Best Quartz Alternatives in 2026

Quartz — AI email client built for focus. Runs locally on your Mac. Here are 12 alternatives in Developer Tools, ranked by community upvotes.

Updated June 2026 · Data from Product Hunt launches

GPT‑5.3‑Codex‑Spark

An ultra-fast model for real-time coding in Codex

291

💻Developer ToolsFeb 13

vs Quartz

Spark 2.0

A streaming engine for huge 3D Gaussian worlds

🤖AI AssistantsApr 16

vs Quartz

Genspark for Excel

AI assistant for Excel formulas, charts, insights.

🤖AI AssistantsApr 25

vs Quartz

Flip Spark

Flip Spark — Memory Card Game for Kids

🤖AI AssistantsApr 26

vs Quartz

RHRSpark

Your resting heart rate. Raw. Beautiful. On your wrist.

🎨AI Image & DesignApr 26

vs Quartz

Replyless - Best Superhuman Alternative

AI Email app that sends daily email briefs on Telegram

🤖AI AssistantsApr 27

vs Quartz

Genspark for Word

Draft, edit, and research inside Microsoft Word with AI

🤖AI AssistantsMay 1

vs Quartz

Genspark Skills

Build reusable AI tools for any repeatable task

⚡ProductivityJun 11

vs Quartz

Rork Max

Best AI for iOS apps. Website that replaces Xcode

1476

💻Developer ToolsFeb 21

vs Quartz

Kilo Code Reviewer

Automatic AI-powered code reviews the moment you open a PR

788

💻Developer ToolsJan 27

vs Quartz

Jupid

File your taxes with Claude Code

674

💻Developer ToolsMar 31

vs Quartz

Base44 Backend Platform

The Backend for the age of AI

674

💻Developer ToolsFeb 16

vs Quartz