# Overview

This section contains information about some of the key tools and resources that will help developers start building applications on Celo.

## Quick Start Guides

View the [Developer Code Examples page](https://josh-8.gitbook.io/celo-docs/developer-guide/start) to get started using the Celo SDKs with guided coding exercises.

## Tools

### SDKs

* [ContractKit](https://josh-8.gitbook.io/celo-docs/developer-guide/contractkit)
  * Javascript package of Celo blockchain utilities
  * Manage connections to the Celo blockchain, accounts, send transactions, interact with smart contracts, etc.
  * A set of wrappers around the core protocol smart contracts to easily connect with contracts related to governance, validators, on-chain exchange, etc.
  * Includes [web3.js](https://web3js.readthedocs.io/en/v1.2.4/)
* [Celo Ethers.js Wrapper](https://github.com/celo-tools/celo-ethers-wrapper) (*experimental*)
  * A minimal wrapper to make [ethers.js](https://docs.ethers.io/v5/) compatible with the Celo network
* [DappKit](https://josh-8.gitbook.io/celo-docs/developer-guide/dappkit)
  * Easily connect to the [Valora](http://valoraapp.com/) wallet
  * Valora manages user account, private keys and transaction signing, so you can focus on building your dapp
  * Learn more and see the code with the [Dappkit truffle box](https://github.com/critesjosh/celo-dappkit)

### Infrastructure

* [Valora](https://valoraapp.com/) provides a clean, intuitive UI where users can send transactions and interact with smart contracts
* [Forno](https://josh-8.gitbook.io/celo-docs/developer-guide/forno)
  * Node access service so you can connect your dapp to the Celo blockchain without having to run node infrastructure
* [ODIS](https://josh-8.gitbook.io/celo-docs/developer-guide/contractkit/odis)
  * Oblivious decentralized identity service
  * Lightweight identity layer that makes it easy to send cryptocurrency to a phone number
* Blockscout block explorers
  * [Alfajores testnet](http://alfajores-blockscout.celo-testnet.org/) & [mainnet](http://explorer.celo.org/)
* [Stats.celo.org](http://stats.celo.org) to check network activity and health

#### Networks

* [Alfajores Testnet](https://josh-8.gitbook.io/celo-docs/getting-started/alfajores-testnet)
  * [Faucet](https://celo.org/developers/faucet) for free testnet CELO and cUSD
  * [Forno](https://josh-8.gitbook.io/celo-docs/developer-guide/forno) supports connections to alfajores
  * Requires Alfajores Celo wallet for mobile device testing (please request, <support@clabs.co>)
* [Baklava testnet](https://josh-8.gitbook.io/celo-docs/getting-started/baklava-testnet) for validators and testing protocol changes

### Ethereum Tools

* Similarities between Celo and Ethereum means you can use many of the most popular Ethereum developer tools.
  * Celo supports the EVM, so tools for writing smart contracts in Solidity (or any language that compiles to EVM bytecode) are compatible with Celo
  * ERC20, NFT (ERC721) and other smart contract interface standards are supported, see [Celo for Ethereum Developers](https://josh-8.gitbook.io/celo-docs/developer-guide/celo-for-eth-devs)
  * [Truffle](https://www.trufflesuite.com/)
  * [OpenZeppelin](https://openzeppelin.com/)
  * [Remix](https://remix.ethereum.org/)
  * Many more

### Ongoing projects

* [Community projects](https://josh-8.gitbook.io/celo-docs/developer-guide/celo-dapp-gallery)
* [Grant recipients](https://celo.org/experience/grants/directory)
* Python & Java SDKs
* Web wallet (like Metamask)

## Community

* Join our [Discord](https://chat.celo.org)
* [Discourse Forum](https://forum.celo.org/)