O Sessions tem algo comparável? O SimpleX parece ter também um sistema útil? Já criei um grupo lá também:
https://simplex.chat/contact#/?v=2-4&smp=smp%3A%2F%2F1OwYGt-yqOfe2IyVHhxz3ohqo3aCCMjtB-8wn4X_aoY%3D%40smp11.simplex.im%2FInywNcE6VAq7y2gt7IYhiYEM1-qroyGr%23%2F%3Fv%3D1-2%26dh%3DMCowBQYDK2VuAyEAd1F64ADuDXWgf3G7xCIN2AysXLannVzKR3pOuOx7c04%253D%26srv%3D6ioorbm6i3yxmuoezrhjk6f6qgkc4syabh7m3so74xunb5nzr4pwgfqd.onion&data=%7B%22type%22%3A%22group%22%2C%22groupLinkId%22%3A%22MfRCkd1A5yppZS3PEECccg%3D%3D%22%7D