Writing and content decision
Lebonsynonyme
A single developer can reproduce the core synonym lookup, voting and suggestion features in ~30 hours and run it for a small audience; the site’s value is mostly content and traffic rather than hard-to-recreate moats so self‑hosting is practical.
Visit website↗Built by Nicolas Le Roux 🇪🇺, who ships 5 products in this index
Not priced
No pricing page we fetched carried a figure, so there is nothing to compare against. The build side is still real.
$50one-off30 h to build
$15/mo3 h/mo upkeep
No published price to break even against.
No open-source build does this yet
Nothing published replaces this one, so a replacement starts from an empty file. Here is what it would have to cover.
What a replacement has to do
- User enters a word → lookup synonyms → display list with votes → allow vote or submit suggestion → store updates and show updated ranking.
What it still won’t have
- Public site traffic, SEO and domain age that bring organic users
- Any existing user-contributed synonym corpus and history
- Polish and branding of the hosted site
What remains hard
- Product polish and ongoing maintenance
First-year cost
No published price
Lebonsynonyme does not publish a price we could read, so there is nothing to compare against. What building costs is below.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a minimal synonym lookup web app using Node.js + Express, Postgres, and React. Core features: 1) searchable synonym endpoint that returns an alphabetically ordered list; 2) frontend with search box, alphabet index, synonyms list, vote buttons, and suggestion form; 3) backend endpoints to record votes and submit suggestions; 4) simple admin endpoint to review/approve suggestions; 5) persist synonyms, suggestions and vote counts in Postgres; 6) input validation, rate limiting, error handling, and unit/integration tests. Out of scope: training NLP models or external paid APIs for synonym generation. Provide Dockerfiles and a deployment script for a small VPS, and health checks.
How we checked
How the score was reached
- Build verdict base78
- 3 cited sources+3
- 3/3 assessment runs agreed+4
- Evidence score85
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time - so the same evidence always produces the same number.
How scoring works →Cited sources · 3
Every page the run actually retrieved.
- official productLe Bon Synonyme — home
- official pricingLe Bon Synonyme — pricing (page contains no prices)
- official docsLe Bon Synonyme — features/docs (site content)
Integrity checks
What held up, and what did not.
