Ethereum) and more:


Finally, You can find all the submissions of ETHWaterloo on DevPost here.

This hackathon is a nice proof of the blockchain and Ethereum technologies getting more and more popular among institutions, companies and developers.

How to deploy your Truffle projects

The Truffle framework is an awesome tool to help you write and test your Ethereum smart contracts. Once your code is finished and tested, it’s time to publish your smart contracts to the blockchain to interact with the live network and let people interact with your smart contract.

First of all, we will cover how to configure your Truffle project and deploy your project to the blockchain using an Ethereum client.

Then we’ll see how to publish and verify your smart contract source code on Etherscan. Etherscan is a website that let anyone explore the data of the blockchain from accounts to smart contracts and transactions.



Looking for contributors

With an always growing list of articles and still a lot of topics to cover we are looking for contributors to help EthereumDev.io grow.

If you want to write article with us, have ideas, want to share your ideas. Visit our contact page. We are open for collaboration, guest blogging and technical articles on how to use your library or service.

Next topics we are working on are:

But we are open to your ideas!


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Oracles, data outside of the blockchain

Smart contracts requirements may need to do actions depending on results of real world events and don’t have any native way to communicate with data on the internet. In the context of blockchains, the oracle pattern is the principle of linking real world data that lives outside of the blockchain to actors living inside the blockchain: mainly smart contracts that consumes data in order to decide which action to take.

We published an article that present the basics of what is an oracle and how to implement one for the Ethereum blockchain. In this article you’ll see different uses cases and where to use an Oracle. We also cover a simple oracle implementation in Solidity that mimic a basic insurance contract on the blockchain.

As Oracle can take many forms, our second article explains how to use the Oraclize platform to fetch data from the internet and use it in your smart contract. Our example shows how to fetch the current USD price of Ethereum from a web API.