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Building tools is emphasized over starting startups initially, focusing on creating useful tools that solve a specific pain point.
Great tools are highlighted as being smaller, simpler, and faster to develop compared to full-fledged startups.
By identifying common annoyances, repetitive tasks, and areas for improvement, developers can develop sellable tools efficiently.
Suggestions for simple tools include Markdown Email Previewer, API Rate Limit Tester, JSON-to-TypeScript Types Generator, GitHub Repo Insights, and Color Palette Diff Tool.
Various platforms like Gumroad, Ko-fi, Lemonsqueezy, GitHub, and Dev.to are listed as avenues for selling dev tools.
Real examples of successful dev tools that generate income are provided, showcasing the profitability of simple yet useful tools.
The action plan involves identifying pain points, building tools, launching with proof, monetizing later, and repeating the process to create income streams.
The article emphasizes the concept that a tool is more feasible than a startup initially, as tools ask for focus and reward shipping.
Readers are encouraged to share the simplest tool they wish someone else built or a tool they created that others found useful.