Hopper

First agentic development environment for mainframe/COBOL

95 followers

First agentic development environment for mainframe/COBOL

95 followers

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Hopper is the first agentic development environment for the mainframe. It's Cursor for mainframes. It combines a real TN3270 terminal, mainframe-aware panels for datasets, jobs, members, and spool output, and an AI agent that can operate across z/OS workflows. The agent can inspect datasets, read and edit PDS members, write JCL, submit jobs, parse JES output, explain failures, and help developers debug mainframe workflows faster. Hopper is available on Windows, Linux, and macOS.

Hopper Alternatives

Building beyond Hopper’s agentic COBOL focus? Try Warp for a snappy, open-source ADE; Ghostty for a fast, cross‑platform terminal; GCLI for GPT-powered commands; HiveTerm to orchestrate multiple AI agents; and Clide when you want a grid-layout terminal with an assistant that drives your shells.