Shortlist by what you need
Start here if you know why you are leaving Swimm.
Want the closest match?
IBM watsonx Code AssistantMost similar to Swimm in what it does, its category and its price.
Visit (opens IBM watsonx Code Assistant in a new tab)Want the best rated?
Code MetalRated 4.0 out of 5 in our review, against 4.1 for Swimm.
Visit (opens Code Metal in a new tab)
At a glance
Green means better than Swimm, red means worse. Prices are starting prices per month.
| Tool | Our rating | Starts at | Free plan | Best for | Compare |
|---|---|---|---|---|---|
 SwimmBaseline | 4.1 | Not listed | No | Legacy modernisation as a service: static analysis first, then AI and senior engineers. | |
| IBM watsonx Code Assistant | 4.1Same | $2/mo | YesSwimm has none | Targets legacy Java and mainframe modernization, not just new feature code | vs Swimm |
 UFT One | 3.7−0.4 | Not listed | No | AI object detection and self-healing tests cut maintenance across desktop, web, mobile, and mainframe testing - the AI Transformation Assistant modernizes legacy scripts. | vs Swimm |
| Code Metal | 4.0−0.1 | Not listed | No | Formally verified code translation for aerospace, defense, and automotive systems | vs Swimm |
The alternatives in detail
In order of how closely each one matches Swimm.
IBM watsonx Code Assistant
4.1$2/mo
vs SwimmSameFree plan
Targets legacy Java and mainframe modernization, not just new feature code.
- Automated modernization recommendations for legacy Java and mainframe COBOL
- Customizable underlying model grounded in an organization's own codebase
- Visibility into the likely origin of generated code for compliance tracking
Legacy and mainframe modernization focus addresses a need no other coding tool here covers
Usage-based business pricing takes more estimation than a flat monthly tier
UFT One
3.7Not listed
vs Swimm−0.4
AI object detection and self-healing tests cut maintenance across desktop, web, mobile, and mainframe testing - the AI Transformation Assistant modernizes legacy scripts.
- AI object detection and mockup identification
- AI Transformation Assistant for legacy script modernization
- Self-healing tests that adapt to UI changes automatically
Self-healing tests reduce the constant maintenance burden of brittle UI locators
No public pricing - an enterprise sales process
Code Metal
4.0Not listed
vs Swimm−0.1
Formally verified code translation for aerospace, defense, and automotive systems.
- Formal verification proving functional equivalence, not just plausible output
- Auto-generated test suites reaching full MCDC coverage
- Static analysis segments codebases into independently verifiable components
Formal verification addresses certification requirements general coding tools ignore
Pricing isn't published, requires a sales conversation
FAQ
Questions people ask
Is Swimm free?
Swimm does not list a free plan. Check its pricing page for current plans.
What is the best free alternative to Swimm?
IBM watsonx Code Assistant is the highest-rated alternative here with a free plan (4.1 out of 5).
What is the cheapest alternative to Swimm?
Among paid plans, IBM watsonx Code Assistant has the lowest starting price (from $2/mo). If you need it free, start with IBM watsonx Code Assistant.
How did you pick these alternatives?
We match tools on what they do, their category and their price, using the details in our directory. Ratings come from our reviews and reader reviews.