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Swimm
What Swimm is
Swimm helps teams understand and modernize codebases by combining deterministic code analysis, AI, and subject-matter expertise. It maps dependencies, data flows, and relationships across repositories into a structured view of a system. Swimm says it can work with codebases containing millions of lines and lists native support for more than 40 modern and legacy programming languages, including COBOL, Fortran, and Assembly. Its modernization offerings include API-first architecture, large-scale migrations, and an agentic context layer. That layer builds a codebase knowledge base for tools such as Copilot, Cursor, Claude Code, internal agents, and MCP servers. Swimm also describes auto-generated documentation and visualizations of flows with explanations. It supports cloud, on-premise, and air-gapped deployments, with access through web, API, and self-hosted platforms. The company states that it is SOC 2 and ISO 27001 compliant, with reports available upon request. Pricing is custom and based on the number of lines of code to be understood; proof-of-concept options are available. The product is intended for organizations dealing with complex legacy code, microservice architectures, or regulatory constraints.
Who it suits
Swimm is aimed at organizations modernizing complex legacy codebases, microservice architectures, or systems with regulatory constraints. Its deployment options may suit teams that require cloud, on-premise, or air-gapped environments.
What it does well
- Maps dependencies and data flows across repositories
- Supports more than 40 programming languages
- Offers cloud, on-premise, and air-gapped deployment
- Builds codebase context for AI coding tools
What to know first
- Pricing is available on request
- Pricing depends on lines of code
- Compliance reports are available upon request
Limits
Pricing is custom and based on the number of lines of code the customer wants to understand. Proof-of-concept options are available under the custom engagement pricing plan.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Custom engagement pricing | Pricing is based on the number of lines of code; proof of concept options are available; supports cloud, on-prem, and air-gapped deployments | On request |
As swimm.ai lists them, read 9 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Swimm website
- Choose a cloud, on-premise, or air-gapped deployment approach
- Connect source, legacy, mainframe, or cross-repository code
- Set up repository synchronization and automatic updates
- Request custom pricing based on the lines of code to understand
- Select supported tools or an internally available LLM for the codebase knowledge layer
Verdict
Swimm focuses on codebase understanding and modernization, including large-scale migrations and context for AI tools. Teams should request pricing based on their code volume and consider which deployment model they need.
Questions
How is Swimm priced?
Swimm is paid software with pricing available on request. Pricing is based on the number of lines of code the customer wants to understand.
Which platforms does Swimm support?
Swimm lists web, API, and self-hosted platforms. Deployment can be cloud, on-premise, or air-gapped.
What code can Swimm work with?
It covers source code, legacy code, mainframe code, and code spread across repositories, with native support for more than 40 languages.
Which AI tools can use Swimm’s knowledge base?
Swimm names Copilot, Cursor, Claude Code, internal agents, and MCP servers.
Can customers choose an LLM?
Swimm says customers can use an internally available LLM, including Azure OpenAI Service or OpenAI Enterprise.
Does Swimm provide security compliance information?
Swimm states that it is SOC 2 and ISO 27001 compliant, with reports available upon request.
Facts from Swimm's own pages
- AI context
- The agentic context layer builds a codebase knowledge base for tools including Copilot, Cursor, Claude Code, internal agents, and MCP servers. · swimm.io, 9 Oct 2026
- Codebase scale
- Swimm says its process can work with codebases containing millions of lines of code. · swimm.io, 9 Oct 2026
- Deployment
- Swimm says it supports cloud, on-premise, and air-gapped deployments. · swimm.io, 9 Oct 2026
- Documentation
- Swimm describes auto-generated documentation and visualizations of flows with detailed explanations as product capabilities. · swimm.io, 9 Oct 2026
- Headquarters
- The opened maker pages reviewed do not state Swimm’s headquarters. · swimm.io, 9 Oct 2026
- Integrations
- Swimm’s current site names Copilot, Cursor, Claude Code, internal agents, and MCP servers as tools its knowledge base can support. · swimm.io, 9 Oct 2026
- Language support
- Swimm lists native support for 40+ modern and legacy programming languages, including COBOL, Fortran, and Assembly. · swimm.io, 9 Oct 2026
- LLM choice
- Swimm says customers can use an internally available LLM, including Azure OpenAI Service or OpenAI Enterprise. · swimm.io, 9 Oct 2026
- Modernization work
- Its offerings cover API-first architecture, an agentic context layer, and large-scale migrations. · swimm.io, 9 Oct 2026
- Pricing basis
- Pricing is based on the number of lines of code the customer wants to understand. · swimm.io, 9 Oct 2026
- Security
- Swimm states that it is SOC 2 and ISO 27001 compliant, with reports available upon request. · swimm.io, 9 Oct 2026
- System understanding
- Its platform maps dependencies, data flows, and cross-repository relationships into structured system understanding. · swimm.io, 9 Oct 2026
- What it does
- Swimm combines deterministic code analysis, AI, and subject-matter experts to help teams understand and modernize codebases. · swimm.io, 9 Oct 2026
- Who it is for
- Swimm describes its work as modernization for organizations with complex legacy codebases, microservice architectures, or regulatory constraints. · swimm.io, 9 Oct 2026
Where Swimm stands on Freedom251
- AI Documentation Generators#28 of 28