
Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing

Finviz Insider Trading
Sec Form 4
InsiderMonkey Screener
MarketChameleon Insider Trades Screener
Insider Tracking
FinViz
Gurufocus Insider
OpenInsider is an SEC Form 4 insider screener that allows you to monitor the insider trading filings for insider buying and selling.
Which is more popular?
Based on our record, OpenInsider seems to be more popular. It has been mentioned 55 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | devfinancetools.com | openinsider.com |
| Pricing | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
No description of OpenInsider yet.
What each product offers, as listed by its team.


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


No analysis of DevFinanceTools yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
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I USED OPENINSIDER TO SEE WHAT RICH PEOPLE BUY !
How often each product is chosen within a category, 0–100% relative to the other.


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


Tracking DevFinanceTools since Aug 2026.
That said, you can verify my math with the share ownership from the most recent 10K-A, Jason Hope's last Form 13, the open short interest listed on Nasdaq.com, and the daily volume from ChartExchange. If you don't know about volume &... Source: about 3 years ago
Not for finding the next NVDA, but this is a cool website http://openinsider.com/. Source: over 3 years ago
I've been buying a little bit of any regional bank that's down if they show up on openinsider.com with a recent cluster of insider buying. I figure their CFO knows best. Source: over 3 years ago
When comparing DevFinanceTools and OpenInsider, you can also consider the following products.

Helping you make rational decisions, one calculation at a time.
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Finviz Insider Trading platform allows you to perform trades, investments, and transactions in the company’s stock shares.
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Online calculator for quick calculations, along with a large collection of calculators on math, finance, fitness, and more, each with related in-depth information.
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Sec Form 4 is a real-time insider data providing platform that shows insider trades, transactions, buying, and selling data.
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Should you build an internal tool? Or just buy it?
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InsiderMonkey Screener provides a real-time resource for insider trading and hedge funds.
Compare InsiderMonkey Screener to DevFinanceTools or OpenInsider: