Software Alternatives, Accelerators & Startups

Copper VS DevToolKit.site

Compare Copper VS DevToolKit.site and see what are their differences

Copper logo Copper

Copper (formerly ProsperWorks) is easy-to-use customer relationship management for small businesses. Capture contacts and sales leads direct from Gmail with our simple CRM.

DevToolKit.site logo DevToolKit.site

19 free browser-based developer tools โ€” no signup, no tracking, everything runs client-side.
  • Copper Landing page
    Landing page //
    2023-05-09
  • DevToolKit.site Landing page
    Landing page //
    2026-02-14

DevToolKit is a collection of 19 free online developer tools that run entirely in the browser. No backend, no signup, no data ever leaves your machine. Built with Next.js 14 and Tailwind CSS. Tools include: JSON Formatter & Validator, JSON Tree Viewer with node path copying, YAML-JSON Converter, SQL Formatter, Base64 Encoder/Decoder (text + file drag & drop), URL Encoder, JWT Decoder, Hash Generator (SHA-1/256/384/512 via Web Crypto API), Password Generator, Cron Expression Parser with next run time calculation, PostgreSQL Config Generator (free PGTune alternative), UUID v4 Generator, QR Code Generator (PNG + SVG), Lorem Ipsum Generator, Regex Tester, Text Diff Checker, Unix Timestamp Converter, Color Converter (HEX/RGB/HSL), and HTTP Status Codes Reference. Every tool processes data locally using native browser APIs. No server-side processing, no cookies, no analytics tracking of input data.

Copper

Website
copper.com
$ Details
-
Release Date
-
Startup details
Country
United States

DevToolKit.site

Pricing URL
-
$ Details
free
Release Date
2026 February

Copper features and specs

  • Integration with Google Workspace
    Copper integrates seamlessly with Google Workspace, allowing users to manage CRM tasks directly within Gmail, Google Drive, Calendar, and other Google services. This native integration enhances productivity and reduces the need for switching between different applications.
  • User-friendly Interface
    The platform is designed with ease-of-use in mind, featuring an intuitive and straightforward user interface. This makes it accessible for users with varying levels of technical expertise.
  • Customization Options
    Copper provides a range of customization options, allowing users to tailor the CRM to their specific business processes and workflows. This flexibility can help businesses align the tool more closely with their unique needs.
  • Automated Workflow
    The CRM offers robust automation features, such as task automation, follow-up reminders, and automated data entry, which help save time and ensure that important activities are not missed.
  • Strong Customer Support
    Copper is known for its responsive customer support team, offering multiple channels for assistance including live chat, email, and phone support. This ensures users can quickly resolve any issues they encounter.

Possible disadvantages of Copper

  • Limited Advanced Features
    While Copper is powerful for basic CRM tasks, it lacks some of the advanced features found in more complex CRM systems, such as extensive analytics, advanced custom reporting, and intricate sales automation capabilities.
  • Cost
    Copper's pricing can be relatively high compared to other CRMs, especially for small businesses or startups with tight budgets. The costs can add up quickly, particularly when additional features or higher-tier plans are required.
  • Mobile App Limitations
    The mobile app, although functional, does not offer the same level of features and usability as the web version. Some users might find the mobile experience limiting for on-the-go CRM management.
  • Dependency on Google Workspace
    Since Copper is heavily integrated with Google Workspace, businesses not using Google services may find the CRM less attractive or useful. Additionally, any issues with Google services could impact CRM functionality.
  • Limited Third-Party Integrations
    Copper offers fewer third-party integrations compared to some other CRMs. This limitation can affect businesses that rely on a diverse set of tools and require their CRM to integrate with various software solutions.

DevToolKit.site features and specs

  • 100% Client-Side
    no data sent to any server
  • 19 Tools in One Place
    no jumping between sites
  • No Signup Required
    open and use instantly
  • Web Crypto API
    hardware-accelerated hashing and password generation
  • SEO-Optimized Tool Pages
    each tool has its own URL with metadata
  • Mobile Responsive
    works on phone and tablet
  • Dark Theme
    easy on the eyes for long coding sessions
  • PostgreSQL Config Generator
    free PGTune alternative
  • Cron Parser
    shows next 10 actual execution times
  • JSON Tree Viewer
    collapsible tree with click-to-copy node paths

Analysis of Copper

Overall verdict

  • Overall, Copper is considered a good CRM option, especially for small to medium-sized businesses that heavily use Google Workspace. It offers robust features, reliable performance, and good customer support, making it a viable choice for companies looking to streamline their customer relationship management.

Why this product is good

  • Copper (copper.com) is known for its intuitive CRM platform that integrates seamlessly with Google Workspace. It's designed to help businesses manage their relationships and sales processes efficiently. Users often praise its user-friendly interface, automation capabilities, and the ability to access information directly from their inboxes, which saves time and reduces the need to switch between different apps.

Recommended for

    Copper is highly recommended for small to medium-sized businesses, teams that rely on Google Workspace, and organizations looking for an intuitive and easy-to-use CRM solution. It's particularly suited for businesses looking to improve their sales processes and collaboration efficiency without the complexity of more intensive CRM systems.

Analysis of DevToolKit.site

Overall verdict

  • DevToolKit.site appears to be a useful collection of free online developer utilities that consolidates common tasks into one convenient, browser-based platform, though as with any third-party tool, users should verify its reliability and privacy practices for sensitive data.

Why this product is good

  • Provides a centralized suite of everyday developer tools (formatters, converters, encoders/decoders, generators) in one place
  • Browser-based access means no installation or setup is required
  • Typically free to use, lowering the barrier for quick tasks
  • Saves time by eliminating the need to search for individual single-purpose tools
  • Convenient for quick one-off conversions, formatting, and testing during development

Recommended for

  • Web and software developers needing quick access to formatting and conversion utilities
  • Students and beginners learning to code who want free, easy-to-use tools
  • Professionals handling occasional data encoding, decoding, or JSON/XML formatting tasks
  • Teams looking for lightweight browser-based utilities without installing software
  • Anyone needing fast, one-off developer tasks without dedicated applications

Copper videos

How it Works - Copper (formerly ProsperWorks) Crm for Google

More videos:

  • Demo - Extended Copper (Formerly ProsperWorks) Web Demo
  • Review - prosperworks crm user review contact not in project is it a bug or feature?
  • Review - Equipment Review: The Best Copper Skillets
  • Review - Are Copper Peptides Worth the Hype? | Doctorly Reviews
  • Review - Mountain Review: Copper, Colorado

DevToolKit.site videos

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

Add video

Category Popularity

0-100% (relative to Copper and DevToolKit.site)
CRM
100 100%
0% 0
Developer Tools
0 0%
100% 100
Sales
100 100%
0% 0
Text Tools
0 0%
100% 100

Questions & Answers

As answered by people managing Copper and DevToolKit.site.

Why should a person choose your product over its competitors?

DevToolKit.site's answer:

DevToolKit runs 100% in the browser with zero signup. Unlike CyberChef, which has a steep learning curve with its recipe-based interface, DevToolKit gives you 19 standalone tools โ€” each with a clean, focused UI for a single task. Unlike DevToys, it works on any device with a browser โ€” no desktop app installation needed. And unlike SmallDevTools or similar online toolkits, DevToolKit includes unique tools like a PostgreSQL Config Generator (a free PGTune alternative), a Cron Expression Parser that calculates next 10 actual run times, and a JSON Tree Viewer with click-to-copy node paths. Every tool uses native browser APIs like Web Crypto for hashing โ€” no data is ever sent to a server, which matters if you're working with production JWTs, API keys, or database configs.

How would you describe the primary audience of your product?

DevToolKit.site's answer:

Backend and full-stack developers who deal with JSON, JWTs, SQL, cron jobs, and PostgreSQL configuration on a daily basis. DevOps engineers who need quick encoding, hashing, or regex testing without installing CLI tools. Developers who care about data privacy and don't want to paste production tokens or API responses into random websites that may log input data.

What's the story behind your product?

DevToolKit.site's answer:

I'm a backend developer with 10+ years of experience in Python and Go, working on distributed systems and microservices. Every day I was jumping between 5-6 different sites to format JSON, decode a JWT, test a regex, or convert a timestamp โ€” each one bloated with ads, cookie banners, and signup walls. One evening I decided to build all the tools I actually use into a single place where everything runs client-side. The first version had 15 tools and took a weekend to build with Next.js and Tailwind CSS. After getting feedback, I added a PostgreSQL Config Generator (because PGTune hasn't been updated in years), a JSON Tree Viewer, and an HTTP Status Code Reference. It's now at 19 tools and growing based on what developers ask for.

Which are the primary technologies used for building your product?

DevToolKit.site's answer:

Next.js 14 with App Router for server-side rendering and per-page SEO metadata. Tailwind CSS for styling with a custom dark theme. Web Crypto API (crypto.subtle) for SHA-1/256/384/512 hashing and cryptographically secure password generation โ€” zero external crypto libraries. FileReader API for client-side Base64 file encoding. All tools are React components with no backend โ€” the entire app is static and deployed on Vercel. Each tool is a separate route with its own metadata, canonical URL, and sitemap entry for independent Google indexing.

Who are some of the biggest customers of your product?

DevToolKit.site's answer:

DevToolKit is a free tool with no accounts, so we don't track individual users. It's used by individual developers and small teams who need quick, private access to common dev utilities without enterprise overhead. The tool is designed for anyone who works with APIs, databases, or web development and wants a fast, ad-free, privacy-respecting alternative to existing online tools.

What makes your product unique?

DevToolKit.site's answer:

Three things set DevToolKit apart. First, it includes tools you won't find in other online toolkits โ€” a PostgreSQL Config Generator that replaces PGTune with hardware-aware tuning calculations, a Cron Expression Parser that doesn't just describe the schedule but calculates the next 10 actual execution timestamps, and a JSON Tree Viewer where you click any node to copy its full JavaScript path like data.users[0].email. Second, every tool uses native browser APIs instead of external libraries โ€” hashing runs through Web Crypto API with hardware acceleration, passwords use crypto.getRandomValues(), file encoding uses FileReader โ€” meaning zero dependencies and zero data transmission. Third, each of the 19 tools lives on its own URL with dedicated SEO metadata, so you can bookmark devtoolkit.site/jwt-decoder/ and go straight to it โ€” no navigating through menus or loading tools you don't need.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Copper and DevToolKit.site

Copper Reviews

Top 9 Best Copper CRM Alternatives for Businesses in 2023
Are you looking for a CRM system that is similar to Copper CRM but offers more features? There are a number of great CRM systems available that have a lot of the same features as Copper CRM. In this blog post, weโ€™ll take a look at some of the best Copper CRM alternatives. Keep reading to learn more!
Source: magenest.com
Top 21 Salesforceโ€™s Competitors and Alternatives
In Feb 2021, Copper CRM acquired Sherlock. This engagement analytics platform visualizes the entire customer journey and provides information about their intent, engagement, and product usage. With Sherlock, Copper CRM can entice sales teams from Salesforce. [25]
14 Best Copper CRM Alternatives to Use in 2022
The 14 best Copper alternative solutions mentioned in this CRM comparison for small businesses offer the same or better functionality than Copper CRM. Unlike Copper, these tools not only integrate with G Suite but a variety of other software, providing you the room to work with the tools you like.
9 Cheap Salesforce Alternatives that Make CRM as Simple as Amazon.com
Great article Michael! One addition which would be perfect for this list would be ProsperWorks (https://www.prosperworks.com/), a simple CRM for Google Apps. ProsperWorks, seamlessly integrates with Gmail and is highly recommended for small businesses as it is very simple and easy to use with almost zero data entry. Would love to hear what you think!

DevToolKit.site Reviews

We have no reviews of DevToolKit.site yet.
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Social recommendations and mentions

Based on our record, Copper seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Copper mentions (1)

  • Is there anyone taking on Salesforce and Hubspot?
    I've seen Copper CRM work quite well for contractors (assuming that your team is using or open to using Google Workspace - if you're not using Google Workspace, I'd probably ask why not? But then recommend you to use Pipedrive if you're not willing to switch to Google Workspace). Source: over 3 years ago

DevToolKit.site mentions (0)

We have not tracked any mentions of DevToolKit.site yet. Tracking of DevToolKit.site recommendations started around Feb 2026.

What are some alternatives?

When comparing Copper and DevToolKit.site, you can also consider the following products

Zoho CRM - Omnichannel CRM for Businesses of all sizes

DuskTools.app - 150+ free browser-based developer tools - no sign-up, no tracking, no backend. JSON formatter, Base64 encoder, regex tester, JWT decoder, UUID generator, HTTP status lookup, MIME types, port reference, cron builder & more. Everything runs locally in

Pipedrive - Sales pipeline software that gets you organized. Helps you focus on the right deals, so easy to use that salespeople just love it. Great for small teams.

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

Freshsales CRM - A full-fledged CRM for high-velocity sales teams.

CodeUtil.dev - Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.