Company Overview
Logseq is an open-source knowledge management and note-taking tool, founded by Tienson Qin, Hongyu Gong, and Jacob Hong. The project began around 2015, with the company formally established in 2019. Logseq operates with a remote-first, globally distributed team based in China. It uses a block-based outliner with support for both Markdown and Org-mode file formats, built on local-first, privacy-first principles.
Logseq is one of the most successful open-source alternatives to Roam Research, featuring block-level editing, bidirectional links, knowledge graph visualization, whiteboard, and journal-based daily notes. Users maintain full control over their data, which is stored as plain-text Markdown or Org-mode files on local storage.
Key Facts
| Item | Details |
|---|---|
| Company Name | Logseq |
| Founders | Tienson Qin, Hongyu Gong, Jacob Hong |
| Founded | 2019 (project started circa 2015) |
| Headquarters | China (remote-first, globally distributed) |
| Website | logseq.com |
| Core Focus | Knowledge management, note-taking, open-source tools |
Product Matrix
| Product | Description |
|---|---|
| Logseq | Core knowledge management app with block editing, bidirectional links, graph, whiteboard, journals; free & open-source |
| Logseq Sync | Cross-device sync service |
| Logseq Plugins | Community plugins for themes, workflow extensions, automation |
| Logseq Whiteboard | Visual whiteboard for mind maps and concept organization |
| Logseq Journals | Date-based journaling system for daily recording and review |
Core Strengths
- Free & Open Source: Fully open-source (AGPL licensed), all core features available without payment
- Block-level Outliner: Edit and manipulate at the block level with block references, embeds, and movement
- Local-first: Data stored in local Markdown / Org-mode files, users retain full ownership
- Org-mode Support: Supports both Markdown and Emacs Org-mode formats, attracting Emacs users
Competitive Landscape
| Competitor | Position | Differentiation |
|---|---|---|
| Obsidian | Local Markdown knowledge base | File browser style, larger plugin ecosystem |
| Roam Research | Block-based bidirectional notes | Online-first, subscription, commercial product |
| Notion | All-in-one collaboration | Online collaboration, databases, team workflows |
| Foam | VS Code knowledge base | VS Code extension, Roam-like links |
| Athens Research | Open-source Roam alternative | Discontinued development |
| Capacities | Object-based knowledge management | Object-oriented note system, AI integration |
Key Milestones
- circa 2015: Initial project conception as an open-source alternative to Roam Research
- 2019: Logseq formally founded, team began full-time development
- 2021: Logseq gained public traction and rapid GitHub Star growth
- 2022: Introduced Whiteboard feature for visual knowledge organization
- 2023: Launched Logseq Sync service for cross-device synchronization
- 2025: Continued core feature improvements with growing plugin ecosystem
- 2026: Active open-source community maintenance with ongoing iterations
