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DevToys VS FormulaEngineer

Compare DevToys VS FormulaEngineer and see what are their differences

DevToys

A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
FormulaEngineer

FormulaEngineer is a high-performance .NET Excel formula engine for reading, writing, and evaluating XLSX formulas without Microsoft Excel, COM interop, or Office automation. It supports 430+ Excel-compatible functions, including XLOOKUP, XMATCH, LET

Rating
0 reviews
Pricing
Paid Free trial $1,000 / Annually (Single developer)
Alternatives Is it good?
Measure.sh
Measure helps mobile teams monitor and fix crashes, ANRs, bugs, and performance issues. The open source alternative to Firebase Crashlytics. sponsored

Which is more popular?

Based on our record, DevToys seems to be more popular. It has been mentioned 16 times since March 2021.

social mentions
16 vs 0
Developer Tools popularity
98% vs 2%
alternatives listed
240+ vs 6

Base details

Website, pricing, platforms and company facts side by side.

DevToys
FormulaEngineer
Website devtoys.app nasvelocityexcel.com
Pricing
Open source
Paid Free trial $1,000 / Annually (Single developer) Official pricing
Listed in
Productivity Open Source Developer Tools Tech +1
C# .Net Programming Development Spreadsheets Excel Tools Excel Developer Tools Software Development Asp.net Asp.net Core +8

About DevToys and FormulaEngineer

In their own words, as submitted to SaaSHub.

DevToys
FormulaEngineer

No description of DevToys yet.

FormulaEngineer is a high-performance .NET Excel formula engine for reading, writing, and evaluating XLSX formulas without Microsoft Excel, COM interop, or Office automation. It supports 430+ Excel-compatible functions across lookup, financial, statistical, math, text, date/time, logical,...

Read more about FormulaEngineer

Features and specs

What each product offers, as listed by its team.

DevToys 4 features
FormulaEngineer 10 features
  • Comprehensive Toolset
    DevToys offers a wide range of developer tools in one package, allowing easy access to utilities like JSON formatting, JWT decoding, and text encoding without switching applications.
  • User-Friendly Interface
    The application features an intuitive and clean interface, making it accessible for both novice and experienced developers to quickly find and use the tools they need.
  • Free and Open Source
    DevToys is free to use and open source, allowing users to benefit from community contributions and transparency, while supporting developers who refine and expand its features.
  • Offline Access
    DevToys can be used offline, which is beneficial for developers who need tool access without reliable internet connectivity.

Possible disadvantages

  • Platform Limitations
    As of now, DevToys is primarily available for Windows users, limiting accessibility for developers on other operating systems, such as macOS or Linux.
  • Limited Advanced Features
    While DevToys offers a broad range of basic tools, it may lack some advanced features that specialized standalone applications provide, which might be necessary for more complex tasks.
  • Dependency on .NET
    DevToys requires the .NET 5 or higher framework which may be a drawback for users who prefer to limit dependencies or need a lightweight solution.
  • Potential Redundancy
    Developers who already use a variety of specialized tools or integrated development environments might find some of DevToys' tools redundant, preferring their existing solutions.
  • Platform
    .NET 6 and later
  • Language
    C# / .NET
  • Excel formula evaluation
    Evaluate XLSX formulas without Microsoft Excel, COM, or Office automation
  • Function coverage
    430+ Excel-compatible functions
  • Dynamic arrays
    Supports modern Excel dynamic-array formulas and spill-aware behavior
  • Lambda helpers
    Supports LET, LAMBDA, MAP, REDUCE, SCAN, BYROW, BYCOL, MAKEARRAY, and ISOMITTED
  • Reader and writer
    Read and write XLSX workbooks with formulas
  • Deployment
    Pure managed code, cross-platform on Windows, Linux, and macOS
  • Package Installation
    Available on NuGet
  • Trial
    Built-in 7-day trial

Analysis

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

DevToys
FormulaEngineer

Overall verdict

  • DevToys is a valuable tool for developers, providing a wide range of utilities in a single, easy-to-use application. It is well-received for its functionality and convenience.

Why this product is good

  • DevToys is considered good because it offers a suite of handy developer tools integrated in one application, eliminating the need to search for different tools online. It includes utilities for text manipulation, data formatting, image conversion, and more, all designed to streamline the workflow of developers.

Recommended for

  • Software developers
  • Web developers
  • Data analysts
  • IT professionals
  • Anyone who frequently manipulates data or code

Overall verdict

  • FormulaEngineer appears to be a niche Excel/spreadsheet formula-generation tool aimed at helping users quickly build complex formulas without deep manual expertise, but independent reviews and widespread user feedback are limited, so it should be evaluated on a trial basis against your specific spreadsheet needs.

Why this product is good

  • Focuses specifically on generating and troubleshooting Excel formulas, which can save time compared to manual formula writing
  • May use AI or templated logic to translate plain-language requests into working formulas
  • Could be useful for users who are not advanced in Excel functions like VLOOKUP, INDEX/MATCH, or array formulas
  • Potentially lightweight and easy to use compared to learning full Excel scripting or VBA

Recommended for

  • Excel users who need quick help writing or debugging formulas
  • Small business owners or analysts without advanced spreadsheet training
  • People who frequently build reports and need repeatable formula solutions
  • Users looking for a simple tool rather than a full BI or automation platform

Videos

Walkthroughs and reviews on video.

DevToys 3 videos + Add
FormulaEngineer 0 videos + Add

DevToys - Review and How to Install | The Swiss Army Knife for Developers

More videos

  • - Quick shout-out to DevToys
  • - DevToys: All in One Developer Tools for Windows

No FormulaEngineer videos yet. You could help us improve this page by suggesting one.

Category popularity

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

Score bands 0–20 21–40 41–50 51–60 61–100
DevToys
FormulaEngineer
98% 98%
Developer Tools
2% 2%
100% 100%
Productivity
0% 0%
0% 0%
Software Development
100% 100%
100% 100%
Utilities
0% 0%

Questions & Answers

As answered by people managing DevToys and FormulaEngineer.

What makes your product unique?

FormulaEngineer's answer:

FormulaEngineer focuses on the hard part of spreadsheet processing: recalculating Excel formulas accurately inside .NET without Microsoft Excel, COM interop, or Office automation. Most spreadsheet libraries can read and write XLSX files, but FormulaEngineer is built around Excel-compatible formula evaluation, including lookup formulas, financial/statistical formulas, dynamic arrays, structured references, error propagation, and lambda-helper formulas such as LET, LAMBDA, MAP, REDUCE, SCAN, BYROW, BYCOL, and MAKEARRAY.

Why should a person choose your product over its competitors?

FormulaEngineer's answer:

Choose FormulaEngineer when formula accuracy matters more than simply opening or exporting an Excel file. It is designed for server-side .NET applications that need to recalculate workbook logic instead of trusting cached XLSX values. FormulaEngineer is pure managed .NET, works without Excel installed, avoids COM automation, and is focused on Excel-compatible formula behavior for APIs, reporting systems, background jobs, validation workflows, and financial/statistical workbook calculations.

How would you describe the primary audience of your product?

FormulaEngineer's answer:

FormulaEngineer is built for .NET developers, backend engineers, SaaS teams, financial software builders, reporting-system developers, and teams that process uploaded or generated Excel workbooks on servers. It is especially useful for ASP.NET Core APIs, Blazor applications, MVC applications, background jobs, validation workflows, financial models, and automated XLSX reporting systems where Excel cannot be installed or automated safely.

Who are some of the biggest customers of your product?

FormulaEngineer's answer:

FormulaEngineer does not currently publish a public customer list. It is available to developers and teams through NuGet and direct licensing, and is intended for use in production .NET applications, SaaS products, reporting systems, spreadsheet validation workflows, and server-side Excel processing systems.

What's the story behind your product?

FormulaEngineer's answer:

FormulaEngineer was created to solve a practical gap in .NET Excel processing: reading a cached value from an XLSX file is not the same as recalculating the formula. Cached values can be missing, stale, or wrong after workbook inputs change in code. FormulaEngineer was built as a from-scratch formula engine so .NET applications can read, write, and recalculate Excel workbook logic without depending on Microsoft Excel, COM automation, or old saved formula results.

Which are the primary technologies used for building your product?

FormulaEngineer's answer:

  • C#
  • .NET 6+
  • NuGet packaging
  • ASP.NET Core / Blazor / MVC usage scenarios
  • Cross-platform pure managed .NET

User comments

Share your experience with using DevToys and FormulaEngineer. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

DevToys 16 mentions
FormulaEngineer 0 mentions

View more

Tracking FormulaEngineer since Jul 2026.

Alternatives to DevToys and FormulaEngineer

When comparing DevToys and FormulaEngineer, you can also consider the following products.

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