I Built 23 Free Developer Tools in 2 Weeks — Here's What Actually Worked

Two weeks ago, I had zero developer tools. Today I have 23. Here's the honest story of what happened, what worked, and what completely flopped. Why 23 Tools? (The "Spray and Pray" Strategy) I'll be real — I didn't plan to build 23 tools. I planned to build one, maybe two. But after launching my first tool (a JSON formatter) and seeing it get indexed by Google within 48 hours, something clicked. What if I just... kept going? What if instead of spending 3 months perfecting one tool, I spent 2 weeks shipping as many as possible and let the data tell me what worked? So that's exactly what I did. Every morning, I'd pick a tool idea. By evening, it was live. Some took 2 hours, some took 8. But the constraint was always the same: ship it today or kill it. This approach taught me more about what developers actually need than any amount of market research ever could. The Tech Stack: Deliberately Boring Here's what I used for all 23 tools: Vanilla JavaScript — no React, no Vue, no frameworks Pla