Documentation · pricing
Doxygen pricing
Doxygen publishes a single tier. Below is what it costs, what it covers, and how that compares with the documentation tools listed alongside it.
As of 1 September 2026, Doxygen pricing is free. Figures are the vendor's list prices as recorded on this page's last check; the vendor's site is the final word.
- Entry price
- Free
- Model
- Open source, no licence fee
- Tiers
- 1
- Free tier
- Yes
Doxygen plans, side by side
Every published tier in ascending order of price, with the number of features each one lists. An absence here means the record does not itemise it, not that the tier lacks it.
| Plan | Price | Features listed | Step up from the tier below |
|---|---|---|---|
| Doxygen | Free | 3 | Entry tier |
Where Doxygen stops being free
Doxygen, Free
- Full functionality
- No usage limits
- Community mailing list and GitHub issue support
No paid tier on record
Doxygen lists a free tier and no priced tier above it in the record we hold.
What the product covers
The full Doxygen feature record, grouped as the catalogue groups it. This is the product as a whole; the record does not map every feature onto a specific tier.
Other
- Code comment parsing
- Multi-format output
- Call and inheritance graphs
- Markdown support
- CI-friendly build
People bring Doxygen in for an engineering team generating api reference documentation directly from source code comments as part of a ci build, a library or sdk maintainer who wants reference docs that cannot drift out of sync with the code because they are generated from it, an internal platform team documenting a large c++ or java codebase where structure like class hierarchies and call graphs matters more than prose, a project with no documentation budget that still needs professional-looking reference output without any licence cost. If that is not the job you are buying for, the alternatives to Doxygen are worth a look before you commit to a tier.
How that compares in Documentation
Too few documentation tools in this directory publish a starting price to quote a meaningful median, so the table below is a like-for-like list rather than a ranking.
| Tool | Entry price | Model | Rated | Head to head |
|---|---|---|---|---|
| Doxygen (this page) | Free | Open source, no licence fee | - | |
| Paligo | On request | Per author seat per year | - | vs Doxygen |
| Guidde | Free, then $19/month | Per creator per month | - | vs Doxygen |
| Adobe RoboHelp | On request | Per user per month, annual commitment | - | vs Doxygen |
| HelpDocs | On request | Per editor seat per month | - | vs Doxygen |
| MadCap Flare | On request | Per author per year, annual subscription only | - | vs Doxygen |
| Fumadocs | Free | Open source, no licence fee | - | vs Doxygen |
Ratings are aggregated from third-party sources and imported with each catalogue entry, they are not reviews hosted on Softwr. How each figure is used is set out on the Doxygen badges page.
Before you pay for Doxygen
Three things this page cannot tell you, and all three change the bill. The record carries a price and a billing period but not the unit - per-seat and flat-rate pricing are indistinguishable in this data, so a five-person team may be looking at five times the figure above. It carries no annual rate, so any discount for paying yearly is not something this page can quote. And it carries no trial length.
What it can tell you is the shape of the ladder: a single tier at Free. Because there is a free tier, the cheapest way to answer the rest is to use it before paying anything.
Doxygen runs on linux, macos, windows, and is published by Doxygen (open source project) of Community maintained. The full record is on the Doxygen review, and the rest of the category is under best documentation tools.
Doxygen pricing questions
- How much does Doxygen cost?
- Doxygen publishes a single tier, Doxygen, at Free.
- Does Doxygen have a free plan?
- Yes. The Doxygen tier costs nothing and covers full functionality, no usage limits, community mailing list and github issue support.
- Which documentation tools can I use without paying?
- 3 of the 8 documentation tools listed alongside Doxygen have a free tier: Guidde, Fumadocs, BookStack.
- What am I actually paying for with Doxygen?
- The record lists 5 features across 1 area: other. In practice it is brought in for an engineering team generating api reference documentation directly from source code comments as part of a ci build, a library or sdk maintainer who wants reference docs that cannot drift out of sync with the code because they are generated from it, an internal platform team documenting a large c++ or java codebase where structure like class hierarchies and call graphs matters more than prose.
- Does Doxygen charge per user?
- The record carries a price and a billing period for each of its 1 tiers, but not the unit that price is charged in. Per-seat and flat-rate billing look identical in this data, so check the vendor's page before budgeting for a team.
- Are these Doxygen prices current?
- They are what the catalogue entry holds, refreshed when the entry is. Vendors change pricing without notice and nobody at Softwr re-verifies each tier by hand, so treat this as a structured summary and the vendor's own pricing page as the authority.
- What should I compare Doxygen against before paying?
- The closest documentation tools in this directory are Paligo, Guidde, Adobe RoboHelp, HelpDocs. Each has a side-by-side comparison with Doxygen covering price, platforms and features.