Coveralls vs DeepSource
Coveralls and DeepSource are both popular tools in the Code Review & Testing space. Both use a freemium pricing model, with Coveralls starting at Free and DeepSource at Free. Both offer a free tier to get started. Below we break down features, pricing, strengths, and weaknesses to help you decide which tool fits your workflow best.
Last updated: March 2026
Quick Verdict
Choose Coveralls if you want track code coverage over time and ensure test quality in every pr.. Coveralls's biggest strengths include simple setup with most ci providers and free for open-source projects. Choose DeepSource if you prefer automated code quality and security analysis for modern teams.. Key advantages include autofix prs save significant remediation time and free for open-source projects. It's also rated higher (4.3 vs 3.9).
Track code coverage over time and ensure test quality in every PR.
Automated code quality and security analysis for modern teams.
| Coveralls | DeepSource | |
|---|---|---|
| Pricing | Free | Free |
| Free Tier | Yes | Yes |
| Pricing Model | Freemium | Freemium |
| Rating | ★ 3.9 | ★ 4.3 |
| Categories | Code Review & Testing | Code Review & Testing |
| Key Features | 6 features | 6 features |
| Feature | Coveralls | DeepSource |
|---|---|---|
| Code coverage tracking and trend analysis | ✓ | — |
| Pull request coverage reporting | ✓ | — |
| Coverage threshold enforcement | ✓ | — |
| Support for all major languages and CI services | ✓ | — |
| Historical coverage data and charts | ✓ | — |
| Badge generation for repository READMEs | ✓ | — |
| Static code analysis across multiple languages | — | ✓ |
| Automated fix generation with Autofix PRs | — | ✓ |
| Security vulnerability detection | — | ✓ |
| Code coverage tracking and enforcement | — | ✓ |
| GitHub, GitLab, and Bitbucket integration | — | ✓ |
| Custom analysis rules and configurations | — | ✓ |
Coveralls
Pros
- + Simple setup with most CI providers
- + Free for open-source projects
- + Clean interface for tracking coverage trends
- + Good GitHub integration with PR checks
Cons
- − Less feature-rich than Codecov
- − UI feels dated compared to newer alternatives
- − Limited analytics on paid tiers
DeepSource
Pros
- + Autofix PRs save significant remediation time
- + Free for open-source projects
- + Broad language support with deep analysis
- + Clean dashboard for tracking code health
Cons
- − Some language analyzers more mature than others
- − Can produce false positives on complex patterns
- − Enterprise features require paid plan
The Bottom Line
Choose Coveralls if: you want track code coverage over time and ensure test quality in every pr.. It's completely free to use. Keep in mind: less feature-rich than codecov.
Choose DeepSource if: you prefer automated code quality and security analysis for modern teams.. It's completely free to use. It holds a higher user rating (4.3 vs 3.9). Keep in mind: some language analyzers more mature than others.
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