# Install harper with npm

Harper is an open-source Node.js performance platform that unifies database, cache, application, and messaging layers into one in-memory process. Version 5.1.23 via npm; verified 2026-07-22. Also installable with nix: nix profile install nixpkgs#harper.

## Install

```sh
sudo av install npm:harper
```

Additional install commands:

### Portable and language managers

- npm (100%):

```sh
npm install -g harper
```

  Evidence: local npm package metadata

## Package facts

- **Package key:** npm:harper
- **Package manager:** npm
- **Version:** 5.1.23
- **Source summary:** Harper is an open-source Node.js performance platform that unifies database, cache, application, and messaging layers into one in-memory process.
- **Homepage:** <https://harper.fast>
- **Last updated:** 2026-07-22T23:32:19.275Z
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- harper (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 5.1.23

## Security Notes

No matching local secret-handling manifest was found for harper. Nucleus package metadata is still published here so future coverage has a stable package URL.


## Other Package-Manager Records

- Nix - harper: normalized package name match | nixpkgs package indexes: pkgs/by-name/ha/harper/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- apk - harper - 2.1.0-r0: normalized package name match | Alpine Linux edge package indexes: harper from https://dl-cdn.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz | English grammar checker | https://github.com/Automattic/harper
- pacman - harper - 2.7.0-1: normalized package name match | Arch Linux sync databases: harper from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | The Grammar Checker for Developers | https://github.com/Automattic/harper
- Scoop - main/harper: normalized package name match | Scoop official bucket manifest trees: bucket/harper.json from https://api.github.com/repos/ScoopInstaller/Main/git/trees/master?recursive=1
- winget - Automattic.harper-ls: normalized package name match | Windows Package Manager source index: Automattic.harper-ls from https://cdn.winget.microsoft.com/cache/source.msix


## Related links

- [harper](https://pkg.so/pkg/brew/harper/) - Same normalized package name exists in another local package ecosystem.

## Sources

- pkg.so package database
- pkgdb category and tag curation
- external package-manager database matches
- cross-ecosystem install command graph