Open source focus

Open Source Alternatives to Slack

12 open source SaaS options similar to Slack, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.

View all alternatives to Slack →

PromptQL
Not rated
An AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.
Open source · Self-hostable
CommaAgent
Not rated
Best free & open source AI personal assistant.
Open source
Hugging Face
Not rated
Hugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.
Open source · Self-hostable
Posit
Not rated
Open-source data science platform for enterprise teams, enabling collaboration and reproducible results.
Open source · Self-hostable
Firebolt
Not rated
Cloud data warehouse for building next-gen analytics experiences with sub-second performance, designed for engineers and AI agents.
Open source
MariaDB
Not rated
A cloud database company providing a unified platform for transactional, analytical, and AI workloads.
Open source · Self-hostable
OpenProject
Not rated
Open-source project management software.
Open source · Self-hostable
LibreChat
Not rated
Open-source, self-hostable AI chatbot UI.
Open source · Self-hostable
Grafana Cloud
Not rated
Full-stack observability platform built on open standards for unifying telemetry and accelerating troubleshooting.
Open source · Self-hostable
Akash Network
Not rated
Decentralized cloud marketplace for compute resources, leveraging blockchain technology (DePIN).
Open source · Self-hostable
Mozilla Firefox
Not rated
Open-source web browser focused on privacy, user control, and an open internet.
Open source · Self-hostable
Nextcloud
Not rated
Open-source, self-hosted file sync and share and collaboration platform.
Open source · Self-hostable

Company	License	Founded	Rating	Reviews
PromptQLAn AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.	Open source · Self-hostable	-	Not rated	-
CommaAgentBest free & open source AI personal assistant.	Open source	-	Not rated	-
Hugging FaceHugging Face is the leading AI community and platform for machine learning collaboration, enabling developers to build, share, and deploy models, datasets, and applications.	Open source · Self-hostable	-	Not rated	-
PositOpen-source data science platform for enterprise teams, enabling collaboration and reproducible results.	Open source · Self-hostable	-	Not rated	-
FireboltCloud data warehouse for building next-gen analytics experiences with sub-second performance, designed for engineers and AI agents.	Open source	-	Not rated	-
MariaDBA cloud database company providing a unified platform for transactional, analytical, and AI workloads.	Open source · Self-hostable	-	Not rated	-
OpenProjectOpen-source project management software.	Open source · Self-hostable	-	Not rated	-
LibreChatOpen-source, self-hostable AI chatbot UI.	Open source · Self-hostable	-	Not rated	-
Grafana CloudFull-stack observability platform built on open standards for unifying telemetry and accelerating troubleshooting.	Open source · Self-hostable	-	Not rated	-
Akash NetworkDecentralized cloud marketplace for compute resources, leveraging blockchain technology (DePIN).	Open source · Self-hostable	-	Not rated	-
Mozilla FirefoxOpen-source web browser focused on privacy, user control, and an open internet.	Open source · Self-hostable	-	Not rated	-
NextcloudOpen-source, self-hosted file sync and share and collaboration platform.	Open source · Self-hostable	-	Not rated	-