Option A
The Tool Empire
Developer Tools
Your Empire of Free Online Tools
Powerful tools for developers, designers, writers & students. No login. No server. Runs entirely in your browser.
- Listing
- Free (nofollow)
- Listed
- Jun 2026
Compare
The Tool Empire vs Mailpit
Side-by-side comparison of two indie startups from the Startup Spotlight directory.
Option B
Mailpit
Developer Tools
Email and SMTP testing tool for developers.
Mailpit is an OSS local SMTP server with a web UI for catching dev/staging emails. Built by a solo developer.
- Founded
- 2022
- Team
- 1-10
- Listing
- Free (nofollow)
- Listed
- May 2026