Software Alternatives, Accelerators & Startups

Exercism VS 9Proxy

Compare Exercism VS 9Proxy and see what are their differences

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Exercism logo Exercism

Download and solve practice problems in over 30 different languages.

9Proxy logo 9Proxy

Clean. Fast. Premium Residential Proxies, Starting from $0.015/IP and $0.68/GB.
Visit Website
  • Exercism Landing page
    Landing page //
    2023-06-28
  • 9Proxy Home
    Home //
    2026-02-03
  • 9Proxy Pricing
    Pricing //
    2026-02-03

9Proxy provides reliable residential proxies with clean, fast connections, starting from just $0.015/IP and $0.68/GB. We offer exclusive advantages for affiliates, resellers, and partners, helping enhance online activities and build long-term mutual benefits.

Exercism

Pricing URL
-
$ Details
Platforms
-
Release Date
-

9Proxy

Website
9proxy.com
$ Details
paid Free Trial $0.02 / One-off ($0.015/IP & $0.68/GB)
Platforms
Twitter Telegram Facebook Facebook Messenger TikTok LinkedIn YouTube Windows Linux Instagram
Release Date
2023 November

Exercism features and specs

  • Free Access
    Exercism provides free access to a wide range of coding exercises and learning resources, making it accessible to everyone regardless of their financial situation.
  • Mentorship
    Offers personalized mentorship from experienced developers who can provide feedback and guidance on your code submissions.
  • Wide Variety of Languages
    Supports numerous programming languages, which allows users to learn and practice coding in multiple languages.
  • Structured Learning Tracks
    Organizes exercises into structured tracks, guiding learners through progressively challenging problems in a logical order.
  • Community Support
    Has an active community forum where users can discuss problems, share insights, and ask for help.
  • Open Source Contributions
    Encourages contributions to the platform itself, offering an opportunity for users to give back and improve the resources available to others.
  • Focus on Clean Code
    Emphasizes writing clean, well-documented code, which is beneficial for developing best practices.

Possible disadvantages of Exercism

  • Variable Mentorship Quality
    The quality of mentorship can vary, as it depends on the availability and expertise of volunteer mentors.
  • Learning Curve
    There can be a steep learning curve for beginners who may find some exercises too challenging without sufficient initial guidance.
  • Limited Interactivity
    Exercises are primarily text-based without interactive or visual learning aids, which might be less engaging for some users.
  • Dependence on Volunteers
    The platform relies heavily on volunteer mentors, which can lead to delays in getting feedback and may affect the consistency of support.
  • Interface Complexity
    Some users find the interface and workflow somewhat complex and unintuitive, particularly for those new to the platform.
  • No Real-Time Collaboration
    Lacks real-time collaboration features, meaning users cannot code together or get instant feedback.
  • Focus on Individual Learning
    The platform predominantly focuses on individual learning rather than collaborative projects, which can be a downside for those looking to develop team-working skills.

9Proxy features and specs

  • 20M+ clean residential proxies
  • 99.95% uptime
  • HTTP(s)/Socks5
  • Starting from $0.015/IP & $0.68/GB
  • IPv4
  • Pay as you go
  • Supports country, city, ZIP code and ISP targeting
  • High anonymity
  • 24/7 human support

Analysis of Exercism

Overall verdict

  • Yes, Exercism is considered good for learning and improving programming skills.

Why this product is good

  • Exercism offers free access to a wide variety of exercises in over 50 different programming languages, catering to both beginners and experienced programmers.
  • The platform provides a unique mentorship model where volunteers review submitted solutions, offering personalized feedback and guidance.
  • The exercises are well-structured, facilitating both practice and mastery of language-specific concepts and problem-solving skills.
  • Exercism encourages learning through doing, promoting an active learning environment which can be more effective compared to passive learning styles.
  • The platform allows for self-paced learning, enabling users to progress at their own speed and revisit topics as needed.

Recommended for

  • Beginner programmers seeking practical coding exercises to reinforce their learning.
  • Intermediate and advanced developers looking to hone their skills or learn new programming languages.
  • Individuals who appreciate personalized feedback and mentorship to improve their coding practices.
  • Students and educators searching for supplementary resources to support coursework or syllabus requirements.
  • Professionals aiming to practice coding interview problems and enhance their problem-solving abilities.

Exercism videos

Learn with Exercism.io

More videos:

  • Review - JavaScript Exercise | Learn JavaScript with Exercism | #0 Setup
  • Review - exercism.io 01 hello-world

9Proxy videos

Introducing 9Proxy | Premium Residential Proxies - 2024 Commercial

More videos:

  • Tutorial - 9Proxy | How To Set Up 9Proxy
  • Review - Datacenter vs. Residential Proxies: Which One to Choose? | 9Proxy | Premium Residential Proxies

Category Popularity

0-100% (relative to Exercism and 9Proxy)
Online Learning
100 100%
0% 0
Proxy
0 0%
100% 100
Online Education
100 100%
0% 0
Residential Proxies
0 0%
100% 100

Questions & Answers

As answered by people managing Exercism and 9Proxy.

Why should a person choose your product over its competitors?

9Proxy's answer:

Individuals should choose 9Proxy for its extensive pool of over 20 million clean residential proxies, offering high anonymity and secure connections. With competitive pricing starting from just $0.015 per IP and $0.68 per GB, 9Proxy provides a cost-effective solution for various online use cases, ensuring a smooth and dependable user experience.

How would you describe the primary audience of your product?

9Proxy's answer:

9Proxy's primary audience includes SEO professionals, market researchers, and data analysts who require reliable and anonymous internet access for data scraping, SERP analysis, and market research. It also caters to businesses involved in ad tech, multi-accounting, and price aggregation, providing them with the necessary tools to perform their tasks efficiently and securely.

What's the story behind your product?

9Proxy's answer:

We are a group of professionals identifying a gap in the market for reliable, affordable, and anonymous proxy services. We then leverage our expertise in network technology and security to create a solution that addresses these needs, leading to the establishment of 9Proxy. The company has grown by focusing on customer needs, technological advancements, and quality service.

Who are some of the biggest customers of your product?

9Proxy's answer:

Our biggest customers generally include: Digital marketing agencies SEO and SEM professionals Big data analytics firms E-commerce companies Cybersecurity companies Academic and research institutions

What makes your product unique?

9Proxy's answer:

9Proxy stands out with over 20 million clean residential proxies, ensuring high anonymity and security for users. With competitive pricing starting from just $0.015/IP and $0.68/GB, 9Proxy delivers reliable and cost-effective proxy solutions, making it an attractive choice compared to many competitors on the market.

Which are the primary technologies used for building your product?

9Proxy's answer:

9Proxy is built on a scalable cloud-native infrastructure using high-performance proxy routing technology, distributed IP management systems, and secure authentication layers. Our platform leverages modern backend frameworks and real-time traffic optimization to ensure stability, anonymity, and 99.95% uptime.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Exercism and 9Proxy

Exercism Reviews

LeetCode Alternatives: Top platforms for coding practice
What are LeetCode and LeetCode alternatives good for?LeetCode๐Ÿ’กInterested in leveling up your career? Apply to the Formation Fellowship today!ApplyHackerRankCodeSignalAlgoExpertCodewarsGeeksforGeeksEdabitExercismTopCoderShould you use LeetCode for advanced interview prep?Get holistic interview prep with Formation
Source: formation.dev
8 Best LeetCode Alternatives and Similar Platforms
Exercism is the alternative to LeetCode learning platform, with over 4000 activities in up to 52 popular programming languages. It is very different from other comparable programming websites in that it emphasizes solo practice and also mentor-based learning. The greatest part about this software is to have an active developer community that assists novices all around the...
The 10 Most Popular Coding Challenge Websites [Updated for 2021]
Exercism is a coding challenge website that offers 3100+ challenges spanning 52 different programming languages. After picking a language that you'd like to master, you tackle the coding challenges right on your machine (Exercism has their own command line interface that you can download from GitHub).
Top 25 websites for coding challenge and competition [Updated for 2021]
Best qualities: Exercism starts off with language tracks that allow users to choose their preferred languages. Moreover, there are human mentors who will check your code and help you improve as you progress. This makes the platform perfect for total beginners who want to deepen their understanding of a new programming language.

9Proxy Reviews

We have no reviews of 9Proxy yet.
Be the first one to post

Social recommendations and mentions

Based on our record, Exercism seems to be more popular. It has been mentiond 318 times 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.

Exercism mentions (318)

  • AI made me lazy. I didnโ€™t notice until it was too late.
    Exercism.org structured deliberate practice, no AI required. - Source: dev.to / 4 months ago
  • Free Python Resources
    Providing free coding exercises and mentorship, Exercism helps developers practice and improve their programming skills step by step. Their Python Track offers a series of exercises that guide learners from beginner to more advanced levels. - Source: dev.to / 7 months ago
  • Collaboration Circles for Developers (2026)
    Exercism is a code practice + mentoring platform in 74 languages. Why it can work: although it is not exclusively focused on groups of five, its mentoring and peer review model allows forming mini-circles where participants give each other mutual feedback. Limitation: it is not originally intended as a "venting circle" (My favorite), but more technical-practical. - Source: dev.to / 9 months ago
  • Cracking Blackjack with Go: A Step-by-Step Guide to Your First Move
    Keep practicing, keep coding, and most importantlyโ€”have fun with it! If you enjoyed this exercise, explore more challenges on exercism to continue building your Go skills. As always, you can find the complete code in my GitHub repo: https://github.com/RubenOAlvarado/algorithms. - Source: dev.to / 10 months ago
  • Ask HN: What book should my CS1 students read?
    (concepts/topics) : The New Turing Omnibus, 66 Excursions in Computer Science[1] Code Complete [2] Debugging The 9 Indispensable Rules of Finding Even the Most Elusive Software and Hardware Problems [3] Code: The Hidden Language of Computer Hardware and Software [4] -- backround stories on how 'computer' things came to be -------- [1] : https://www.amazon.com/New-Turing-Omnibus-Sixty-Six-Excursions/dp/0805071660... - Source: Hacker News / over 1 year ago
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9Proxy mentions (0)

We have not tracked any mentions of 9Proxy yet. Tracking of 9Proxy recommendations started around Feb 2024.

What are some alternatives?

When comparing Exercism and 9Proxy, you can also consider the following products

Codecademy - Learn the technical skills you need for the job you want. As leaders in online education and learning to code, weโ€™ve taught over 45 million people using a tested curriculum and an interactive learning environment.

Oxylabs - A web intelligence collection platform and premium proxy provider, enabling companies of all sizes to utilize the power of big data.

edX - Best Courses. Top Institutions. Learn anytime, anywhere.

Bright Data - World's largest proxy service with a residential proxy network of 72M IPs worldwide and proxy management interface for zero coding.

Treehouse - Treehouse is an award-winning online platform that teaches people how to code.

IPRoyal - At IPRoyal, we offer premium proxy servers, including residential, datacenter, ISP, and mobile proxies.