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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 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 Spacedrive

Spacedrive

Business & Productivity

It unifies files from all your devices and clouds into a single, easy-to-use explorer, designed for creators and the disorganized.

File Sync & StorageFile SharingKnowledge Management+5
icon of Psono

Psono

Security & MonitoringSystem & ITBusiness & Productivity

A self-hosted, open-source password manager for businesses, offering secure credential storage, sharing, and access control features.

Self HostedOpen CoreCybersecurity+10
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
icon of Anytype

Anytype

Business & ProductivitySecurity & MonitoringCommunication & Collaboration+3

Anytype is a local-first, peer-to-peer, open-source "everything app" emphasizing trust, autonomy, and powerful no-code creation.

Personal Knowledge ManagementNote taking AppsFile Sync & Storage+13
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