Open-source alternatives to paid AI tools

SkipTheSub / Notion AI

Open-source alternatives to Notion AI

Monthly price for Notion AI: Plus $10/seat/mo; Business $20/seat/mo (source) . Below: 2 open-source alternatives.

AppFlowy-IO/AppFlowy

What it can do

Bring projects, wikis, and teams together with AI. AppFlowy is the AI collaborative workspace where you achieve more without losing control of your data. The leading open source Notion alternative. (GitHub project description) source

What it can't do

TBD

Minimum hardware

TBD

Setup difficulty

TBD

Freshness

Stars
77,463
Last push
2026-10-08
Latest release
0.14.8

Running cost (per month, roughly)

VPS: TBD — minimum RAM not verified

Local electricity: $ —/mo watts / 1000 × hours/day × 30 × 0.1831 $/kWh source

Fetched 2026-10-16 from the GitHub API.

Open on GitHub

siyuan-note/siyuan

What it can do

An open-source, privacy-first, self-hosted knowledge workspace where humans and AI agents work together 开源、隐私优先、自托管的知识工作空间，让人与智能体在此协作 (GitHub project description) source

What it can't do

TBD

Minimum hardware

TBD

Setup difficulty

2/5 — Single documented command (docker run / pip / npm / brew install) source

Freshness

not fetched yet

Running cost (per month, roughly)

VPS: TBD — minimum RAM not verified

Local electricity: $ —/mo watts / 1000 × hours/day × 30 × 0.1831 $/kWh source

Open on GitHub

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