
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.
DROP records 488 monthly visits with -71.8% month-over-month growth and Free pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.

Send files and folders up to 10 GB with one link
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | drop.space | sider.ai |
| Pricing Model | Free | Freemium |
| Monthly Visits | 488 (488) | 2.64M (2,644,740) |
| MoM Traffic Delta | -1.24K (-71.8%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (100%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 190 | 1.7M |
| User Rating | 4.3 | 4.5 |
| Supported Platforms | Website | Website |

Send files and folders up to 10 GB with one link
Send up to 10 GB in a single transfer, with support for 1 to 1,000 files per upload.
Choose a folder directly in a browser that supports folder selection; relative paths are preserved so recipients get the structure back as a ZIP.
Upload first, then sign in with Google or an email code to unlock the link — anyone with the link can download without registering.
Recipients can preview common images, PDF, playable video and audio, and text before downloading, with Office/OpenDocument previews when the conversion service is available.
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.
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.

Your files, notes and meetings in one drive — with an AI that knows all of it.
Your files, notes and meetings in one drive — with an AI that knows all of it.
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.

The deal-grade virtual data room, live in five minutes
A private, EU-hosted AI machine with files, software and persistent memory
A private, EU-hosted AI machine with files, software and persistent memory

An AI file assistant that organizes and answers questions across your team's documents
An AI file assistant that organizes and answers questions across your team's documents