Cursor

Cursor is an AI-first code editor (a fork of VS Code) built by Anysphere. For a solo founder who can code, it is the most popular way to move faster on your own product: a familiar editor where the model understands your whole codebase and can make coordinated changes across many files.

The two features you will live in are Tab, a predictive autocomplete that suggests multi-line and cross-file edits, and the Agent, which takes a plain-English instruction, edits across files, runs commands, and iterates on its own errors while you review every diff before it lands. That review step is what keeps a one-person team safe shipping fast.

On cost it is friendly for a solo: a free tier to start, then a $20/mo Pro plan that unlocks the strongest models and higher limits. The honest caveat is the same as the rest of this category: you need enough coding ability to read and approve what it produces. This is an accelerant for a technical founder, not a way for a non-coder to conjure software. If you are already comfortable in VS Code, the switch is minutes.