Hopper
Agentic dev environment for mainframes and COBOL
About Hopper
AI coding agent purpose-built for legacy mainframe and COBOL codebases — the kind of work most modern dev tools ignore. Helps banks, insurers, and government IT teams read, refactor, and modernise the COBOL that still underpins production systems, without the institutional knowledge usually required. From Hypercubic. Strong HN traction on launch (40 pts) for what is a genuinely under-served niche.
How Hopper compares
| Directr tier | C | S | S | S |
| Price | Contact for pricing | From $20/mo or usage-based | From $20/mo | Free (pay API tokens only) |
| Free tier | None | None | 150k tokens/day | Free |
| API access | ✗ | ✓ | ✗ | ✓ |
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