The story so far.
How years inside the WhatsApp protocol became a platform, and why it now lives in Switzerland.
We have set the standard for WhatsApp tooling at every turn.
From browser automation with whatsapp-web.js to the raw protocol with Baileys, Go with whatsmeow, calls with meowcaller, Rust with whatsapp-rust and industrial scale with HyperMeow, we have moved with WhatsApp for years and raised the bar each time. Polymorfa is the next step, built by the same people.
Baileys
TypeScript11.2k
The most downloaded WhatsApp library, 1.4M a week on npm
Maintained by Rajeh Taher, with João Lucas de Oliveira Lopes
Used byOpenClaw, BotConversaand thousands of others
whatsapp-web.js
JavaScript22.7k
The largest WhatsApp library by GitHub stars
Maintained by Rajeh Taher, who has worked on it since 2020
Used byWAHA, Whaticketand thousands of others
whatsmeow
Go7.4k
The Go library for the WhatsApp multidevice API
Long-time contributions from Rajeh Taher
Used byOpenClaw, Beeperand thousands of others
whatsapp-rust
Rust841
A WhatsApp client written purely in Rust
Maintained by João Lucas de Oliveira Lopes
Used bymoltis, Zapfastand thousands of others
HyperMeow
Go67
whatsmeow, industrialized for massive scale
Our own open-source library
Used byPolymorfaand hundreds of others
meowcaller
Go263
The first pure MLOW implementation
WhatsApp calling for whatsmeow, written by Rajeh Taher
Used byPolymorfa, OpenClawand hundreds of others
The Timeline
Years of engineering effort that got us to this point.
Rajeh's first commits to whatsapp-web.js and Baileys; both become long-term maintainerships.
His Whaticket days, and contract work for BotConversa: WhatsApp tooling becomes a career.
Bridge work at Beeper under Automattic, the company behind WordPress and Tumblr, with his contributions across whatsmeow and mautrix.
A production WhatsApp API, built to run his own GitHub Sponsors.
The model moves to IaaS and design work on the new system begins.
The design for the new system is completed.
First public teaser, under the name Polymorfa.
Started Softium LLC under a joint partnership with Stempora, a Swiss software company with 50+ global employees.
First internal beta, with thousands of connected WhatsApp sessions.
First public beta.
Launch.
Built by WhatsApp protocol nerds.
Polymorfa is developed under Softium LLC, a Swiss company formed as a joint partnership between Rajeh Taher and Stempora, a software company with 50+ global employees working across software, AI, and identity systems.
Wanna work for us? Careers
Ship a WhatsApp integration this afternoon.
Free on the sandbox. No credit card. The projects you start here migrate straight into production.