SeaLights vs CodeSee

In the complex landscape of modern software development, understanding your codebase and ensuring its quality are paramount. While tools like CodeSee provide invaluable insights into code structure and changes, SeaLights focuses on the dynamic aspects of testing and quality.

While both CodeSee and SeaLights contribute significantly to a healthier software development lifecycle, they address different, albeit complementary, aspects of your code and quality.

Here's a comparison of their core functionalities:

Feature	SeaLights	CodeSee
Primary Focus	Continuous quality intelligence, optimizing testing, and identifying quality risks based on test execution.	Codebase visualization, understanding code structure, dependencies, and changes.
Analysis Type	Primarily Dynamic Analysis (collects data during test execution).	Primarily Static Analysis (analyzes code without running it).
Core Insights Provided	Test impact analysis (what tests to run), test gap analysis (untested changes), comprehensive test coverage data, quality trends.	Visual maps of code, architectural insights, dependencies, change impact visualization in PRs.
Code Review Contribution	Shows testing status of changed code in PRs, identifies untested areas.	Provides visual context for code reviews, helps understand impact of changes, dependency mapping.
Testing Integration	Integrates with all test types and runners (unit, functional, E2E, manual) to collect execution data.	Not directly involved in test execution or coverage collection.
Risk Identification	Identifies untested code changes (test gaps), assesses risk based on actual test execution coverage, flags quality gate failures.	Highlights architectural complexity, areas of high change frequency, potential dependency conflicts.
Deployment Stage Relevance	Spans development, testing, and pre-deployment stages (CI/CD pipeline).	Primarily design, development, and code review stages.
Ease of Use	User-friendly dashboards and reports for data consumption; requires initial technical setup for agent integration and pipeline configuration.	Visually intuitive for code exploration and understanding changes; lower technical setup for basic use.
Languages	Cross-language support	Supports a broad range of popular programming languages for code analysis (e.g., JavaScript, TypeScript, Python, Java, Go, Ruby, C#).
Cost	Paid (tiered by usage metrics: lines of code)	Commercial solution, typically subscription-based, often tiered by users or codebase size/activity.

Key Takeaways

• SeaLights and CodeSee are NOT competing tools, but complementary.

• Deepened Code Review: Use CodeSee to see changes and SeaLights TIA to know which tests validate those changes.

• Holistic Risk Identification: CodeSee identifies architectural/structural risks, while SeaLights reveals testing risks (untested code).

• Accelerated Onboarding: CodeSee helps understand what the code does, and SeaLights reveals how well it's tested, where potential testing blind spots exist, and which tests are most valuable to run based on recent development.

• Targeted Improvement: Pinpoint complex areas with CodeSee, then use SeaLights to ensure they have sufficient test coverage.

Overall Value: By combining CodeSee's visual intelligence with SeaLights' dynamic testing intelligence, teams gain unparalleled visibility into both what has changed and how well those changes have been validated, leading to faster development cycles, more informed decisions, and higher-quality software releases.