
DevTools Advanced
FullStackToolkit
DevFinanceTools
JSON Formatter & Validator
AllDevToolsHub
Boop
IT Tools
120 free browser-based developer utilities. No sign-up required.

SelfEmployLab
H&R Block
Freelancer Directory
Freelancer Tools
GoSystem Tax RS
Quarterly Tax Calculator for Freelancers
Taxdcalc UK
Free calculators for freelancers: hourly rate, contract rate, tax set-aside, day rate, gig driver earnings, and more. Fast, private, no sign-up.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | devtoolstack.io | solomoneytools.com |
| Pricing | ||
| Company | — | Startup from the United States · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of DeveloperToolStack yet.
Solo Money Tools is a free suite of 23 finance calculators built specifically for freelancers and self-employed people — no signup, no tracking, everything runs in your browser. What it does: Freelance hourly rate calculator — enter your target take-home, expenses, and billable hours; get the...
What each product offers, as listed by its team.


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


As answered by people managing DeveloperToolStack and Solo Money Tools.
Solo Money Tools's answer:
It started with the question every freelancer asks and nobody answers concretely: "what should I actually charge?" Generic calculators gave vague numbers with no tax logic and no sources. So we built the calculator we wanted to use — then kept going: take-home pay, quarterly taxes, safe harbor, contract-vs-salary comparisons — until it became a complete toolkit, each tool verified against current IRS and GOV.UK figures.
Solo Money Tools's answer:
Solo Money Tools is free and account-free, so it has no "customers" in the traditional sense — its users are freelancers worldwide, plus bloggers and site owners who embed its calculators on their own resource pages via the free embed kit.
Solo Money Tools's answer:
It's a full finance toolkit built specifically for freelancers — free 23+ calculators covering rates, taxes, and take-home pay — with verified 2026 tax figures (IRS and GOV.UK) and zero signup, tracking, or paywall. Everything runs in the browser, and every calculation shows its math with cited sources.
Solo Money Tools's answer:
Plain, fast, privacy-preserving web technology: HTML, CSS, and vanilla JavaScript running entirely client-side — no frameworks, no trackers, no data collection. Each calculator is also packaged as an embeddable widget (two lines of code) for other site owners.
Solo Money Tools's answer:
Most freelance calculators are single tools bolted onto generic finance sites, with outdated tax figures and no explanation of the math. Solo Money Tools is freelancer-first: the tax logic includes safe-harbor rules, the rate calculator accounts for unpaid time and billable-hour reality, and figures are checked against official sources and dated. It's also completely free — no signup wall before you see your number.
Solo Money Tools's answer:
Freelancers, independent contractors, and self-employed people — designers, developers, writers, gig drivers, and consultants — who need fast, reliable answers to money questions: what to charge, what to set aside for taxes, and what an hourly rate really means per year.
Share your experience with using DeveloperToolStack and Solo Money Tools. For example, how are they different and which one is better?
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