
Open Startups
Open Startup List
Starter Story
Startup Stash
Indie Hackers
Oye Startups
Startup Tracker
A collection of open startups

DevTools Advanced
FullStackToolkit
DevFinanceTools
JSON Formatter & Validator
AllDevToolsHub
Boop
DeveloperTools.Tech
120 free browser-based developer utilities. No sign-up required.
Which is more popular?
Based on our record, OpenStartup.dev seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | openstartup.tm | devtoolstack.io |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.


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


Share your experience with using OpenStartup.dev and DeveloperToolStack. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


This is called open startup.. you can see a list at https://openstartup.tm. - Source: Hacker News / about 3 years ago
I don't know about _fully open_, but I think Buffer is an example of a company that shares unusually much. https://buffer.com/resources/revenue-dashboard/ There's some sort of list at https://openstartup.tm/ but I think a lot of... - Source: Hacker News / about 4 years ago
- https://openstartup.tm/ pros: if you're an early adopter, it's nice to know how the service you're investing time in is doing financially. One of the biggest risks of choosing a new/unknown service, as a consumer, is that it will... - Source: Hacker News / over 4 years ago
Tracking DeveloperToolStack since Aug 2026.
When comparing OpenStartup.dev and DeveloperToolStack, you can also consider the following products.

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Free, no-signup developer tools for technical SEO: robots.txt, sitemap.xml and .htaccess generators, plus practical guides. Everything runs in your browser.
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Learn how others are building successful e-commerce businesses.
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Free, no-signup calculators for the money side of building software and freelancing
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