Swimm
Verified Oct 16, 2026 ActiveStatic analysis plus AI that reads legacy code and writes the documentation and diagrams a migration team needs.
Listed on EffectHub ·
Pricing
- Pricing model
- Contact sales
No public price list. Engagements are quoted as four fixed-price stages that you can commit to one stage at a time; every path on the site ends at a call.
Use tool ↗About Swimm
Swimm started in 2019 as a continuous-documentation tool that kept written docs pinned to the code they described, with IDE and CI hooks that flagged the docs when the code moved. It now sells that engine as an application-understanding layer for modernisation work: it parses mainframe, .NET and Java estates, traces job flows and variables, extracts the business rules buried in old code, and produces searchable docs and diagrams for both engineers and the people signing off the migration. The Tel Aviv company runs it as a service, quoted as four fixed-price stages you commit to one at a time, so there is no self-serve price list.
- Platforms
- Web · VS Code extension
- API
- Not confirmed
- Last verified
- Oct 16, 2026
Verified sources
- Homepage sells staged, fixed-price modernisation engagements built on static analysis plus AI, with no price listswimm.io ↗
- About page names co-founders Oren Toledano and Gilad Navot and describes Swimm as a product-enabled service companyswimm.io ↗
Is Swimm legit?
We don’t label tools safe or unsafe. Below are the records we checked ourselves, each with the date we read it.
- TLS certificate
- Issued by Let's Encrypt, valid until Nov 21, 2026Seen in our own connection to the site on Oct 16, 2026
- Last checked
- Oct 16, 2026The site answered
- On the market since
- 2019The vendor's own material, read by us
- Operated by
- Swimm, IsraelOur research, card verified Aug 23, 2026
Pros & cons of Swimm
Swimm is the rare documentation tool that treats old code as the source of truth instead of asking humans to describe it. If you are staring at a COBOL or .NET estate nobody understands, the flow maps and extracted business rules are the useful part. The catch is that it is no longer a tool you can simply buy: it is a staged engagement with engineers attached, and the self-serve documentation product it was known for is not what the site sells today.
Pros
- Deterministic static analysis backs the AI output, so traces come from the code rather than a guess
- Produces diagrams and flow maps, not only prose
- Covers mainframe and COBOL alongside .NET and Java
- Work is broken into fixed-price stages you can stop after
Cons
- No pricing published anywhere on the site
- Repositioned away from the continuous-documentation product it was known for
- Aimed at large estates, which makes it overkill for a normal repository
Best for
- Teams documenting a mainframe or legacy .NET/Java estate before a migration
- Architects who need job-flow and variable traces out of unfamiliar code
- Enterprises that want non-engineers to read what the code actually does
Not for
- Small teams wanting a cheap self-serve docs subscription
- Anyone who needs a published price before talking to sales
Watch out: Directory listings still describe Swimm as a code-documentation subscription. The site today sells a staged modernisation service, so check what you are actually buying.
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