# Maintain and modernize: AI tools > From the AI SDLC Landscape (https://aisdlclandscape.org/phases/maintain). CC-BY-4.0. Data as of 2026-10-26. Upgrades, migrations, legacy modernization and tech debt. 7 tools list this as the main phase, and 16 more tools cover it. ## Main phase - [AWS Transform](https://aisdlclandscape.org/tools/aws-transform.md) (Amazon Web Services): "The first agentic AI service to accelerate transformation of Windows, mainframe, VMware and custom code, up to 5x faster (company claim)." - [Codemod](https://aisdlclandscape.org/tools/codemod.md) (Codemod): "Code intelligence and automation platform that gives agents compiler-aware context for framework upgrades, migrations and org-wide fixes." - [Hypercubic](https://aisdlclandscape.org/tools/hypercubic.md) (Hypercubic): "Agentic AI for mainframe and COBOL modernization: turns COBOL into living documentation, captures tribal knowledge and transforms code." - [IBM Bob (formerly watsonx Code Assistant)](https://aisdlclandscape.org/tools/ibm-wca.md) (IBM): "IBM Bob, an AI coding agent that accelerates delivery and application modernization across complex enterprise codebases." - [Mechanical Orchard (Imogen)](https://aisdlclandscape.org/tools/mechanical-orchard.md) (Mechanical Orchard): "Imogen rewrites legacy mainframe systems into modern, cloud-ready code and verifies that outputs match, without breaking what runs today." - [Moderne](https://aisdlclandscape.org/tools/moderne.md) (Moderne): "A deterministic layer between your agents and your code: agents drive OpenRewrite recipes to make provably correct changes across whole business units." - [vFunction](https://aisdlclandscape.org/tools/vfunction.md) (vFunction): "AI-driven modernization for large Java and .NET applications: gives AI coding tools the architectural context to refactor and rewrite." ## Also covers this phase - [Amazon Q Developer](https://aisdlclandscape.org/tools/amazon-q-developer.md) (Amazon Web Services): "AI coding assistant that writes, debugs and refactors code natively in your IDE and across AWS." - [Charlie (Daemons)](https://aisdlclandscape.org/tools/charlie-labs.md) (Charlie Labs): "Daemons: always-on AI processes, defined in Markdown, that work proactively across Slack, Linear and GitHub with no prompts." - [Cosine](https://aisdlclandscape.org/tools/cosine.md) (Cosine): "The sovereign AI lab: trains models and specialised coding agents for organisations that need frontier capability inside secure environments." - [Devin](https://aisdlclandscape.org/tools/cognition-devin.md) (Cognition): "Devin, the first autonomous software engineer, plans, writes, tests and ships production code inside your existing workflows." - [Diffblue Testing Agent](https://aisdlclandscape.org/tools/diffblue.md) (Diffblue): "AI testing agent that generates, verifies and fixes unit tests autonomously across enterprise Java codebases, legacy versions included." - [Ellipsis](https://aisdlclandscape.org/tools/ellipsis.md) (Ellipsis): "Managed Claude Code agents in the cloud: define agents as config files in your repo and Ellipsis runs them to build features, fix bugs and investigate." - [Factory (Droids)](https://aisdlclandscape.org/tools/factory.md) (Factory): "Factory Droids automate coding, testing and deployment for startups and enterprises; also ships code review and a living AutoWiki per repository." - [G5](https://aisdlclandscape.org/tools/g5-labs.md) (G5 Labs): "The semantic abstraction layer for AI-native development: natural-language intent becomes the source code." - [Mistral Vibe](https://aisdlclandscape.org/tools/mistral-code.md) (Mistral AI): "Agentic coding that understands your entire codebase: build, test and modernize autonomously from terminal or IDE." - [Ona (formerly Gitpod)](https://aisdlclandscape.org/tools/ona.md) (Ona): "Run a team of AI software engineers in the cloud, orchestrated, governed and secured at the kernel, inside your VPC." - [OpenHands](https://aisdlclandscape.org/tools/openhands.md) (All Hands AI): "Open-source AI coding agent platform: start locally, automate engineering workflows, use any model and scale in the cloud or your VPC." - [Pixee](https://aisdlclandscape.org/tools/pixee.md) (Pixee): "Automates vulnerability triage and remediation across your scanners: clears up to 95% of false positives and fixes the rest as merge-ready PRs." - [Sentry (Seer)](https://aisdlclandscape.org/tools/sentry-seer.md) (Sentry): "Error monitoring and tracing for developers; the Seer AI debugging agent uses logs, commits, traces and stack traces to fix issues." - [Sourcegraph](https://aisdlclandscape.org/tools/sourcegraph.md) (Sourcegraph): "Code understanding, oversight and evolution: gives humans and agents complete context across the largest, most complex codebases." - [Swimm](https://aisdlclandscape.org/tools/swimm.md) (Swimm): "Agentic modernization, delivered: static analysis and AI map legacy applications so modernization is accurate, complete and on time." - [Tembo](https://aisdlclandscape.org/tools/tembo.md) (Tembo): "Run any coding agent in the cloud: give every change its own computer, follow agent work, review results and see what merges." Claims are each vendor's own words. Every fact on a tool's page links to its source.