Now Live for Researchers

The Research OS
Built for Toppers.

Search millions of books, annotate in real-time, store everything securely in the cloud, and never lose a highlight again. Built for serious students.

10,000+ researchers
4.9 rating
Free forever plan

Search-to-Annotate

Most Used

Instant access to millions of books. Highlight, annotate, and export in seconds.

Infinite Cloud Storage

Pro Feature

Zero storage limits for your personal library. Your books and annotations, always available.

Commit History

Pro Feature

Git-style versioning for your research. Every note tracked, never lost.

10,000+
Active Researchers
2M+
Documents Accessible
Unlimited
Cloud Storage
4.9★
User Rating
Simple Process

From Sign-up to First Annotation
in Under 2 Minutes

No complicated setup. No learning curve. Just powerful research tools that work.

01

Create Free Account

Sign up in 30 seconds. No credit card required. Full access to the Free plan immediately.

02

Search & Find Books

Search across 2M+ academic books, textbooks, and research papers instantly.

03

Annotate & Save

Highlight text, add notes, and everything syncs to your cloud library instantly.

Testimonials

Researchers Love Lib4All

Join thousands of students from India's top institutions

"Lib4All completely changed how I manage research papers. The cloud sync is genius, my entire library is always with me."

PS
Priya Sharma
IIT Delhi, Computer Science

"I read 50+ PDFs a month. The annotation tools and version history have saved me countless hours of re-reading."

AM
Arjun Mehta
AIIMS Mumbai, Medical Research

"The Pro plan at ₹199/month is a steal. Other research tools cost 5x more and don't even have half these features."

SK
Sneha Kulkarni
IIMB, MBA Student

Used by students at

IIT DelhiIIT BombayAIIMSIIM BangaloreNIT TrichyBITS Pilani
Pricing

Smarter Library.
Limitless Learning.

Your AI-Powered Library for Books, Papers & More.
Find • Read • Learn • Share

Find books instantly
Faster AI search
Bookmark & highlight
Edit & write notes
Cloud storage
Share with other users

FINDING BOOK

LIFETIME FREE
₹0
FOREVER
  • Find books anytime
  • Basic search access
  • Lifetime free usage

PRO

1 GB STORAGE
₹199₹20/ month
For International Users
$1 / 2 months
(Billed together)
  • Store 10–20 books
  • Edit & write notes
  • Bookmark support
  • Highlight content
  • Access from anywhere
STARTING AT ₹20 / month
POPULAR

MAX

UP TO 5 TB STORAGE
₹499₹49/ month
For International Users
$2 / 2 months
(Billed together)
  • Unlimited books & PDFs
  • Upload custom documents
  • Up to 5 TB storage
  • Add outside library PDFs
  • Share with other users
  • No upload limits
  • Access from anywhere
STARTING AT ₹49 / month

All Features

AI-Powered Smart Search
Access Millions of Books & Papers
Download & Read Offline
Bookmark & Highlight
Edit & Write Notes
Organize with Collections
Powerful PDF Viewer
Dark & Light Mode
Advanced Filters & Sorting
Cross-Device Sync
Access from Anywhere
Mobile App (Android)
iOS App
Web App
Windows App
Secure Cloud Storage
Regular Updates
Fast & Clean Interface

Access Everywhere

Your library, in your pocket and on every screen. Access your documents anytime, anywhere.

Mobile (Android)
iOS App
Web App
Windows App
Access your documents anytime, anywhere.

EARLY USER OFFER

USE CODE:INITIAL_USER_90
LIMITED TIME ONLY
UP TO 90% OFF
★ Price valid till 21st June *
PRO
₹199₹20 / mo
MAX
₹499₹49 / mo
Limited Time - Free Pro Trial

Your Academic Career
Deserves Better Tools.

Join 10,000+ students who already study smarter. Start free, and upgrade when you're ready.

No credit card • Free forever plan • Upgrade anytime