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Open source alternatives to Second Brain
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Open source alternatives to Second Brain

Open source startups in the same category as Second Brain, ranked by GitHub stars and growth. Each repository is verified as belonging to the startup.

StartupRepositoryStars+30d90 daysLicense
AFFiNE toeverything/affine 73,459 — AFFiNE: GitHub stars, last 90 days —
Joplin laurent22/joplin 56,714 +473 Joplin: GitHub stars, last 90 days Other
Joplin laurent22/joplin 56,714 +473 Joplin: GitHub stars, last 90 days Other
Protégé protegeproject/protege 1,580 +72 Protégé: GitHub stars, last 90 days Other
OmniBox import-ai/omnibox 1,522 +38 OmniBox: GitHub stars, last 90 days Apache-2.0
Lokus lokus-ai/lokus 822 +32 Lokus: GitHub stars, last 90 days Other
Gray Box aaryanverma/graybox 263 +17 Gray Box: GitHub stars, last 90 days —
Heptabase heptameta/heptabase-cli-skills 154 +3 Heptabase: GitHub stars, last 90 days MIT
DocsMint hiai-gg/docsmint 118 +66 DocsMint: GitHub stars, last 90 days Apache-2.0
Mdit - Markdown Notes hjinco/mdit 86 +2 Mdit - Markdown Notes: GitHub stars, last 90 days Apache-2.0
Dumbnote baibao577/dumbnote-page 75 0 Dumbnote: GitHub stars, last 90 days —
Gessential mirarr-app/gessential 26 0 Gessential: GitHub stars, last 90 days MIT
Stacks betterstacks/halycron 25 — Stacks: GitHub stars, last 90 days MIT
AI Chat Widget + Notion bulkpe-fintech/docs-ai-opensource 19 0 AI Chat Widget + Notion: GitHub stars, last 90 days —
Anql anqlproject/anql 16 +10 Anql: GitHub stars, last 90 days —
jot — a terminal notebook intina47/jot 6 0 jot — a terminal notebook: GitHub stars, last 90 days AGPL-3.0

Data: GitHub APIAll open source startups →