- Specialty
- Free retirement simulator
- Address
- Open-source web tool, Online
- Website
- www.cfiresim.com
cFIREsim
Monte-Carlo retirement simulator using historical market data.
Free, open-source FIRE/retirement Monte-Carlo simulator. Models historical market sequences to test withdrawal-rate strategies. Widely cited in financial-independence communities.
Services
Best for
Want To Retire · Financial Independence
Tier
○ ListedConfirmed real and contactable. No quality claim — we have not personally engaged or peer-checked them.
Why this tier
Free, open-source FIRE simulator widely used in retirement-planning forums.
Last verified: 1 May 2026
Confirmed real entity with valid contact details. No quality claim — we have not personally engaged or peer-checked them.
Has public peer recognition (e.g. Doyle’s Guide) or charity-register confirmation, with citations on the profile.
Personally engaged by HisJourney — we have spoken to them or worked with them ourselves before listing.