
one sec
Freedom.to
Cold Turkey
Forest App
Focus App
AppBlock
RescueTime
Real Focus in Real-Time. Measure and improve your focus day by day, on iPhone, iPad and macOS.

Rust
JavaScript
Python
Java
Clojure
Elixir
NIM
An advanced purely-functional programming language

Which is more popular?
Based on our record, Haskell seems to be more popular. It has been mentioned 21 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | opal.so | haskell.org |
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In their own words, as submitted to SaaSHub.


No description of Opal.so yet.
We recommend LibHunt Haskell for discovery and comparisons of trending Haskell projects.
What each product offers, as listed by its team.


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


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Recommended for
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Functional Programming & Haskell - Computerphile
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Opal.so and Haskell. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Opal.so since May 2025.
Haskell - a general-purpose functional language with many unique properties (purely functional, lazy, expressive types, STM, etc). You mentioned you dabbled in Haskell, why not try it again? (I've written about 7 things I learned from... Source: over 3 years ago
Where you go is entirely up to you. According to haskell.org, Haskell jobs are a-plenty. sigh. Source: over 3 years ago
Should they be part of haskell.org or something else? Source: over 3 years ago
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Lightweight, interpreted, object-oriented language with first-class functions
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Cold Turkey is a free productivity program that you can use to temporarily block distractions so that you can get your work done!
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Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
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