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Project Euler is a series of challenging mathematical/computer programming problems that will...

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AddressIntel: SF Peninsula real-estate intelligence. Track San Mateo and Santa Clara county building permits by city and address, plus off-market teardowns and spec-build opportunities with developer ROI worked out.

Which is more popular?
Based on our record, Project Euler seems to be more popular. It has been mentioned 415 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | projecteuler.net | addressintel.co |
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| Platforms | — | |
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Project Euler yet.
AddressIntel is a real-estate intelligence platform for the SF Peninsula and South Bay. Track building permits across San Mateo and Santa Clara counties, search them by city and address, and surface off-market teardown candidates and zoning changes, so spec builders, flippers, and agents can spot...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of AddressIntel yet.
Walkthroughs and reviews on video.
Project Euler Challenges 1–4 - Coding Challenges with Florin
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Project Euler and AddressIntel.
AddressIntel's answer:
AddressIntel goes deep on one region instead of thin across the whole country. It parses building permits every day from each San Mateo County and Peninsula city portal, then joins them to parcel, zoning, and hazard data so you can see teardown and spec-build potential for a specific address. Most property-data platforms are national and treat permits as a footnote, so Peninsula coverage is stale or missing the smaller city systems entirely. Here the permit record is the core signal: refreshed daily, searchable by city, address, architect, or contractor, and scored for development upside.
AddressIntel's answer:
Depth and recency in one market. National platforms cover the whole country, but their Peninsula permit data is often stale, incomplete, or missing the smaller city portals altogether. AddressIntel pulls directly from each municipal system on the Peninsula, so permits surface within a day of being issued. It also does the underwriting math rather than handing you raw records: teardown versus rebuild, projected developer ROI, and comparable sales. There is a free tier, so you can test the data quality against your own market knowledge before paying anything. If you work outside the SF Peninsula, a national tool is the better fit, and we would say so.
AddressIntel's answer:
Spec builders, developers, flippers, and listing agents working the San Francisco Peninsula, roughly from Daly City down through Palo Alto plus adjacent Silicon Valley cities. The typical user is sourcing off-market teardown or rebuild opportunities and wants to see a permit or a zoning change before it becomes common knowledge. A secondary audience is analysts and investors who want clean, structured Peninsula permit data through an API instead of a dashboard. It is deliberately a niche tool: if you need national coverage, this is not the right product.
AddressIntel's answer:
It started as a personal frustration. Tracking building permits on the Peninsula meant checking a dozen separate city portals, each with its own search form, export quirks, and refresh schedule, and none of them talk to each other. There was no single place to ask a simple question like which properties pulled demolition permits in Menlo Park this month. AddressIntel began as a set of scrapers and normalizers for those municipal systems, then grew into parcel scoring, zoning and SB9 analysis, and daily market tracking once it became clear the permit record is the earliest reliable signal that a property is about to change hands or change shape.
AddressIntel's answer:
The web app is Next.js 16 and React 19 in TypeScript, styled with Tailwind CSS and deployed on Firebase App Hosting. Data lives in PostgreSQL behind Firebase Data Connect, with Firebase Auth for accounts and Stripe for billing. Maps are Leaflet and react-leaflet over OpenStreetMap tiles, and charts use Recharts. The permit ingestion pipeline is Python, scraping and normalizing each municipal permit system (Accela, eTRAKiT, EnerGov, and open-data APIs) on a daily schedule, with building footprints from OpenStreetMap and the Overture Maps Foundation under ODbL.
Share your experience with using Project Euler and AddressIntel. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Project Euler provides a large collection of challenges in the domain of computer science and mathematics. The challenges typically involve writing a small program to figure out the solution to a clever mathematical...
If you are studying algorithms and computer programming, chances are you’ve heard of Project Euler. A collection of mathematical problems made for problem solvers who are interested to combine mathematics and...
We have no reviews of AddressIntel yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Let's hope this is going to help me solve some more Project Euler [1] problems! [1] https://projecteuler.net/. - Source: Hacker News / 5 months ago
Https://projecteuler.net/ for "Thinker" brain food. (it still has the issue of not being a pragmatic use of time, but there are plenty interesting enough questions which it at least helps). - Source: Hacker News / 8 months ago
I have a Project Euler (https://projecteuler.net/) account. Though I do not register at all on the leader board I will sometimes work obsessively on a problem just to make one of the level icons light up for me. There is not really... - Source: Hacker News / 10 months ago
Tracking AddressIntel since Jul 2026.
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