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Handpicked Open Source Alternatives to Paid Softwares

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icon of Notable

Notable

Design & CreativeBusiness & ProductivityWeb & App Development

A markdown-based, open-source note-taking app built for developers and technical professionals who value speed, simplicity, and data ownership.

Note taking AppsPersonal Knowledge ManagementKnowledge Management+2
icon of Bookshelf

Bookshelf

Design & CreativeBusiness & Productivity

A self-hosted, open-source application for tracking and managing your personal library, reading habits, and book notes.

Self HostedPersonal Knowledge ManagementNote taking Apps+1
icon of SiYuan

SiYuan

Communication & CollaborationBusiness & Productivity

A privacy-first personal knowledge management system with Markdown support, block-level referencing, and bidirectional links.

DocumentationSelf HostedKnowledge Management+2
icon of AppFlowy

AppFlowy

Communication & CollaborationBusiness & ProductivityAI & Machine Learning+1

AI collaborative workspace that helps teams manage projects, wikis, and tasks while maintaining control over their data.

Knowledge ManagementProject ManagementNote taking Apps+7
icon of Joplin

Joplin

Business & ProductivityCommunication & Collaboration

An open-source note-taking application that allows you to capture your thoughts and securely access them from any device.

Note taking AppsKnowledge ManagementFile Sync & Storage+3
icon of Docmost

Docmost

Business & ProductivityCommunication & Collaboration

It helps you collect, organize, and share documents in one simple place

DocumentationNote taking AppsKnowledge Management+3
icon of Logseq

Logseq

Business & ProductivityCommunication & CollaborationProduct & Project Management

A privacy-first, open-source knowledge base platform for knowledge management and collaboration, focusing on outlining and linking.

Knowledge ManagementNote taking AppsPersonal Knowledge Management+8
icon of Taiga

Taiga

Product & Project ManagementWeb & App Development

A free, open-source project management platform for agile teams, supporting both Scrum and Kanban workflows, ideal for startups, developers, and designers seeking a clean and powerful PM tool.

Developer ToolsProject ManagementAgile Project Management+4
icon of Outline

Outline

Communication & CollaborationBusiness & ProductivityProduct & Project Management

A modern team knowledge base and wiki designed for internal documentation, product specs, meeting notes, and more.

Knowledge ManagementDocumentationNote taking Apps+4
icon of Trilium.cc

Trilium.cc

Business & ProductivitySystem & ITWeb & App Development

It offers paid hosting for Trilium Notes, a personal knowledge base application with features like note encryption and tree layout.

Knowledge ManagementNote taking AppsPersonal Knowledge Management+3
icon of Focalboard

Focalboard

Product & Project ManagementCommunication & CollaborationBusiness & Productivity+1

An open-source project management tool, offering a Trello, Asana, and Notion alternative for technical teams to stay aligned.

Project ManagementKnowledge ManagementFile Sharing+6
icon of Zettlr

Zettlr

Business & ProductivityCommunication & CollaborationProduct & Project Management

A free, open-source Markdown editor designed for researchers and writers, supporting the entire writing process from notes to publication.

Knowledge ManagementNote taking AppsPersonal Knowledge Management+6
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