
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.

ListManager Copilot records 0 monthly visits with — month-over-month growth and Contact for Pricing pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

Browser copilot that adds GenAI writing help inside the Lyris ListManager email platform
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | sider.ai |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 0 (0) | 2.64M (2,644,740) |
| MoM Traffic Delta |
|---|
| 0 (—) |
| -314.2K (-10.6%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (13.3%) |
|---|
| Direct Visits / mo | 0 | 1.7M |
|---|
| User Rating | 3.5 | 4.5 |
|---|
| Supported Platforms | Browser Extension | Website |
|---|

Browser copilot that adds GenAI writing help inside the Lyris ListManager email platform
Automatically drafts compelling email subject lines inside ListManager to improve open rates without leaving the tool.
Generates custom attributes for list segmentation and personalized campaigns, reducing manual setup work.
Fills HTML email templates with AI-generated content so campaign drafts start populated rather than blank.
Works as a browser-level layer over Lyris ListManager, so no migration or data export is required.
AI sidebar and browser agent for reading, writing and research
A persistent panel that reads the page you are on and answers follow-ups with GPT, Claude or Gemini without copying content into another tab.
Summarise long articles, PDFs and YouTube videos, extract key points, and ask detailed questions about the source material.
Translate webpages, PDFs and images, compare bilingual output side by side, and have content read aloud for review on the move.
Delegate multi-step tasks across real websites — price comparison, form filling, research and inbox triage — using your existing logged-in sessions.

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.

SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free / Open-sourceAI-assisted email and SMS marketing that turns audiences into customers
#3
Free / Open-sourceAI-assisted newsletter editor for email, pages and forms


Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.

Free / Open-sourceEmail marketing with AI send-time optimization to lift opens

Free / Open-sourceA prompt library and management layer for ChatGPT and other AI models
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.

Free / Open-sourceAI writing assistant with autocomplete, research, and a Chrome extension

Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Free / Open-sourceAI-assisted email and SMS marketing that turns audiences into customers
Free / Open-sourceAI-assisted newsletter editor for email, pages and forms
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Free / Open-sourceEmail marketing with AI send-time optimization to lift opens
Free / Open-sourceA prompt library and management layer for ChatGPT and other AI models
Free / Open-sourceAI writing assistant with autocomplete, research, and a Chrome extension
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.