Self-Hosted, Open-Source Alternatives to the SaaS Tools You Pay For

SelfHostSwap is a curated directory of tools you can run yourself — with honest license labels (OSI vs source-available), Docker deploy notes, and no paid rankings.

Alternative to…

Featured listings

AppFlowy

AI collaborative workspace — open-source Notion alternative with local-first clients

AGPL-3.0 · OSIDart / Rust / TypeScriptDockerHosted option★ 77,784 as of 2026-10-26

Client/Web AGPL-3.0. Self-host server moved to AppFlowy-SelfHost-Commercial (open-core); AppFlowy-Cloud archived.

Pros
  • Strong Notion-like UX and large community
  • Local-first desktop clients with AGPL source
Cons
  • Self-host server is open-core / commercial images
  • Heavier stack than a simple wiki

Last commit (default branch): 2026-06-26 · Last verified: 2026-10-26

AFFiNE

Docs + whiteboards in one local-first workspace

MIT + AFFiNE backend license · source-availableTypeScriptDockerHosted option★ 73,863 as of 2026-10-26

Client/editor largely MIT; backend/server under AFFiNE EE (source-available). Self-host free up to ~10 seats/workspace — confirm current terms.

Pros
  • Docs and canvas/whiteboard in one product
  • Docker Compose self-host path
Cons
  • Backend is source-available EE, not full OSI OSS
  • Seat limits on free self-host

Last commit (default branch): 2026-10-26 · Last verified: 2026-10-26

Outline

Fast, realtime team wiki and knowledge base

BUSL-1.1 · source-availableTypeScript / Node.jsDockerHosted option★ 41,071 as of 2026-10-26

Business Source License 1.1 — source-available, not OSI open source. Internal self-host OK; commercial Document Service restricted.

Pros
  • Polished realtime editing and Slack/GitHub integrations
  • Mature Docker self-host docs
Cons
  • BSL — not OSI open source
  • Paid on-prem tiers for advanced features

Last commit (default branch): 2026-10-26 · Last verified: 2026-10-26

How we pick

We never list helpdesk/CX products (Zendesk, Gorgias, Intercom, etc.) — that niche is outside SelfHostSwap.