Dia Browser records 1,254,172 monthly visits with +108.4% month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
The AI browser that reads between your tabs
AI sidebar and browser agent for reading, writing and research
| Dimension / Metric | | |
|---|---|---|
| Official Domain | diabrowser.com | sider.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 1.25M (1,254,172) | 2.64M (2,644,740) |
| MoM Traffic Delta | +652.37K (+108.4%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (29%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 740.36K | 1.7M |
| User Rating | 4.3 | 4.5 |
| Supported Platforms | Website | Website |
The AI browser that reads between your tabs
Starts the day with a consolidated view of your calendar, inbox and key links so you know what is coming before work begins.
Ask once and Dia searches open tabs along with connected Slack, Notion, Teams, GSuite and other tools to answer with full context.
Requests for a deck or a summary come back as presentable slides and shareable reports rather than raw chat text.
Surfaces where work is actually happening, like a specific pull request or spec draft, so one click lands you in the right place.
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.
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.
Free / Open-sourceProvides an open-source desktop AI workforce for browser and terminal tasks, though less polished as a daily web browser.
Excels at advanced web automation and data extraction alongside chat, but has a steeper learning curve than Sider.
Combines local LLMs with web automation inside a private browser, though lacking Dia's native workspace integration.
Combines local LLMs with web automation inside a private browser, though lacking Dia's native workspace integration.
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.
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.
Integrates multi-model AI assistants for research automation, though with a different interface and navigation paradigm.
Integrates multi-model AI assistants for research automation, though with a different interface and navigation paradigm.
Provides an AI companion for page summarization and natural-language search within macOS, though in early alpha.
Provides an AI companion for page summarization and natural-language search within macOS, though in early alpha.
