Installation

Chapar is released for macOS (Apple Silicon and Intel), Linux (amd64 and arm64) and Windows (amd64). Every release is published on the GitHub Releases page.

Platform	File	Notes
macOS, Apple Silicon	`chapar-macos-<version>-arm64.dmg`	Signed and notarized
macOS, Intel	`chapar-macos-<version>-amd64.dmg`	Signed and notarized
Linux, x86-64	`chapar-linux-<version>-amd64.tar.xz`
Linux, ARM64	`chapar-linux-<version>-arm64.tar.xz`
Windows, x86-64	`chapar-windows-<version>-amd64.zip`	Windows on ARM runs it through emulation

macOS

Homebrew is the easiest way to install and update Chapar:

brew tap chapar-rest/chapar
brew install --cask chapar

To update to the latest release:

brew upgrade --cask chapar

Download the DMG for your Mac from the latest release (arm64 for Apple Silicon, amd64 for Intel), open it and drag Chapar into Applications.

Chapar is also available on the Mac App Store.

The App Store version runs in a sandbox, so it keeps its data in a different folder. If you already used the downloaded version, copy your data into the sandbox:

cp -r $HOME/.config/chapar $HOME/Library/Containers/rest.chapar.app/Data/.config

or link the two folders so both versions share the same data:

ln -s $HOME/.config/chapar $HOME/Library/Containers/rest.chapar.app/Data/.config

Windows

Download chapar-windows-<version>-amd64.zip from the latest release, extract it and run chapar.exe.

There is no 32-bit Windows build. The GPU library Chapar draws with (wgpu) has no 32-bit Windows version.

Linux

Download the tar.xz archive for your CPU from the latest release and extract it:

tar -xJf chapar-linux-v0.9.0-amd64.tar.xz
./chapar

Arch Linux (AUR)

On Arch-based distributions you can install the chapar-bin package with your AUR helper:

yay -S chapar-bin

The AUR package is maintained by a community contributor and may lag behind the latest release.

Build from source

Chapar is written in Go. Its UI toolkit, Yoga, renders through GLFW and WebGPU, so building needs CGO and a C compiler:

OS	What to install
macOS	Xcode Command Line Tools: `xcode-select --install`
Debian / Ubuntu	`sudo apt install gcc libx11-dev libxrandr-dev libxinerama-dev libxcursor-dev libxi-dev libxxf86vm-dev libgl1-mesa-dev`
Windows	A MinGW-w64 GCC on your `PATH`, for example from MSYS2

Then clone and build:

git clone https://github.com/chapar-rest/chapar.git
cd chapar
go build -o chapar .
./chapar

Dependencies are vendored. If you change them, run make vendor instead of go mod vendor: the script also copies C sources that go mod vendor leaves out.

To build the same packages the releases ship (DMG, tar.xz, zip), install the Yoga CLI with make install_deps and run yoga package:

yoga package -os darwin -arch arm64 -version v0.9.0   # dist/darwin/*.dmg
yoga package -os linux -version v0.9.0                # dist/linux/*.tar.xz
yoga package -os windows -version v0.9.0              # dist/windows/*.zip

Next steps

Quick Start: send your first requests to the free mock server.
Python Scripting: turn on scripting if you want pre and post-request scripts. It needs Docker.

Quick Start