Migrate Legacy AngularJS Applications to Angular, React, or Vue 50–70% Faster

Legacyleap is an enterprise migration tool that compresses legacy AngularJS codebase discovery, migration planning, framework selection, code modernization, and testing with a unified agentic platform while preserving 100% functional parity.

Unleash Unmatched Modernization Velocity with Legacyleap

Legacyleap sets new benchmarks for application modernization initiatives using Gen AI

2-5 days to assess and document the entire legacy application

~70% modernization automated by Gen AI

2x Faster modernization timelines vs. vendors or in-house

100% functional parity, validated and compliant

PLATFORM

An Agentic Modernization Platform Custom-Tuned for AngularJS Applications

Legacyleap uses a coordinated set of agents to handle every phase of AngularJS migration with the same context and discipline as your own senior engineering team. Every decision is grounded in your actual AngularJS codebase and business logic.

Assessment Agent

Start by Understanding Your Legacy AngularJS Application

Upload your legacy codebase and generate a full assessment that surfaces risks, dependencies, and modernization readiness within 2-3 days.

Technical Debt Report

Code Issues

Security Vulnerabilities

Modernization Hotspots

Documentation agent

Instantly Generate Functional and Technical Documentation

The Documentation Agent derives accurate documentation directly from your AngularJS codebase and observed behavior, without relying on tribal knowledge.

Controller and service interaction maps

UI flow and state transition documentation

API and integration maps

Functional and technical documentation

Dependency and integration diagrams

Recommendation agent

Generate an Execution-Ready AngularJS Migration Plan

The Recommendation Agent generates a concrete AngularJS migration plan tied directly to your codebase. It determines what should be modernized, in what order, and which target framework to move to across Angular, React, or Vue.

Target framework selection

Refactor, replace, retain decisions

Ordered migration phases

Module-level effort and risk

Modernization agent

Automate -70% Legacy AngularJS Code Migration

The Modernization Agent executes the migration plan by modernizing AngularJS code incrementally while keeping delivery moving. It applies framework upgrades, refactors code, and structures changes in controlled steps.

Modernized and refactored code

Generated pull requests

Migration gap reports

Actionable to-do lists

QA Agent

Validate AngularJS Modernization With Proven Functional Parity

The QA Agent validates the modernized application against the original AngularJS system. It generates and executes tests based on real application behavior to ensure parity before release.

Unit test cases

Integration test cases

Regression test cases

API test coverage

Parity validation reports

Functional tests

Try Legacyleap

Test Legacyleap on Your Legacy AngularJS Codebase for $0 + Get Free Documentation

We’ll scan a portion of your codebase and deliver export-ready functional and technical documentation, architecture maps, dependency graphs, and technical debt insights all in 3-5 days. No obligation.

AngularJS Migration Paths Supported by Legacyleap

The platform evaluates your codebase, determines the migration path, and executes it end-to-end.

Legacy Application

Migrate to Angular

For AngularJS systems built around structured workflows and long-lived business logic.

This path focuses on preserving architectural discipline, enforcing clear boundaries, and setting the application up for long-term stability.

Migrate to React

For AngularJS applications where UI complexity is high and change is constant.

This path prioritizes flexible component boundaries, faster iteration, and cleaner separation of UI from business logic.

Migrate to Vue

For AngularJS systems that need to move forward without disruption.

This path supports incremental modernization, parallel execution, and phased replacement while keeping delivery moving.

Is Legacyleap Right for Me?

Choose between full-service delivery or platform access, both built to get you to production faster and safer.

You bring the system. We bring the outcome.

Turnkey Modernization Services

We take full ownership from start to finish, combining engineering expertise with platform accountability.

Leverage your internal or SI teams with our platform.

Platform Licensing

Deploy Legacyleap within your environment and modernize at your own pace, with full control, tools, and support.

Legacyleap in Action

Insider Notes: Building a Gen AI System for AngularJS Modernization

Frontend Migration
AngularJS Modernization
GenAI for App Modernization
Modernization Strategy

A grounded look at how GenAI changes the mechanics of AngularJS assessment, planning, and modernization in 2026

Book a Demo

See Legacyleap in Action

Legacy modernization doesn’t have to take years of discovery and millions in risk. In this live demo, we’ll show you how Legacyleap autogenerates the artifacts, plans, and code transformations needed to compress months of manual work into days.

What You’ll See:

Real-time architecture visualization

SBOM generation

AI-powered code comprehension

Drift detection, and more

Legacyleap platform with code analysis, dependency visualization, and modernization summary.

Frequently Asked Questions

Didn't find what you were looking for?

AngularJS is no longer actively supported for security updates or long-term maintenance. Applications running AngularJS face increasing risk related to browser compatibility, security exposure, and hiring constraints. Most teams now treat AngularJS as technical debt that needs active modernization.

The safest approach is to start with full codebase assessment and dependency mapping, followed by incremental modernization with continuous validation.
Legacyleap is built around this approach, using agentic GenAI to understand system behavior before any migration decisions are executed.

Yes. Most AngularJS systems do not require full rewrites. Modernization can focus on refactoring, restructuring, and selectively replacing parts of the application while preserving existing logic where possible.
Legacyleap is designed to support phased execution, including parallel AngularJS and modern framework operation during transition.

Timelines vary based on app complexity, but Gen AI significantly compresses the process. While traditional migrations can take 6–12 months, Legacyleap’s Gen AI-powered modernization can cut that by up to 50%, especially when handling UI logic mapping, component generation, and parity validation at scale.

Legacyleap is designed with enterprise constraints in mind, including scale, integration complexity, and production validation. The platform has been used in enterprise environments to modernize production-critical applications, and is designed to handle enterprise-scale codebases and long-running modernization programs.

Want an Application Modernization Cost Estimate?

Get a detailed and personalized cost estimate based on your unique application portfolio and business goals.