Open Source Communication & Collaboration Tools

Alternative toClaude Code

Open source collaborative workspace for debugging issues

• 23 GitHub stars
• MITLicence MIT

Alternative toSlack

Lightweight self-hosted messaging platform for teams

• 13 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Chat

Alternative toLastPass

Self-hosted team password manager with web-based access control

• 10 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Security

Alternative toZoho Mail

Self-hosted email server stack forked from Mailcow

• 9 GitHub stars
• GPL-3.0Licence GPL-3.0
• #Email

Alternative toGather

Open-source virtual office for remote teams. See who's around, walk ov

• 8 GitHub stars
• Apache-2.0Licence Apache-2.0

Alternative toTaskade

AI assistant that turns text messages into actionable tasks

• 5 GitHub stars
• GPL-3.0Licence GPL-3.0
• #AI Agents

Alternative toWispr Flow

Free offline voice typing for Windows 10/11 and Ubuntu Linux

• 3 GitHub stars
• CustomLicence MIT License with third-party component notice

Alternative toAirDroid

Phone notifications, messages, files and calls on Windows, no cloud.

• 2 GitHub stars
• MITLicence MIT

Alternative toVapi

Self-hosted voice AI agent for calls, SMS, WhatsApp and web chat.

• 2 GitHub stars
• MITLicence MIT
• #AI Agents