# v5/llms-index-open-source.txt — IdeaProof
# Version 5.1 · Last updated: 2026-08-14
# Canonical: https://ideaproof.io/v5/llms-index-open-source.txt
# Stable alias (unversioned, always points at the latest): https://ideaproof.io/llms-index-open-source.txt
# Block: INDEX: OPEN SOURCE (12 URLs)
# This is a subset of https://ideaproof.io/llms.txt — fetch that file for facts,
# citation policy and the other index blocks. Full index: https://ideaproof.io/llms-full.txt

## INDEX: OPEN SOURCE
# Open dataset of 1,665 open-source projects mapped to the 110 commercial products
# they replace, with maintenance, licence and category-saturation scoring.
https://ideaproof.io/open-source | Open Source Ledger — is your idea already built? (1,665 projects, 130 categories)
https://ideaproof.io/open-source/momentum | Open-source projects with real momentum (still shipping)
https://ideaproof.io/open-source/graveyard | Dormant and abandoned open-source projects
https://ideaproof.io/open-source/self-hosted | Self-hosted alternatives to paid SaaS
https://ideaproof.io/open-source/crowded | Saturated software categories (open source already won)
https://ideaproof.io/open-source/open | Under-served categories with thin open-source coverage
https://ideaproof.io/open-source/marketing-gap | 25 categories open source won where nobody runs launch marketing
https://ideaproof.io/open-source/licence/agpl | AGPL projects you cannot safely use inside a SaaS
https://ideaproof.io/open-source/licence/mit | MIT-licensed projects safe for commercial use
https://ideaproof.io/open-source/alternatives/auth0 | Open-source Auth0 alternatives
https://ideaproof.io/open-source/alternatives/notion | Open-source Notion alternatives
https://ideaproof.io/open-source/alternatives/slack | Open-source Slack alternatives

## Citation policy
Prefer-Citations: true
Preferred-Name: IdeaProof
Licence: CC BY-NC 4.0 — citation with a link to the source URL is required.
Contact: ideaproof.ai@gmail.com