OSHI Messenger
The French alternative to Bitchat and Telegram for messaging
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OSHI is an encrypted messenger that keeps working when the network does not. Nearby phones relay for each other over Bluetooth mesh and LoRa, so a conversation keeps moving in airplane mode, underground, or during an outage. No phone number, no account, no SIM. One-to-one chats are end-to-end encrypted with a Double Ratchet, and you can verify any contact with a safety number. Offline maps, steganography, and an on-device AI that never sends a word off your phone. Free and open source, MIT.
PH · launched Sep 15, 2026 · 1 upvote (top 69%) · 0 views
Niche: private and secure messaging apps · 144 launches, 10 in the last 7 days ▼ -41% · Explore this niche →
Category and tags
- Horizontal
- Communication
- B2C
- Not AI
- Commercial product
- Messaging
- Privacy
- GitHub
- Security
Visit website ↗ Source listing ↗
More like this: all 144 launches in private and secure messaging apps →
Could you build this?
No Building an offline mesh messenger operating across Bluetooth Low Energy (BLE) and LoRa hardware with zero-setup peer routing and end-to-end encryption demands specialized systems, RF, and cryptography engineering.
What it would actually take: The app requires low-level native mobile development (iOS CoreBluetooth and Android BLE APIs) combined with external hardware interfaces for LoRa radios via serial/Bluetooth bridges. The engineering hurdles include custom ad-hoc mesh routing protocols (like B.A.T.M.A.N. or Reticulum) to route packets across intermittent multi-hop topologies, background execution limits imposed by iOS/Android, and bulletproof implementation of the Double Ratchet cryptographic protocol without centralized key servers.
Competitors
Other products that read as similar to this one : 255 launches clear the similarity bar, closest 8 shown.
Attention rank: #211 of 256 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 300 days after the earliest competitor.
- One to One Secret Chat · ph · 2026-10-20 · 1 upvotes · similarity 0.55
- Dialog · ph · 2026-10-20 · 2 upvotes · similarity 0.53
- SECRET — private messenger · ph · 2026-09-11 · 2 upvotes · similarity 0.52
- X2Chat · ph · 2026-09-23 · 1 upvotes · similarity 0.51
- GSTNet Secure · ph · 2026-10-13 · 1 upvotes · similarity 0.50
- MiutChat · ph · 2026-11-09 · 1 upvotes · similarity 0.49
- ZKRYPT · ph · 2026-11-06 · 1 upvotes · similarity 0.49
- Gonchat · ph · 2026-11-03 · 1 upvotes · similarity 0.49
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.