Open Source Business & Productivity Tools

Alternative toDocuSign

Open source document signing and fillable PDF forms

• 18,756 GitHub stars
• AGPL-3.0Licence AGPL-3.0

Alternative toSuperhuman

Fast open source desktop email client

• 17,934 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toMuse

Self-hosted open source personal assistant for your server

• 17,595 GitHub stars
• MITLicence MIT
• #AI Agents

Alternative toJira

Plan projects with Gantt, Scrum, and Kanban, all self-hostable

• 16,508 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toMem

Self-organizing AI second brain for Obsidian, plain Markdown

• 15,696 GitHub stars
• MITLicence MIT
• #LLM

Alternative toAirtable

Airtable alternative with an AI chatbot builder, self-hostable

• 15,639 GitHub stars
• AGPL-3.0Licence AGPL-3.0
• #Database

Alternative toSibelius

Free music notation and composition software, cross-platform

• 15,274 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toGrammarly

Self-hosted grammar and style checker for 30+ languages

• 15,169 GitHub stars
• LGPL-2.1Licence LGPL-2.1

Alternative toEvernote

End-to-end encrypted open source note-taking, cross-platform

• 14,803 GitHub stars
• GPL-3.0Licence GPL-3.0

Alternative toPlex

Open source web UI for media streaming, powered by community addons.

• 14,704 GitHub stars
• GPL-2.0Licence GPL-2.0
• #Video