Search Engines tools

Search platforms for websites, applications, and enterprise content.

AppFlowy

Search Engines

AppFlowy is an open-source collaborative workspace for organizing projects, tasks, wikis, databases, documentation, and AI-assisted work across devices.

Siyuan

45,825

Search Engines

SiYuan is a privacy-first knowledge workspace for block-based notes, linked documents, AI-assisted writing, and structured personal knowledge management.

Logseq

44,466

Search Engines

Logseq is an open-source knowledge-management app for organizing notes, tasks, and ideas in local-first graphs, with desktop, web, and mobile access.

Trilium

37,438

Search Engines

Trilium is an open-source note-taking application for building large personal knowledge bases with rich editing, search, organization, and self-hosted sync.

Docmost

21,372

Search Engines

Docmost is open-source collaborative wiki software for creating, organizing, searching, and maintaining team documentation with real-time editing, comments.

Docs

16,725

Search Engines

Docs is an open-source web editor for teams to create, organize, and share structured knowledge collaboratively, with real-time editing and self-hosted data.

Colanode

5,015

Search Engines

Colanode is an open-source, local-first collaboration workspace for team chat, rich-text pages, wikis, databases, files, and self-hosted data control.

OpenKB

3,777

Search Engines

OpenKB compiles documents into an interconnected wiki for searching, chatting, browsing, and generating cited answers, skills, graphs, and slide decks.

Open-knowledge

3,466

Search Engines

OpenKnowledge is a local-first markdown editor and AI-native wiki for creating, organizing, searching, and sharing notes and knowledge bases.

Community

2,415

Search Engines

Documize is a self-hosted knowledge-management platform for creating, organizing, and maintaining internal and external documentation with collaborative pages.

Alexandrie

2,326

Search Engines

Self-hosted knowledge base for organizing, searching, sharing, and exporting Markdown notes with offline access, team workspaces, and granular permissions.

How to choose open-source Search Engines software

Start with the workflow you need to replace, then compare feature coverage, deployment documentation, project activity, data portability, and support. Repository popularity is useful context, but it should not outweigh fit or the project's maintenance history.

Capabilities and use cases

Across the reviewed tools, common documented capabilities include Verified internal knowledge-base documents, Collaborative document editing, Collaborative knowledge pages from draft to maintained team reference, Note-to-shareable-document workflow, Connected note vault creation, Cross-device apps, Live document collaboration, Local data storage. Verify the exact workflow on each profile before migrating production data.

Licensing considerations

Licenses represented in this category include AGPL-3.0, Apache-2.0, GPL-3.0, MIT. Check redistribution, modification, and hosted-service obligations against your intended use.

Self-hosting tradeoffs

11 of 11 reviewed tools are confirmed as self-hostable, and 6 document Docker support. Compare upgrade, backup, monitoring, and security work alongside hosting cost.

Related software categories

Document Collaboration Knowledge Management Project Management AI Assistants Digital Whiteboards Note Taking