Logseq
Logseq is an open-source knowledge management platform using a graph database with block-based outliner notes. Local-first, with bidirectional links, PDF annotations, whiteboards, and a plugin ecosystem. Full data privacy with no required account.
- Location
- San Francisco, USA
- Raised
- $4.1M
- Stage
- Series A
- Founded
- 2020
- Category
- Open Source
- Funding
- VC-backed
- Team
- 10-50
Funding figures as of Jul 2025 · not independently verified
Founders of Logseq
- Tienson Qin
- Gabriel Horner
Investors backing Logseq
- Craft Ventures
- OSS Capital
Frequently asked questions
What does Logseq do?
Logseq is an open-source knowledge management platform using a graph database with block-based outliner notes. Local-first, with bidirectional links, PDF annotations, whiteboards, and a plugin ecosystem. Full data privacy with no required account.
Where is Logseq based?
Logseq is based in San Francisco, USA.
When was Logseq founded?
Logseq was founded in 2020.
How much has Logseq raised?
Logseq has raised $4.1M in their Series A round as of Jul 2025.
Who founded Logseq?
Logseq was founded by Tienson Qin, Gabriel Horner.
Who has invested in Logseq?
Logseq is backed by Craft Ventures, OSS Capital.
How Logseq would pitch themselves
○ Auto-generated01Target customer
Developers + open-source communities + enterprises wanting an OSS-first tool in this category, with optional commercial support.
02Problem they solve
Logseq is an open-source knowledge management platform using a graph database with block-based outliner notes. Local-first, with bidirectional links, PDF annotations, whiteboards, and a plugin ecosystem. Full data priva… The category has historically been served by tools that miss the modern workflow this product is built around.
03Key differentiator
Logseq differentiates on networked notes and knowledge graph. Backed by Craft Ventures + OSS Capital, $4.1M raised — the company has resources + validation to compound this thesis. Founded by Tienson Qin + team.
04Go-to-market strategy
Series-A scaling stage — building outbound sales motion, hiring first AEs, layering on customer success. Mix of PLG (where the product allows) + direct sales for higher-ACV deals.