VoidSend vs Howdlo

VoidSend is a zero-knowledge encrypted messenger built for a post-quantum world. Every message, file, and call is encrypted on your device before it ever leaves — our servers act as a blind relay, mathematically unable to decrypt your data. ZERO-KNOWLEDGE ARCHITECTURE Unlike other messengers that promise privacy, VoidSend's Blind Relay design means the server only ever sees encrypted blobs. No plaintext. No metadata leaks. Your encryption keys never leave your device. POST-QUANTUM ENCRYPTION VoidSend uses hybrid encryption combining X25519 with ML-KEM-768 (Kyber), protecting your conversations against both today's threats and tomorrow's quantum computers. Messages are sealed with AES-256-GCM, and identities are verified with ML-DSA-65 post-quantum signatures. MESSAGING • End-to-end encrypted direct and group messages • Disappearing messages (5 seconds to 7 days) • Encrypted file sharing with automatic 24-hour server-side deletion • Emoji reactions, replies, and typing indicators • Message search across your conversation history VOICE & VIDEO CALLS • Peer-to-peer WebRTC audio and video calls • Optional post-quantum encrypted media streams • Call history WEB3 PAYMENTS (Only available on www.voidsend.xyz) • Built-in multi-chain wallet: Ethereum, Base, and Solana • Send and receive ETH, USDC, USDT, SOL, and SPL tokens • Wallet derived from your encryption seed — one identity, one key PASSWORDLESS AUTHENTICATION • Sign in with your crypto wallet (EIP-712 signature) • Or use Face ID / Touch ID with Passkeys • No email. No phone number. No passwords. Just you. STORIES & PROFILES • Share ephemeral photos and videos with your contacts • Custom avatars and usernames • Online status visible only to mutual contacts PRIVACY BY DESIGN • No data collection beyond your username and encrypted data • Block contacts and control who can message you • Cross-platform: your encrypted identity syncs seamlessly across all your devices VoidSend doesn't ask you to trust us — it's built so you don't have to.

Howdlo is where your chats and your communities finally live in one beautiful place. MESSAGE LIKE YOU MEAN IT • Fast 1:1 and group chats with replies, reactions, edits, and read receipts • Photos, video clips, voice notes, and file attachments • Live polls and collaborative sheets — decide things together, right in the chat HANG OUT IN HANGOUTS • Discord-style communities with channels, roles, and permissions • Voice lounges: tap in, talk, tap out — no calls to schedule • Breakaway convos when a thread deserves its own room DROP A LINE • Drops are 24-hour posts over gorgeous aurora gradients or your photos • See friends' Drops in a strip at the top of your chats — tap through like stories CALL WITHOUT FRICTION • 1:1 voice and video calls, peer-to-peer and private YOURS, PRIVATELY • Email-code sign-in — no passwords to remember, no phone number required • Block and report anyone; delete your account in-app, instantly • No ads. No trackers. We don't sell your data. Ever. Howdlo — Hang Out, Write, Drop Lines Online.