Quartz Alternatives
Quartz is a Mac-exclusive Gmail client that brings AI directly to your device. It intelligently organizes your inbox by importance and drafts replies in your unique voice, all while keeping your email content private and never uploading it to external servers. Currently free in beta.
Quartz offers fully localized AI email processing, prioritizing privacy and maintaining your writing style. However, it's limited to Apple Silicon Macs, only connects with Gmail, and is still in beta. If these constraints are an issue, but you still need a personal AI assistant that keeps your data on-device, this page highlights several alternatives: local voice assistants for all applications, assistants that make real phone calls, a memory layer across AI tools, voice memos, and local-first OCR and terminal tools.
Quick Comparison
| Tool | Pricing | Rating | Best for |
|---|---|---|---|
| Quartz (the original) | Free | 3.7 | - |
| Invoko | Freemium | 4.4 | Mac users who need cross-application voice operations and prefer to keep their data off the cloud. |
| Asmi AI | Paid | 4.5 | Individuals who frequently interact with customer service or hotlines but dislike waiting. |
| MemoryOS | Freemium | 4.5 | Heavy AI users who work with multiple AI tools simultaneously and want to maintain context across them. |
| MindVoice | Free | 4.5 | Mobile users who capture ideas on the fly and prioritize transcription privacy (on-device transcription in the free tier). |
| SecureThink | Paid | 3.5 | macOS users who need to quickly convert on-screen text or images into editable text, with a strict requirement for complete offline operation. |
| Bob's CLI | Free | 4.2 | Developers seeking local AI assistance within the terminal while protecting code privacy. |
Invoko is a voice-driven AI desktop assistant for Apple Silicon Macs. Hold the Fn key and speak to summarize, rewrite, draft, or run multi-app workflows using on-screen context, without switching apps.
Why it is a strong alternative
Invoko, like Quartz, is exclusive to Apple Silicon Macs and emphasizes local processing. However, it expands AI capabilities beyond email to all applications. By holding the Fn key, you can use on-screen context to summarize, rewrite, draft, and manage multi-application workflows. It's also free during its beta phase.
Best for
Mac users who need cross-application voice operations and prefer to keep their data off the cloud.
Pick it if
You find Quartz's Gmail-only focus too limiting and want a local AI assistant that covers all your daily applications.
Pros
- Voice control that works across apps
- Uses on-screen context to reduce prompting
- Privacy-first: most data stays on the Mac
Cons
- Mac only, and Apple Silicon is required
- Intel Macs are not yet supported
- Beta status means features may change
Asmi is a personal AI assistant that places real phone calls for you, navigates IVR menus, and messages a summary when the task is done.
Why it is a strong alternative
While Quartz helps you 'write' emails, Asmi AI helps you 'make' phone calls. It can dial real numbers, navigate IVR menus, and handle waiting queues. Once complete, it sends a summary to iMessage or WhatsApp and supports over 50 languages.
Best for
Individuals who frequently interact with customer service or hotlines but dislike waiting.
Pick it if
Your primary pain point is phone calls, not your inbox, and you want AI to handle actual conversations rather than just processing text.
Pros
- Actually places phone calls instead of stopping at a script
- Handles IVR menus and hold queues that block form-based automation
- Morning check-in flow lowers friction for capturing daily tasks
Cons
- Real-world call quality still depends on the business on the other end
- Coverage and reliability by region are not detailed on the linked page
- Pricing and general availability need to be confirmed on the main site
MemoryOS is a cross-tool memory layer that stores session summaries as linked dots recallable across ChatGPT, Claude, Cursor, and other popular AI tools.
Why it is a strong alternative
Quartz's smart categorization relies on your email history, whereas MemoryOS extends the memory layer to all AI tools. It stores conversation summaries as 'points' that can be recalled across ChatGPT, Claude, Gemini, and IDEs, using a hybrid retrieval method of keywords, semantics, and knowledge graphs.
Best for
Heavy AI users who work with multiple AI tools simultaneously and want to maintain context across them.
Pick it if
You're already using several AI applications and find repeating context in each more frustrating than a cluttered email inbox.
Pros
- Unified context across ChatGPT, Claude, Gemini, and popular IDEs
- Free tier available to try the workflow
- Hybrid retrieval blends keyword, semantic, and graph expansion
Cons
- Adds another tool and account to the AI stack
- Best value depends on using several AI apps already
- Deeper features are gated behind paid tiers
MindVoice is a voice memo app that lets you capture thoughts while driving, showering, or doing school pickup. AI automatically organizes them into shopping, work, health, personal, ideas, and reminders, each with a checkbox. Unfinished items carry forward to the next day. Free tier transcribes on-device, keeping audio on your phone. Available on iOS and Android.
Why it is a strong alternative
Quartz filters important emails when you open your inbox, while MindVoice captures thoughts via voice in any scenario—driving, showering, or picking up kids. AI automatically categorizes these into areas like shopping, work, or health, and incomplete tasks automatically roll over to the next day.
Best for
Mobile users who capture ideas on the fly and prioritize transcription privacy (on-device transcription in the free tier).
Pick it if
You need a 'voice inbox' to manage your mental to-dos, rather than managing Gmail.
Pros
- Capture thoughts anywhere via voice
- AI auto-categorizes content
- Unfinished tasks auto-carry to next day
Cons
- Limited public info; cannot assess further details
- Pricing and advanced features not disclosed
SecureThink v2.0 is a native, standalone macOS app with zero dependencies. MLX runtime and models are bundled in the DMG. Optimized for Apple Silicon, it uses unified memory for fast performance on 8GB Macs. Features include local Whisper transcription, file generation (docx, pptx, xlsx), local OCR, and interactive charts.
Why it is a strong alternative
Another local AI application for Apple Silicon, SecureThink offers offline transcription and OCR. It's zero-dependency, drag-and-drop installable, and even runs on 8GB RAM Macs. It's ideal for those who want AI functionality without subscription fees and prefer to keep their data on-device.
Best for
macOS users who need to quickly convert on-screen text or images into editable text, with a strict requirement for complete offline operation.
Pick it if
Your workflow involves processing many documents or screenshots, rather than emails, but you are similarly constrained by the macOS platform.
Pros
- Local processing for data privacy
- Zero dependencies, drag-and-drop install
- Optimized for Apple Silicon, works on 8GB Macs
Cons
- macOS only
- Limited public info; features require verification
Bob's CLI is a terminal-based AI development tool that runs entirely on your own hardware, offering zero API costs and ensuring no data leaves your machine. It automatically detects local AI models, adapts to your workflow through behavioral DNA profiling, and provides autonomous code review and fixing. With conversation forking and deep dive features, plus SovereignLink for remote execution while keeping your code at home, it is free to start and sovereign by design.
Why it is a strong alternative
If you're a developer, Bob's CLI is another 'everything happens locally' option. It incurs zero API costs, keeps data on your machine, automatically detects local AI models, and adapts to your working style with behavioral DNA profiles. It also supports autonomous code review and fixes.
Best for
Developers seeking local AI assistance within the terminal while protecting code privacy.
Pick it if
Your primary efficiency bottleneck is writing code, not managing emails, and you want a local-first programming assistant.
Pros
- Zero API costs, all processing on local hardware
- Data never leaves your machine, privacy-friendly
- Automatically detects local AI models
Cons
- Requires local hardware resources, might be performance-intensive
- Code writing needs explicit approval, limiting full automation
- Public information is limited; detailed features and compatibility per official site
How to choose
Start by identifying your core pain point: If Quartz's Gmail-only focus is too restrictive and you want AI control over more applications, Invoko is a direct replacement on the same platform with a similar approach. If your challenge is phone calls, not emails, Asmi AI can navigate IVR menus and waiting queues for you. If you're already using multiple AI tools and cross-tool context is more critical than email categorization, choose MemoryOS. For those who prefer to capture ideas on the go, MindVoice's voice capture and automatic categorization are more suitable. Developers concerned with code privacy and zero API costs should consider Bob's CLI. If you need to quickly convert screen text to editable text, completely offline, SecureThink is a reliable option.
Explore More
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Exflo
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Memara
Memara offers a persistent memory service for AI agents, allowing seamless integration with tools like Claude, ChatGPT, and n8n without requiring users to build their own infrastructure. Memories are isolated by 'Space' and support semantic search across text, audio, images, and video, ensuring AI agents retain context across sessions and avoid repetitive setup.
CardVault
CardVault is an intelligent tool designed to help credit card holders maximize their card value by tracking rewards, recommending optimal spending strategies, and reminding users of unused benefits. While official details are scarce, it targets multi-card users looking to streamline their points and perks.
NoFlattery
NoFlattery is a local-first AI decision-making tool that uses multiple AI agents with differing perspectives to debate your choices, uncover blind spots, and generate a comprehensive decision record. It requires your own API keys, processes data in your browser, and offers a one-time purchase model. Ideal for critical decisions in business or career planning.
Stitch
Stitch is a free, open-source, local-first AI desktop application designed for privacy-conscious users. It integrates meeting transcription, task management, daily automations, and email/calendar handling, all processed on your machine without cloud dependency. Supporting Windows and macOS, it leverages your own AI API keys and offers MCP extensibility, making it a powerful, private productivity hub.
SecondBrain
SecondBrain acts as a crucial memory layer for your phone's AI interactions. Speak naturally, and it automatically organizes your thoughts into notes, calendar events, and reminders. Crucially, it then shares this contextual memory across popular AI platforms like Claude, ChatGPT, and Gemini, ensuring your assistants never start from scratch again. This innovative approach tackles the common frustration of re-explaining background information to different AI tools.
Open-source Alternatives
ODS: Turn Your PC/Mac/Linux into an AI Server
ODS is an open-source project designed to transform your PC, Mac, or Linux device into a fully functional AI server. It integrates LLM inference, conversational UI, voice interaction, AI agents, workflows, RAG, and image generation, making it ideal for developers and advanced users who want to run comprehensive AI capabilities locally with privacy and control over their data.
Airunner: Local Offline AI Inference Engine
Airunner is an open-source offline AI inference engine that enables image generation, real-time voice conversations, LLM chatbots, and automated workflows entirely on your local machine. No internet required, no data leaves your computer. It is perfect for privacy-conscious users and developers who want full control without cloud dependencies. The project is primarily written in Python and licensed under MIT.
basic-memory: Open-source Python tool for persistent AI memory
Basic Memory is an open-source Python tool designed to inject persistent memory into AI conversations. It eliminates the need for users to repeatedly explain project backgrounds by leveraging a local knowledge graph and semantic caching. This allows AI assistants like ChatGPT and Claude to retain crucial context across sessions, making it particularly valuable for developers and heavy AI users seeking consistent, context-aware interactions. The project is primarily written in Python and licensed under AGPL-3.0.
obsidian-yolo: Inject AI into Your Knowledge Base
obsidian-yolo is an open-source Obsidian plugin that injects AI capabilities directly into your knowledge base. It offers smart Q&A, text summarization, and multilingual conversations, all without leaving your notes. Built with TypeScript, it is highly customizable and ideal for users looking to integrate AI into their note-taking workflow. The project is licensed under MIT and has 1142 GitHub stars as of collection time.
lotti: Private journaling with local AI and encrypted sync
lotti is an open-source private journaling app with a built-in, locally-run AI agent. It records activities, thoughts, and tasks, and offers proactive suggestions. All data processing happens on the device, and sync across devices is end-to-end encrypted via the Matrix protocol, ensuring strong privacy. It is written in Dart and licensed under GPL-3.0. As of collection, it has 1129 stars on GitHub.
rowboat: Desktop AI Coworker Indexing Communications into a Knowledge Graph
Rowboat is a desktop AI coworker that indexes email, meetings, Slack, and chats into a living knowledge graph and acts on it through built-in surfaces. The project is developed in TypeScript, licensed under Apache-2.0, and has 16,711 stars on GitHub as of collection time.
