Email Tracker records 8,240 monthly visits with -60.3% month-over-month growth and Freemium pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
Free Gmail email tracking with open, link and attachment insights
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | ||
|---|---|---|
| Official Domain | emailtracker.cc | sider.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 8.24K (8,240) | 2.64M (2,644,740) |
| MoM Traffic Delta | -12.54K (-60.3%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (31.9%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 3.52K | 1.7M |
| User Rating | 3.8 | 4.5 |
| Supported Platforms | Website | Website |
Free Gmail email tracking with open, link and attachment insights
Get alerted through Chrome notifications or email the moment your message is opened, so you can time a follow-up while the interest is fresh.
See how many times and exactly when a recipient accessed your email, which helps identify the messages and segments that actually land.
Know when someone clicks a link in your message or opens an attached file, not just whether the email was opened.
Choose a visible tracker to encourage replies, or an invisible tracker when you prefer recipients not to know.
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.
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.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
Private AI chat from the makers of DuckDuckGo
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
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.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
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.
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
The personal CRM that keeps your network warm — with your LinkedIn graph baked in
The personal CRM that keeps your network warm — with your LinkedIn graph baked in
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
An AI email assistant that drafts, summarizes, and perfects your messages in place
An AI email assistant that drafts, summarizes, and perfects your messages in place
One AI sidebar for ChatGPT, Claude and Gemini across the web
One AI sidebar for ChatGPT, Claude and Gemini across the web
