MissingTools
Share the app you wish existed. Let builders find it.
MissingTools launched on April 13, 2026.
What it does
Most builder communities focus on hype. MissingTools focuses on real needs. Share ideas for apps that should exist — no account needed. Community votes on what resonates. Builders discover validated ideas worth building. Instead of vague buzzwords, you get specific needs: "No simple tool for tracking client payments and sending reminders" or "Class notes end up scattered across too many apps and formats." Submit. Vote. Discuss. Build.
Community platform for sharing and discovering ideas for tools and apps that should exist. Vote on ideas you want to see built.
Share it. Vote on it. Let developers discover what to build next. When building APIs, I constantly need to compare how response structures change between versions. For example, v1 returns user data one way, v2 restructures it, and v3 adds new fields. The problem: There's no visual diff tool specifically for API responses. I'm manually copying JSON responses into text diff tools, but they're optimized for code, not nested data structures. Changes to deeply nested objects are nearly impossible to spot. What I'm trying to accomplish: Catch breaking changes before they hit production. Last week I shipped an API update that renamed "user_id" to "userId" in a nested object 4 levels deep. It broke…from missingtools.app
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