UND Assay alternatives
Tools that do what UND Assay does, found by what they say they do rather than by shelf. Among the equally alike, the most used come first. Each line says how it differs from UND Assay.
Read 2026-11-03
With a free plan or free to use: Snyk, CodexGuild, Sonar, GitHub, GreenCalculus, attestd.
- #1

GitLabDeveloper toolsMCP · sign-in
Hosts source repositories, CI/CD pipelines and security scanning, with AI agents running under the same merge request approvals and audit trail.
Also: Workflow automationMore widely used
591kActive2011 - #2

SnykSecurity
Scans source code, open source dependencies, container images and infrastructure-as-code for vulnerabilities, and suggests fixes in the IDE, CLI and pull requests.
Free planAlso: Code generation, Agents
63.1kActiveFrom $25/mo2015 - #3

CodexGuildDeveloper toolsMCP · sign-in
Connects AI coding agents to version-matched library docs, known error fixes, package checks and scanned skills.
Free planMore widely used
3.8k installs/moActiveFrom $10/mo - #4

SonarDeveloper tools
Analyzes source code statically in IDEs, CI pipelines and pull requests, reporting bugs, code smells, vulnerabilities and coverage against quality gates.
Free planMore widely used
72.4kActiveFrom $34/mo2007 - #5

Major LabsDeveloper toolsMCP · open
Runs weekly scans of public MCP servers for authentication gaps and risky code, and tracks frontier lab safety frameworks by versioned snapshot.
Also: Monitoring, EvaluationMore widely used
Little sign of useActive - #6
AppsFlyerDeveloper tools
Attributes mobile app installs and in-app events to ad sources, routes users via deep links, and filters fraudulent traffic.
Also: AnalyticsMore widely used
102k2011 - #7

GitHubDeveloper tools
Hosts Git repositories with pull requests, code review, issue tracking and Actions pipelines for building, testing and deploying code.
Free planAlso: Workflow automation, Code generation
42MActiveFrom $4/user/mo2007 - #8

GreenCalculusDeveloper toolsMCP · open
Serves sourced emission factors over an API and MCP, returning each value with its source cell, data version and public URL.
Free planMore widely used
287Active2025 - #9

CodeRabbitCoding
Automatically reviews pull requests, prioritizes them by risk, and scans for security vulnerabilities.
Also: Code generation, AnalyticsMore widely used
24.4kActiveFrom $24/user/mo2023 - #10

attestdSecurity
Queries software versions against public vulnerability data to return deterministic risk states for deployment decisions.
Free planMore widely used
195 installs/moActiveFrom $19.99/mo
← UND Assay: the full cardAll Developer tools tools →
How this list is made: the words UND Assay is described with (what it does, for whom, what it is used for) are matched against every tool in the Atlas. A tool on the same shelf, or doing the same kind of work, counts for a little more. Nothing here is paid for.
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