OnePanel is described as 'Combines 200+ messaging, email and collaboration web apps in isolated account sessions, with split views, native alerts, workspaces and custom URLs' and is a instant messenger in the office & productivity category. There are eight alternatives to OnePanel for a variety of platforms, including Mac, Windows, Linux, Snapcraft and Flathub apps. The best OnePanel alternative is Beeper, which is both free and Open Source. Other great apps like OnePanel are Ferdium, Station, Rambox and Franz.
Brings together messaging from 14 networks into a single inbox, including WhatsApp, Telegram, Slack, and more, with strong privacy via on-device connections, cross-platform availability, chat reminders, scheduling, and unified notifications for all devices.
United States
Open source cross-platform desktop app uniting messaging, email, productivity, and custom services in a side-by-side interface with easy account-free use, workspaces, built-in Todo panel, resource hibernation, robust privacy controls, and optional multi-device sync.
Germany
EU
Station is the first open-source smart browser for busy people. A single place for all of your web applications.
FranceEU
A digital workspace organizer that allows you to unify as many applications as you want, all in one place. It is perfect for those who care about productivity while working with many business and personal apps.
Argentina
Centralize multiple chat and messaging services in one customizable interface, organize workspaces, receive synchronized notifications, manage multiple accounts per service, and easily access popular platforms on Mac, Windows, and Linux. Privacy controls included.
AustriaEU
Productivity browser featuring unified webmail, website, and web app management, isolated multi-account support, vertical sidebar with grouping, memory-saving tab sleeping, app-to-app linking, built-in chat and screenshare, collaboration workspaces, and strong security.
United Kingdom
Free open source Electron based multi instant messaging (IM) client.
Combine all your IM applications (or whatever you want) in a single browser (Electron) window.
SpainEU
All your messaging apps in one Windows window: WhatsApp, Teams, Telegram, Gmail and your calendar. Each service keeps its own isolated session, so two accounts of the same service stay signed in side by side instead of signing each other out. Free and open source.
