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

Sider records 2,644,740 monthly visits with -10.6% month-over-month growth and Freemium pricing. Thunderbit records 391,726 monthly visits with -21.9% growth and Freemium, Contact for Pricing pricing.
Agentic web scraper that turns any page into ready-to-use data
| Dimension / Metric | ||
|---|---|---|
| Official Domain | sider.ai | thunderbit.com |
| Pricing Model | Freemium | Freemium, Contact for Pricing |
| Monthly Visits | 2.64M (2,644,740) | 391.73K (391,726) |
| MoM Traffic Delta | -314.2K (-10.6%) |
| -110.09K (-21.9%) |
| Primary Market & Share | 🇺🇸 United States (13.3%) | 🇺🇸 United States (9.9%) |
|---|
| Direct Visits / mo | 1.7M | 80.22K |
|---|
| User Rating | 4.5 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|
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.
Agentic web scraper that turns any page into ready-to-use data
Open a page, click extract, and AI proposes the fields worth capturing and returns structured rows — no CSS selectors or drag-and-drop setup.
For popular sites like Amazon, eBay, and Google Maps, pre-built templates return consistent fields instantly without spending AI credits.
Thunderbit can open linked pages and pull details from them, so a results list and its detail pages become a single table in one run.
Summarize, categorize, translate, reformat, or calculate fields as part of the scrape, so exports arrive ready to use.

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.

Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.

SpecialistA powerful cloud scraping marketplace, but lacks Thunderbit's instant natural-language browser extension scraping experience.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
Offers robust browser automation and AI data extraction, but focuses more broadly on general web assistance.

SpecialistCloud-based lead generation and scraping automation, but lacks an interactive browser extension agent interface.

Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
SpecialistA desktop visual scraping tool rather than a browser extension, offering heavier-duty scraping capabilities for large sites.
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.

Combines web scraping with browser automation and CRM syncing, but has a steeper workflow setup curve.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.
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.
Offers a very similar browser sidebar experience with multiple AI models, but features slightly different pricing and workspace tools.
SpecialistA powerful cloud scraping marketplace, but lacks Thunderbit's instant natural-language browser extension scraping experience.
Provides robust browser-based summarization and prompt assistance, but lacks some of Sider's deeply integrated multi-model chat UI features.
SpecialistCloud-based lead generation and scraping automation, but lacks an interactive browser extension agent interface.
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
SpecialistA desktop visual scraping tool rather than a browser extension, offering heavier-duty scraping capabilities for large sites.
Integrates bookmark management and content composition into a clean sidebar, but has a more limited feature set than Sider.
Combines web scraping with browser automation and CRM syncing, but has a steeper workflow setup curve.
Delivers streamlined inline writing and webpage summarization via a browser extension, but with fewer custom sidebar tools.