
DevToys
CyberChef
SafeUtils
DevToys for Mac
CodeSwissKnife
Boop
DevBox
One app for your daily dev tasks

10015.io
FreeToolkit
FreeToolPoint
PotatoTools
ToolMasterApp.in
ToolsOnline.run
Cryptii
200+ free browser tools, most under 40 KB. Lightweight, private and easy to use, with no signup, no intrusive ads and no server-side processing.

Which is more popular?
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | devknife.app | appergo.com |
| Pricing | ||
| Platforms | ||
| Company | 2025 | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


DevKnife is a macOS app that puts everyday developer tools in one place. It includes a JSON editor and formatter, text compare, JWT decoder, IP location lookup, port scanner, and many more. Instead of switching between websites, CLI tools, and separate apps, you can open DevKnife and handle these...
AppErgo is an independent collection of 200+ free browser-based tools covering text, codes and puzzles, conversions, dates and time, audio, games, random generators, web development and everyday utilities. Available in 10 languages, the website is designed for quick use on desktop and mobile,...
What each product offers, as listed by its team.


No features have been listed yet.
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DevKnife and AppErgo.
DevKnife's answer
DevKnife is a lightweight, native macOS app that bundles everyday developer utilities into one place. Instead of switching between separate websites, CLI tools, or multiple apps, you can handle tasks like JSON formatting, WHOIS lookups, port scanning, JWT decoding, hashing, and more from a single, fast, offline-friendly tool.
Its uniqueness comes from combining these small but essential tools into a consistent, Mac-native experience.
AppErgo's answer:
AppErgo brings together more than 200 browser tools in one fast, lightweight and privacy-friendly toolbox. Every tool is 100% free, works without an account, runs directly in the browser, avoids intrusive advertising, and is fully responsive on both desktop and mobile.
AppErgo's answer:
AppErgo was created in France in 2026 as an independent project developed by a solo creator. Its name combines “App”, for applications and online tools, with “Ergo”, reflecting a focus on ergonomics, simplicity and ease of use. The project started with a small collection of practical tools and gradually grew into a toolbox of more than 200 tools covering text, codes and puzzles, dates, audio, games and everyday tasks.
AppErgo's answer:
AppErgo is primarily built with static HTML, CSS and vanilla JavaScript. Its pages are generated through a custom administration system based on PHP and MySQL, while the public tools rely on standard browser technologies such as SVG, Canvas and the Web Audio API. All processing takes place directly in the browser, without external APIs or remote processing services.
AppErgo's answer:
AppErgo is designed for students, teachers, developers, creators, office workers, puzzle enthusiasts and everyday users who need a practical online tool without creating an account or navigating a complicated service. Its wide range of tools supports both occasional tasks and regular use on desktop or mobile.
AppErgo's answer:
AppErgo is built for people who want to open a tool, complete a task and move on. It combines more than 200 fast, lightweight and responsive tools with clear interfaces and local browser processing. There is no signup, no intrusive advertising and no unnecessary upload of personal data. The tools are available directly on desktop and mobile, without installing anything.
AppErgo's answer:
AppErgo is primarily designed for individual users rather than named enterprise customers. Its audience includes students, teachers, developers, creators, puzzle enthusiasts and anyone looking for a quick browser-based tool.
Share your experience with using DevKnife and AppErgo. For example, how are they different and which one is better?
When comparing DevKnife and AppErgo, you can also consider the following products.

A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
Compare DevToys to DevKnife or AppErgo:

10015.io is an all-in-one toolbox offering many tools from various categories.
Compare 10015.io to DevKnife or AppErgo:


100+ free online tools: JSON formatter, Base64 encoder, UUID generator, regex tester, age calculator, color picker, unit converter & more. Fast, private — runs entirely in your browser. No login.
Compare FreeToolkit to DevKnife or AppErgo:

SafeUtils: Native MacOS, Linux and Windows desktop application with 110+ carefully crafted tools for yours and your teams everyday work with sensitive data in various formats.
Compare SafeUtils to DevKnife or AppErgo:

45+ free browser-based tools: PDF tools, resume builder, OCR, YouTube thumbnails, favicon generator, calculators & more. No signup, no uploads.
Compare FreeToolPoint to DevKnife or AppErgo: