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120 free browser-based developer utilities. No sign-up required.

CheckPlug
Get plug types, voltage, and adapters for any country in seconds
Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | devtoolstack.io | plughopper.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Argentina · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of DeveloperToolStack yet.
PlugHopper helps travelers quickly find the right power plug, voltage, and adapter for any destination. Search 195+ countries and see clear visuals of 15 plug types, voltage standards, and safety tips so you pack the correct gear. PlugHopper also offers country travel guides with visa info, water...
What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DeveloperToolStack and PlugHopper.
PlugHopper's answer:
PlugHopper covers 190+ countries with detailed plug type compatibility, voltage/frequency specs, and travel adapter recommendations, all on one page per country. Unlike generic travel sites that bury plug info in long articles, we give you the answer in seconds with visual plug diagrams and direct "will my device work?" compatibility checks.
Plughopper also offers a free AI tool for tailor made travel packing lists and very useful information for your specific trip.
PlugHopper's answer:
Most plug/adapter info online is scattered across outdated wikis or buried in SEO-heavy travel blogs. PlugHopper is purpose-built: country-to-country travel route pages show exactly what adapter you need, comparison pages let you see differences at a glance, and every recommendation links to a verified product. No fluff, no scrolling through 2000 words to find a plug type.
PlugHopper's answer:
International travelers, digital nomads, expats, and business travelers who need to quickly figure out what power adapters and voltage converters they need before a trip. And since PlugHopper also shows important country data like emergency numbers, water safety etc is a must-check source before traveling.
PlugHopper's answer:
Built out of frustration, every time I traveled internationally I'd google "do I need an adapter for [country]" and get dozens of generic articles that never clearly answered the question. So I built the tool I wished existed: fast, visual, covers every country, and actually tells you what to buy.
PlugHopper's answer:
Next.js, React, Tailwind CSS, deployed on Vercel.
PlugHopper's answer:
PlugHopper is a free informational tool, we don't have traditional "customers." Our users are everyday travelers visiting from organic search before international trips.
Share your experience with using DeveloperToolStack and PlugHopper. For example, how are they different and which one is better?
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