---
id: dev-tools-ide
title: Scilla IDEs
keywords:
  - ide
  - neo-savant
  - scilla
  - smart contract
  - installation
  - vscode extension
  - emacs
  - zilliqa
description: Zilliqa Online Smart Contract (Scilla) IDE
---

---

import useBaseUrl from "@docusaurus/useBaseUrl";

## Neo-Savant @ [https://ide.zilliqa.com](https://ide.zilliqa.com/)

<img alt="Faucet" src={useBaseUrl("img/dev/tools/neosavant.png")} />

A fully-fledged IDE used for writing, testing and deploying Scilla smart contracts painlessly. It can be tried out at https://ide.zilliqa.com/.

Neo-Savant helps Scilla developers to create and deploy Smart Contracts using an automated development environment, in-browser, with quick and intuitive controls.

### Features

- Intuitive UI for easy deployment/contract invocation.
- Multiple networks supported: Testnet, Mainnet and a Simulated Environment where you can test out contracts without spending $ZIL
- Account management using Keystore, Ledger or ZilPay.
- Simple, persistent file manager for managing your contracts that allows for renaming/deletion.
- Possibility to import already deployed contracts and call their transitions.
- Support for event in contracts, with automatic notifications in the UI.
- Support for arbitrary gas price/gas limit in deployment/calls.

## VSCode Extension by [as1ndu](https://marketplace.visualstudio.com/publishers/as1ndu)

### Installation

**Method 1:** Install directly from [VS Marketplace](https://marketplace.visualstudio.com/items?itemName=as1ndu.scilla)

- Launch VS Code Quick Open (Ctrl+P),
- Use the following command

```
ext install as1ndu.scilla
```

**Method 2:** Manual install using VS Code extension package

- Download the `.visx` file from the [releases tab](https://github.com/as1ndu/scilla/releases)
- Using the Install from VSIX command in the Extensions view command drop-down,: Install from VSIX command in the Command Palette, point to the `.vsix` file.

### Features

- Syntax highlighting
- Code Snippets
- Debugging (Error & Warnings)
- Cash Flow Analysis (`ctrl + P` then `>` type `scilla` then select `Scilla: Cashflow Analyser`)
- Gas Usage Reports (Enable it in extension settings)
- Type info for variables (Hover over dotted lines to see they type information of a variable)
- Configuration via Vscode's UI

## Emacs

An emacs major mode for editing Scilla contracts is [provided](https://github.com/Zilliqa/scilla/blob/master/misc/emacs-mode/scilla-mode.el).
Add the following line to your `.emacs` file to load this mode for files ending with `.scilla` and `.scillib`.
For enabling flycheck mode for Scilla (see [INSTALL.md](https://github.com/Zilliqa/scilla/blob/master/INSTALL.md)). When `scilla-checker` is available,
type reporting is also supported. The key binding `C-c C-t` will print the type of the variable on which
the cursor currently is.

```
;; For enabling flycheck mode for Scilla.
(setq scilla-root "/path/to/scilla/root")
;; Scilla mode
(load-file "/path/to/scilla-mode.el")
```