Nuphy Air75 V2

The Nuphy Air75 V2 is the best keyboard under $100 on this list and the recommendation for developers who want a meaningful upgrade from a membrane board without committing to the full enthusiast price point. At $95, it offers hot-swap sockets (try different switches), pre-lubed stabilizers (unusual at this price), Bluetooth 5.0 + 2.4GHz wireless, and a compact 75% layout that keeps the function row and arrow keys. The low-profile switches give it a laptop-like feel that many developers prefer for sustained typing. The build quality isn't in the same league as the Keychron Q3 Pro, but the plastic case vibrates less than expected. Battery life is exceptional: 3,000mAh with ~2 months of wireless use at 8 hours/day.