50M+ lines of code analyzed

Application Code Comprehension Platform for
Instant Documentation

Explayn gives you complete application visibility across legacy or modern tech stacks. Turn raw code into functional and technical documentation, architecture diagrams, API maps and more - 0 tribal knowledge required.
Healthtech
Worth: ~$110B
Social Media / Technology
Worth: ~$1.1T
Financial Services
Worth: ~$60B–$70B
Healthcare
Worth: ~$18B
Fintech
Worth: ~$200M–$300M
Healthtech
Worth: ~$110B
Social Media / Technology
Worth: ~$1.1T
Financial Services
Worth: ~$60B–$70B
Healthcare
Worth: ~$18B
Fintech
Worth: ~$200M–$300M
Healthtech
Worth: ~$110B
Social Media / Technology
Worth: ~$1.1T
Financial Services
Worth: ~$60B–$70B
Healthcare
Worth: ~$18B
Fintech
Worth: ~$200M–$300M
Challenges

The Hidden Cost of Not Knowing Your Own Codebase

Poor codebase comprehension shows up fast: missed dependencies, brittle tests, failed refactors

Codebase Visibility (Modern & Legacy)

Dev teams lose up to 60% of their time just understanding unfamiliar codebases whether it’s a monolith from 2005 or a microservice deployed last quarter.

Understand Before You Modernize

Not sure if, when, or how to modernize? IQ gives your teams and stakeholders a clear picture of the current state - data flows, API usage, architectural risks, and hotspots.

Onboarding After Reorgs or Attrition

Reorgs, churn, new hires - when the original context is gone, IQ steps in. It gives teams an instant view of how the system works: APIs, data flows, architecture, and risks.

Refactoring with Confidence

Splitting services, upgrading frameworks, cleaning up tech debt - IQ flags what breaks if you touch a file, who owns it, and what else gets impacted. That’s system-wide impact analysis, out of the box.

Eliminating Documentation Drift

Documentation usually drifts within 3 sprints. IQ keeps it in sync with every commit, with human-in-the-loop refinement where needed.

Reducing QA Guesswork

QA shouldn’t be guessing what to test. With IQ, they see exactly what changed in the code and what it touches - so they can test the right things, faster.

Maintaining Architectural Integrity

Modern applications drift too. IQ monitors your architectural standards and flags violations, so your system doesn’t devolve into a spaghetti mess over time.

Features

Make Your Codebase Legible Again

Everything you need to understand, document, and manage a codebase, powered by source code intelligence and human-in-the-loop refinement.

Always-Up-to-Date Documentation

Structured docs, always in sync with your code. Auto-generates PRDs, FSDs, API refs, integration maps, and platform-specific formats.

Dependency Graph

Get a live, explorable graph of modules, services, UI flows, ownership zones, and dependencies. Filter by domain, tech layer, or risk.

Impact Analysis

Click any file or function to see downstream impact, dependency chains, and risk zones. Plan changes and pull requests with full visibility.

Complete System Inventory (SBOM)

Every screen, API, function, and package. Generates a full software bill of materials for audits, compliance, or just better ownership.

Human-in-the-Loop

You can edit, approve, and interact with the platform like an assistant and it learns.

Architecture Drift Alerts

Highlights where your codebase is slipping from target architecture or compliance rules.

Codebase Assessment

Generate a diagnostic view of your codebase: tech debt, risk zones, structural integrity, maintainability, and refactor hotspots

Understand Any Application in 3 Steps

See what your system does, how it’s built, and where it breaks, in one scan.
Step 1

Connect Your Codebase

Give us access to your repo. We support Git, cloud storage, or direct upload.

Step 2

Auto Generate Documentation

We extract APIs, screens, logic flows, dependencies, architecture, and technical debt, instantly.

Step 3

Edit, Export, and Stay in Sync

Make changes, give feedback, export docs, and we’ll auto-update as your codebase evolves.

Built for Those Who Own the Codebase, and the Consequences

Designed to serve every stakeholder accountable for system stability, velocity, and architectural clarity

For CIOs & Modernization Owners

Get complete clarity before pitching or executing legacy transformation.

Legacy audits
RFP scoping
App rationalization
Legacy audits
RFP scoping
App rationalization

Get a full view of architecture, data flows, APIs, and hotspots before you modernize

Scope modernization projects with clear boundaries and ROI proof

Build stakeholder confidence with instant, visual outputs

For Engineering Managers & Tech Leads

Slash onboarding time, maintain architectural integrity, and keep velocity high.

Legacy audits
RFP scoping
App rationalization
Developer Productivity
Onboarding
Delivery Acceleration
System Handoffs

Eliminate tribal knowledge bottlenecks and get new devs productive faster

Automatically generate system maps, ownership zones, API flows & integration logic

Cut onboarding time by up to 50% after reorgs, attrition, or acquisitions

For Software Architects

Track drift, map current-to-target state, and make architecture decisions with live code visibility.

Legacy audits
RFP scoping
App rationalization
Architecture audits
Modernization prep
System re-architecture

Auto-generate dependency graphs, domain boundaries, and system flows

Detect architectural drift early, before it costs you

Refactor with clarity: know what breaks and who owns it before you start

For QA & Compliance Heads

Know exactly what changed, what to test, and what to submit for audits.

Legacy audits
RFP scoping
App rationalization
Regression QA
Change-based testing
SOC2/SBOM readiness

Instantly identify impacted modules and risk zones after every commit

Focus QA efforts with precise change maps and test targets

Auto-generate SBOMs and export-ready compliance artifacts

Choose Your First Step Into Code Clarity

Pick what suits your team: get export-ready docs from a free code scan, or walk through the platform with our CTO. Either way, you’ll get a clear picture of what Explayn can do for your codebase.
Free Codebase Scan
Guided Demo

Get a Free Codebase Scan Zero Commits

We’ll scan a portion of your codebase (legacy or modern) and deliver export-ready documentation, architecture maps, dependency graphs, and system insights all in 3–5 days.

What You’ll Receive:

Architecture diagrams
Risk & complexity heatmap
API references & integration maps
Full export of all generated assets
Ownership zones
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See the Platform in Action

In a 45-minute live walkthrough, we’ll show you exactly how Source Code IQ maps systems, flags risks, and auto-documents even your most complex applications.

What You’ll See:

Real-time architecture visualization
AI-powered code comprehension workflows
SBOM generation, drift detection, and more
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Frequently 
Asked Questions

Get answers to commonly asked questions.

Contact Us

Can Explayn generate documentation automatically?

Yes. It creates documentation from your source code - including API details, architecture diagrams, user flows, and more. It stays up to date as your code changes, eliminating documentation drift.

Is Explayn only for modernization projects?

Not at all. While it accelerates legacy modernization, it’s equally valuable for onboarding, impact analysis, architecture planning, compliance, and day-to-day application maintenance.

What tech stacks does Explayn support?

We support major enterprise stacks, including Java, .NET, Python, Node.js, React, Angular, and more. New language support is added regularly based on customer demand.

How accurate is the documentation generated?

We combine code analysis with a human-in-the-loop process to ensure high accuracy. Teams can fine-tune the output, and the system continuously learns and improves.

How long does it take to get results?

Initial documentation can be generated within a few hours. Full review and refinement typically takes 3–5 days depending on app size and complexity.

Can I use Explayn without existing documentation?

Yes. All we need is your codebase. If you have other inputs (wireframes, videos, specs), we can incorporate those to improve documentation quality - but they’re optional.

What’s the pricing model?

We use a credit-based model based on lines of code analyzed. Platform access and auto-sync features may have a fixed subscription component. Contact us for custom pricing.