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Reach

Reach is an open-source domain-specific language and compiler environment for developing decentralized applications for blockchain networks, including Algorand, Ethereum and Conflux.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Reach — OpenViST project profile in Developer Tools.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Choose Reach when your task is developing a blockchain dApp in its language or preparing a local environment for compiler work, and its documented network ecosystems match your project.

Who it is for

  • Developers writing decentralized applications in Reach's domain-specific language.
  • Developers preparing an environment to work on the Reach compiler.

Documented uses

  • Write blockchain dApps using Reach's DSL.
  • Prepare compiler dependencies on macOS or Ubuntu.
  • Refer to repository dependency-version information when setting up compiler development.
Before you choose

Requirements & limits

The repository is public and licensed under Apache-2.0. Compiler-development setup instructions are provided for macOS and Ubuntu.

  • Reach is a language and compiler environment, not a finished consumer-facing dApp.
  • Compiler development requires Stack, Z3, solc, goal or goal-devnet linked as goal, and mo.
  • The README cautions that its package installation commands may not install the exact dependency versions; it points to DEPS and the Reach compiler Dockerfile for version details.
  • The repository lists Algorand, Ethereum and Conflux as deployment ecosystems.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Prepare a compiler development environment on macOS

Install the documented compiler-development tools on macOS before working on the Reach compiler.

Before you start

  • macOS
  • Homebrew
  • The repository lists Stack, Z3, Solidity, and mo among compiler-development dependencies.

Steps

  1. Tap the Ethereum Homebrew repository with brew tap ethereum/ethereum.

  2. Install the listed packages with brew install haskell-stack z3 solidity.

  3. Download mo, make it executable, and move it to /usr/local/bin/ using the README commands.

  4. Consult the repository's DEPS file and hs/Dockerfile.reachc if exact dependency versions matter.

Expected outcome

The documented macOS installation commands install the listed compiler tools; the repository notes they may not select the exact required versions.

Guide limitations

  • The repository warns that these commands may install dependency versions that differ from the required versions.
  • The documented steps set up dependencies; they do not describe compiling or deploying a dApp.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
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Sources checked
15 October 2026
Original website title
reach-sh/reach-lang · Official homepage title · retained in its source language
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