Best Developer Diary Alternatives & Competitors in 2025

Open source, flat-file Knowledgebase platform that uses static Markdown files.

Key Raneto features:

Lightweight Markdown Support Easy Setup Open Source

Open Source

A second brain, for you, forever. Obsidian is a powerful knowledge base that works on top of a local folder of plain text Markdown files.

Key Obsidian.md features:

Local-first Markdown Support Bidirectional Linking Customizability

Industry's first context-aware Helpdesk Software.

Key Zoho Desk features:

Omnichannel Zia - Artificial Intelligence Embeddable Self-service Multibrand Help Center

Visit website freemium $12.0 / Annually ($12 USD/monthly on Annual Subscription.)

Gollum is a simple wiki system built on top of Git.

Key Gollum features:

Simple Installation Git Integration Markdown Support Lightweight

Open Source

Daux.io is a documentation generator that uses a simple folder structure and Markdown files to...

Key Daux.io features:

Easy Documentation Generation Live Preview Customizable Themes Search Functionality

Open Source

Collect your thoughts and notes without leaving the command line.

Key Jrnl.sh features:

Simplicity Quick Entry Customization Privacy

Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.

Key OneNote features:

Cross-Platform Accessibility Collaboration Features Integration with Microsoft Ecosystem Flexible Organization

Easy to maintain open source documentation websites.

Key Docusaurus features:

Easy Setup Customizable React-Based Versioning

Open Source

Everything has a place! All the random miscellaneous data you have stored in various places and on post it notes can easily be added to LifePIM.

freemium $39.95 / One-off

A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.

Key Day One features:

User-friendly Interface Cross-Platform Availability Rich Media Support End-to-End Encryption

Gitbook alternative in Rust.

Key mdbook features:

Easy to Use Customization Lightweight and Fast Open Source

Writing notes made simple.

Key Falcon for iOS features:

User Interface Performance Customization Integration

Joplin is a free, open source note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, tagged and modified either from the applications directly or from your own text editor. .

Key Joplin features:

Open Source Cross-Platform End-to-End Encryption Rich Text Support

Open Source free

A smart notebook that grows and collaborates with you.

Key Notebook.ai features:

Comprehensive World-Building Tools Collaboration Customizable Templates Cloud-Based Storage

Open Source