Reply4 AlternativesAI Writing Tools and other similar apps like Reply4

Reply4 is described as 'Helps you generate fast, polished email replies with AI. Perfect for support, sales, and busy teams who want to save hours on writing' and is a AI Writing tool in the ai tools & services category. There are more than 10 alternatives to Reply4, not only websites but also apps for a variety of platforms, including Android, iPhone, iPad and Mac apps. The best Reply4 alternative is ChatGPT, which is free. Other great sites and apps similar to Reply4 are Mistral Le Chat, GPT4ALL, DeepSeek and Jan.ai.

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Reply4 helps you generate fast, polished email replies with AI. Perfect for support, sales, and busy teams who want to save...

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Reply4 alternatives page was last updated Jun 24, 2025
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  1. ChatGPT icon

    ChatGPT

     380 likes
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    AI language model perfect for generating interactive human-like text in various styles. Built on architecture allowing real-time natural language generation, ideal for applications demanding fluent, relevant output over diverse topics broadened by extensive training data.

    328 ChatGPT alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Google Chrome
    ChatGPT screenshot 1

    Properties

    1.  Distraction-free
    2.  Support for Themes

    Features

    1.  AI Writing
    2.  AI Chatbot
    3.  AI-Powered
    4.  Chat Bot
    5.  Web-Based
    6.  Ad-free
    7.  Dark Mode
    8.  No Coding Required
    9.  Text to Image Generation
    10.  No registration required
    11.  Built-in search engine
    12.  Voice Chat

    ChatGPT VS Reply4

     

    • ChatGPT is the most popular Web-based, Windows, Android & Mac alternative to Reply4.

    • ChatGPT is the most popular free alternative to Reply4.

    • ChatGPT is Freemium and ProprietaryReply4 is Paid and Proprietary
  2. Mistral Le Chat icon

    Mistral Le Chat

     67 likes
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    Explore Mistral’s conversational tech with educational, fun interactivity. Customizable, unbiased models excel in performance benchmarks, supporting flexible deployment.

    115 Mistral Le Chat alternatives

    License model

    • Free Personal • Proprietary

    Application types

    Country of Origin

    • FR flagFrance
    • European Union flagEU

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Software as a Service (SaaS)
    Mistral Le Chat screenshot 1

    Mistral Le Chat Features

    1.  AI Chatbot
    2.  AI Writing
    3.  Ad-free
    4.  AI-Powered
    5.  Dark Mode
    6.  Text to Speech
    7.  Two-factor Authentication
    8.  Text to Image Generation

    Mistral Le Chat VS Reply4

     

    • Mistral Le Chat is the most popular SaaS & Self-Hosted alternative to Reply4.

    • Mistral Le Chat is Free Personal and ProprietaryReply4 is Paid and Proprietary
  4. GPT4ALL icon

    GPT4ALL

     115 likes
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    An ecosystem of open-source chatbots trained on a massive collections of clean assistant data including code, stories and dialogue.

    153 GPT4ALL alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Flathub
    GPT4ALL screenshot 1

    Properties

    1.  Privacy focused
    2.  Distraction-free
    3.  Lightweight

    Features

    1.  AI Chatbot
    2.  AI Writing
    3.  Ad-free
    4.  No Coding Required
    5.  Dark Mode
    6.  Works Offline
    7.  No Tracking
    8.  Text to Image Generation
    9.  No registration required
    10.  Marketing Automation
    11.  Chat with documents
    12.  Offline

    GPT4ALL VS Reply4

     

    • GPT4ALL is the most popular Linux alternative to Reply4.

    • GPT4ALL is the most popular Open Source alternative to Reply4.

    • GPT4ALL is Free and Open SourceReply4 is Paid and Proprietary
    • GPT4ALL is Privacy focusedReply4 is not according to our users
  5. Ad
    Screenshot
    ChatSonic icon
    ChatSonic

    Combining Google's knowledge graph, ChatSonic delivers real-time data, voice interaction, AI-produced visual content, personalized avatars, and API for services. It revisits past dialogs for informed responses and integrates ...

    https://writesonic.com
    Learn More
  6. DeepSeek icon

    DeepSeek

     61 likes
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    DeepSeek is an advanced AI designed to assist with answering questions, solving problems, and providing insights through natural, conversational interactions.

    74 DeepSeek alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • CN flagChina

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    DeepSeek screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  Natural Language Processing
    2.  AI Writing
    3.  Ad-free
    4.  Dark Mode
    5.  Spell Checking
    6.  AI-Powered
    7.  No Coding Required
    8.  Live Preview

    DeepSeek VS Reply4

     
  7. Jan.ai icon

    Jan.ai

     60 likes
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    Jan is an open source alternative to ChatGPT that runs 100% offline on your computer.

    131 Jan.ai alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • SG flagSingapore

    Platforms

    • Mac
    • Windows
    • Linux
    Jan.ai screenshot 1

    Properties

    1.  Privacy focused
    2.  Customizable

    Features

    1.  Works Offline
    2.  Ad-free
    3.  Local Storage
    4.  Offline
    5.  Dark Mode

    Jan.ai VS Reply4

     
  8. Google Gemini icon

    Google Gemini

     110 likes
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    AI assistant offers writing, planning, learning support, generating images from text, and transforming text to speech. Utilizes large language models and syncs across devices without requiring coding skills. Supports dark mode and ad-free experience.

    236 Google Gemini alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    • Android
    • iPhone
    • Google Docs
    • Gmail
    • Android Wear
    Google Gemini screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  AI Chatbot
    2.  AI Writing
    3.  AI-Powered
    4.  Ad-free
    5.  Text to Speech
    6.  Spell Checking
    7.  No Coding Required
    8.  Dark Mode
    9.  Text to Image Generation
    10.  Live Preview
    11.  Cloud Sync
    12.  Marketing Automation

    Google Gemini VS Reply4

     
  10. Microsoft Copilot icon

    Microsoft Copilot

     75 likes
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    Microsoft Copilot (previously know as Bing Chat) is a new Chatbot feature for Microsoft Bing which aim to revolutionize the search engine experience through AI-powered technology.

    169 Microsoft Copilot alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Mac
    • Windows
    Microsoft Copilot screenshot 1

    Top Microsoft Copilot Features

    1.  AI Chatbot
    2.  AI Writing
    3.  Text to Image Generation
    4.  Ad-free
    5.  Image generator
    6.  Chat Bot
    7.  No registration required
    8.  Dark Mode
    9.  Chat history
    10.  AI-Powered
    11.  Text to Speech

    Microsoft Copilot VS Reply4

     
  11. Claude icon

    Claude

     63 likes
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    Claude is a next-generation AI assistant based on Anthropic’s research into training helpful, honest, and harmless AI systems. Accessible through chat interface and API in our developer console, Claude is capable of a wide variety of conversational and text processing tasks...

    180 Claude alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    • Software as a Service (SaaS)
    • Google Sheets
    • iPad
    Claude screenshot 1

    Claude Features

    1.  AI Chatbot
    2.  AI-Powered
    3.  AI Writing
    4.  Chat Bot
    5. Slack icon  Slack integration

    Claude VS Reply4

     
  12. Secret Llama icon

    Secret Llama

     47 likes
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    Fully private LLM chatbot that runs entirely with a browser with no server needed. Supports Mistral and LLama 3.

    107 Secret Llama alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • International

    Platforms

    • Online
    • Self-Hosted
    Secret Llama screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  AI Chatbot
    2.  No registration required
    3.  Ad-free
    4.  No Coding Required
    5.  Works Offline
    6.  WebGPU
    7.  AI-Powered

    Secret Llama VS Reply4

     
  13. Poe icon

    Poe

     63 likes
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    Poe lets you ask questions, get instant answers, and have back-and-forth conversations with AI. Includes Claude from Anthropic and a variety of other bots.

    259 Poe alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Windows
    Poe screenshot 1
    Poe screenshot 2
    Poe screenshot 3

    Properties

    1.  Lightweight

    Features

    1.  AI Chatbot
    2.  AI-Powered
    3.  AI Writing
    4.  Ad-free
    5.  No Coding Required
    6.  Dark Mode
    7.  Text to Image Generation
    8.  Marketing Automation
    9.  Chatbot Builder
    10.  Syntax Highlighting
    11.  Cloud Sync
    12.  Support for MarkDown

    Poe VS Reply4

     
  14. LibreChat icon

    LibreChat

     34 likes
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    LibreChat is a free, open source AI chat platform. This Web UI offers vast customization, supporting numerous AI providers, services, and integrations. Serves all AI Conversations in one place with a familiar interface, innovative enhancements, for as many users as you need.

    74 LibreChat alternatives

    License model

    • Free • Open Source

    Application type

    Platforms

    • Self-Hosted
    • Docker
    • npm
    LibreChat screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Dark Mode
    2.  Ad-free
    3.  Extensible by Plugins/Extensions
    4.  AI-Powered
    5.  Web-Based
    6. ChatGPT icon  ChatGPT integration

    LibreChat VS Reply4

     
  15. Meta Llama icon

    Meta Llama

     35 likes
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    As part of Meta’s commitment to open science, today we are publicly releasing Llama (Large Language Model Meta AI), a state-of-the-art foundational large language model designed to help researchers advance their work in this subfield of AI.

    213 Meta Llama alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    Meta Llama screenshot 1

    Meta Llama Features

    1.  AI-Powered

    Meta Llama VS Reply4

     
12 of 17 Reply4 alternatives