# Papr (open-source email and calendar app)

> Papr is a free, open-source email and calendar app for Windows, macOS and Linux. A fast, native RSS reader — plus an agent-facing CLI so your AI agent can read, search and triage your feeds from the shell. It has 539 GitHub stars and is released under the MIT license.

A fast, native RSS reader — plus an agent-facing CLI so your AI agent can read, search and triage your feeds from the shell. A fast, native RSS reader — and a CLI your AI agent can actually drive. Papr is two front-ends over one local database:

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/l0ng-ai/papr |
| Platforms | Linux, macOS, Windows |
| Interface | desktop GUI |
| GitHub stars | 539 |
| License | MIT (open source) |
| Replaces | n/a |
| Language | Rust |
| Website | none listed |
| Official | no |
| Category | Email & calendar |
| Latest release | v0.16.1 (Sep 23, 2026) |
| Last commit | Sep 23, 2026 |

## Install

### Homebrew (macOS)

```sh
brew install --cask l0ng-ai
```

Package page: https://formulae.brew.sh/cask/l0ng-ai

## Similar desktop apps

- [Folo](https://appsgit.com/desktop-apps/folo): Folo is an open-source AI RSS reader that brings everything you follow into one calm timeline, then helps you read it. (39,072 stars, AGPL-3.0)
- [Mailspring](https://appsgit.com/desktop-apps/mailspring): A beautiful, fast and fully open source mail client for Mac, Windows and Linux. (17,892 stars, GPL-3.0)
- [NetNewsWire](https://appsgit.com/desktop-apps/netnewswire): NetNewsWire is a free and open-source feed reader for macOS and iOS. (10,451 stars, MIT)
- [Fluent Reader](https://appsgit.com/desktop-apps/fluent-reader): Modern desktop RSS reader built with Electron, React, and Fluent UI. (9,695 stars, BSD-3-Clause)
- [MeetingBar](https://appsgit.com/desktop-apps/meetingbar): 🇺🇦 Your meetings at your fingertips in the macOS menu bar. (5,362 stars, Apache-2.0)
- [Rssguard](https://appsgit.com/desktop-apps/rssguard): Feed reader (podcast player, basic XMPP client and also Gemini protocol client) which supports RSS/ATOM/JSON and many web-based feed services. (2,792 stars, GPL-3.0)

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Canonical page: https://appsgit.com/desktop-apps/papr
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