15 Micro SaaS Ideas You Can Build Solo (2026)

Small, focused SaaS products that one developer can build and run. These ideas target specific niches with clear demand.

1. Waitlist & Launch Page Builder

Low$3K-$20K/mo

Help startups collect emails and build hype before launch. Simple tool with viral referral mechanics.

Real example: Marc Lou built ShipFast which helps developers launch SaaS products quickly. Similar concept.

2. Social Proof Widget

Low$3K-$15K/mo

Show recent purchases, signups, or reviews as floating notifications on websites. Simple but effective.

Real example: FOMO and similar tools charge $20-$100/mo. Easy to build, high stickiness.

3. Link-in-Bio Tool

Low$2K-$20K/mo

Build a link-in-bio page builder with analytics and customization. Target influencers and creators.

Real example: Linktree dominates but many niches want specialized versions with different features.

4. Screenshot API

Medium$3K-$25K/mo

Build an API that takes screenshots of websites. Used by developers for OG images, thumbnails, and monitoring.

Real example: Screenshot APIs charge per screenshot. High-volume users pay $50-$200/mo.

5. Uptime Monitoring

Medium$3K-$20K/mo

Monitor website uptime and alert when sites go down. Simple concept, strong recurring revenue.

Real example: Uptime monitoring services with niche focus (e.g., Shopify stores) can differentiate.

6. Notion-to-Website Builder

Medium$5K-$30K/mo

Turn Notion pages into websites automatically. Content creators love Notion but need public sites.

Real example: Super.so and Potion.so prove this model works. Room for more specialized versions.

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