WhatsApp

Website

whatsapp.com

Pricing URL

-

$ Details

free

Platforms

Mobile Desktop

Release Date

2009 January

Categories

#Communication #Messaging #Instant Messaging #Group Chat & Notifications

Startup details

Country

United States

State

California

City

Santa Clara

Founder(s)

Brian Acton

Employees

1,000 - 1,999

OffCode Tor Chat E2EE

Website

dev-offcode.com

Pricing URL

Official OffCode Tor Chat E2EE Pricing

$ Details

freemium $49.0 / One-off (Source-code)

Platforms

-

Release Date

2026 July

Categories

#Chat #Group Chat & Notifications #Network Security #Security & Privacy #Encryption #Messaging #Group Messaging #Instant Messaging #Web App #Web Hosting #Self Hosting #Tor

Startup details

Country

Finland

WhatsApp features and specs

• End-to-End Encryption
  WhatsApp provides end-to-end encryption for all messages and calls, ensuring that only you and the person you're communicating with can read or listen to them.
• Cross-Platform Availability
  WhatsApp is available on various platforms including iOS, Android, and Windows, allowing users to stay connected regardless of the device they are using.
• Cost-Effective
  The app is free to download and use, with no subscription fees, making it a cost-effective solution for messaging and calls.
• Wide Adoption
  With over 2 billion users, WhatsApp has a large user base, making it likely that your contacts are already using the app.
• Multimedia Sharing
  Users can easily share photos, videos, documents, and location, enhancing the communication experience.
• Voice and Video Calls
  WhatsApp supports high-quality voice and video calls, allowing users to communicate in various modes.
• Group Chats
  The app supports group chats, enabling users to communicate with multiple people at once.

Possible disadvantages of WhatsApp

• Privacy Concerns
  While WhatsApp offers end-to-end encryption, its ownership by Facebook has raised concerns over data privacy and usage.
• Data Usage
  High data consumption during voice and video calls can be a concern, especially for users without an unlimited data plan.
• Storage Space
  Multimedia and chat backups can consume significant storage space on devices, leading to potential issues with device performance.
• Spam and Scams
  Users sometimes receive spam messages or become targets of scams, which can be a nuisance and a security risk.
• Limited File Size
  The app has limitations on the size of files that can be shared, which might not be convenient for all users.
• Dependency on Phone Number
  Users are required to have a phone number to register, which can be a barrier for some individuals.
• Availability in Certain Countries
  WhatsApp is banned or restricted in some countries, limiting its accessibility for users in those regions.

OffCode Tor Chat E2EE features and specs

• Ciphertext storage
  SQLCipher database under LocalAppData (Windows) or Docker volume. DPAPI / env key. Parameterized queries. Plaintext is never written to disk.
• Close room to new members
  blocks all joins (including invites); members stay
• Slow mode
  Send cooldown 1 min … 4 h (applies to everyone, including creator)
• Delete this room
  Same wipe path as Server Manager room delete
• Creator recovery code
  Binds rooms you create; My rooms lists hidden; Copy / Restore
• Rooms, invites & TTL
  Open, password-protected, and/or hidden rooms with invite links and required per-message lifetime.
• Server manager
  Start ChatServer first (Production, waits for /api/health), then enable Tor Copy and share the published .onion URL Optional Full Vanguards checkbox (Python + Stem) for long-lived HS hardening Locks CORS to your onion: TORCHAT_ALLOWED_ONION on start + live POST /api/admin/cors-onion (no ChatServer restart) Live room list (room id, locked flag, online count only, no message content) Remove a selected room in realtime: connected users are forced back to the lobby; ciphertext for that room is deleted with secure_delete + VACUUM Remove SQL data: securely overwrites (then deletes) the SQLCipher DB, WAL/SHM, and db.key.dpapi; optional checkbox also wipes Tor Hidden Service keys (.onion identity) Generate new address: securely wipes HS keys and publishes a new .onion (chat DB unchanged) Point at your ChatServer project path and load/save host config as needed
• Full Vanguards Guard-Discovery Protection
  A standard Tor Hidden Service chooses its entry (guard) nodes randomly on every circuit build. Over time a network-level adversary can watch which relays the server connects to and gradually narrow down the real server IP. This is called a guard-discovery attack and is especially dangerous for long-lived hidden services.
• Encryption
  WebCrypto AES-256-GCM; PBKDF2-v2 domains at 600 000 iterations (torchat-join-v2 / torchat-e2ee-v2 locked = server-blind; torchat-open-v2 open = public key material). Envelopes: pbkdf2-v2 / ecdh-hybrid-v1
• XSS hardening
  No user innerHTML; messages and room ids via textContent / createElement
• ECDH + safety number
  1:1 hybrid ECDH; safety number from sorted SPKI pubs (3×5 decimal); Mark verified / TOFU change warning (sessionStorage)

How to Use Whatsapp - 2020 Beginner's Guide

More videos:

OffCode Tor Chat Showcase