Move legacy C/C++ systems to Rust with confidence.
RustLift helps engineering teams modernize critical software through verified, memory-safe migration workflows that preserve behavior, reduce risk, and accelerate adoption of Rust.
Current MVP: CLI contracts, local analysis, migration planning, context bundles, verification hooks, and Markdown/JSON reports.
Verified Migration
Every migration produces reviewable evidence: plans, context bundles, baselines, unsafe tracking, and reports.
Memory-Safe Modernization
Move bounded C/C++ modules toward Rust without pretending hard systems code is automatic.
Critical-System Ready
Built for teams where correctness, reliability, security, and auditability matter.
Behavior Preservation
Capture existing behavior before translation, then verify Rust output against explicit gates.
Workflow
Analyze broadly. Select narrowly. Verify aggressively.
RustLift is designed for large legacy systems where the right answer is rarely to translate everything at once.
Analyze the repo locally
Inventory C sources, headers, tests, build files, compile commands, LOC, and migration risk without uploading the codebase.
Choose the next safe target
Rank migration candidates by build context, test coverage, pointer density, macros, global state, platform conditionals, and hard C patterns.
Pack bounded context
Create an inspectable migration bundle for one file or function: target code, direct headers, tests, compile flags, constraints, and provider metadata.
Verify before trusting
Capture baselines, run compile and test gates, track unsafe Rust, and generate Markdown plus JSON reports for engineering review.
Current product artifact
A report engineers can review, not a black-box code dump.
The public demo already produces deterministic local artifacts in `.rustlift/`: analysis JSON, a migration plan, a migration record, and a Markdown report.
Project summary
1 source, 1 header, 13 LOC
Compile database
found, 1 parsed entry
Planner result
src/checksum.c ranked low risk
Context bundle
target, header, tests, flags, constraints
Evidence
baseline passed, unsafe tracked, report generated
.rustlift/report.md
## Top migration candidates
- 1. src/checksum.c (low, score 8)
- Low risk and likely self-contained.
- Has matched build context.
## Migration bundle completeness
- Complete context bundles: 1
- Incomplete context bundles: 0
## Unsafe review
- Unsafe blocks found: 0
- Human unsafe review required: 0
Verification gates
Generated Rust is an untrusted draft until the gates pass.
RustLift defines success as evidence: original behavior captured, Rust compiled, tests passed, differential checks run where feasible, unsafe counted and justified, and the outcome reported.
gate 01
analyzed
gate 02
planned
gate 03
test_captured
gate 04
context_packed
gate 05
draft_generated
gate 06
compiled
gate 07
tested
gate 08
differential_verified
gate 09
unsafe_reviewed
gate 10
reported
C behavior first
Existing tests, characterization tests, golden fixtures, fuzz cases, and sanitizer evidence become migration inputs.
Risk is explicit
Pointers, macros, callbacks, global state, volatile access, packed structs, and platform conditionals are surfaced instead of hidden.
Hard cases can wait
Planner outputs can recommend migrate now, add tests first, wrap behind FFI, defer, or require human review.
Enterprise deployment
Keep your approved AI infrastructure. Add the migration control plane.
RustLift is designed for teams with sensitive, proprietary, export-controlled, or mission-critical code. The LLM is replaceable. The verified workflow is the product.
Local developer CLI
Run RustLift against a local repo and inspect generated `.rustlift/` artifacts before any model call exists.
Team and CI integration
Use the same commands in GitHub Enterprise, GitLab, Azure DevOps, or internal build systems.
On-prem workbench
Keep repository indexing, test execution, report storage, policies, and audit logs inside the customer environment.
Approved AI gateway
Route bounded context only to customer-approved model endpoints such as Codex, Claude Code, Azure OpenAI, AWS Bedrock, local models, or internal gateways.
Target teams
Built for codebases where correctness, evidence, and boundaries matter.
Now
CLI skeleton, analyzer, planner, migration records, reports
Next
Test harness, provider adapters, context packing boundaries
Then
Translation prototype, compile repair loops, unsafe explanations
Later
MCP tools, Codex/Claude workflows, enterprise hardening
Pilot and enterprise pricing
Pricing depends on the codebase, deployment boundary, and migration goals.
RustLift is early-stage migration infrastructure. Reach out with your target environment and we can scope the right pilot or enterprise evaluation.
Migration pilot
Start with one representative C module and prove the workflow end to end: analysis, planning, context bundle, draft path, verification evidence, and report.
Team evaluation
Assess how RustLift fits your build system, test maturity, CI environment, approved AI tooling, and migration review process.
Enterprise deployment
Plan local or on-prem operation, model gateway boundaries, audit logging, policy controls, report storage, and procurement requirements.
Services support
Get hands-on help selecting targets, adding tests, interpreting migration risk, and preparing evidence for engineering review.
FAQ
Clear claims for a hard engineering problem.
RustLift should be sold as verified migration infrastructure, not magic translation.
Is RustLift a one-shot transpiler?
No. RustLift is intentionally built as a migration workbench. It analyzes broadly, selects narrowly, migrates bounded targets, verifies aggressively, and records evidence for human review.
What does the current MVP do?
The current repo establishes the CLI workflow: init, analyze, plan, migrate, verify, and report. It produces analysis JSON, migration plans, context bundles, migration records, and Markdown reports. Real translation is planned after the contracts and verification flow are stable.
Does source code have to leave our environment?
No. The enterprise model is local or on-prem first. RustLift should pack only bounded context and send it only to customer-approved model infrastructure when model adapters are enabled.
Which languages are supported first?
The first MVP focuses on C-only migration for Linux and macOS projects using CMake or Make. C++ support is a later hardening path, not an initial promise.
Why not just use an AI coding assistant directly?
AI output is only useful when the surrounding workflow can prove what changed and what passed. RustLift is the control plane around approved assistants, test capture, context minimization, unsafe tracking, and audit-ready reports.
Start with one representative C module.
Use an early pilot to prove the workflow: analysis, target selection, context bundle, draft generation path, verification evidence, and a reviewable report.