MAmatijash·May 8, 2023Submission
A gently curated list of companies using Haskell in industry
5 points · Open discussionerkmos
haskell-companies
OPEN SOURCE2018–2023
erkmos / haskell-companies
haskell-companies
A gently curated list of companies using Haskell in industry
8Distinct people
8Mentions
0Explicit recommenders
1KGitHub stars
What to know before exploring
What it is
A gently curated list of companies using Haskell in industry
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
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Also in these discussions
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year8 dated mentions
Observed mentions: 2018-08-23 16:10:14 UTC to 2023-05-08 20:26:01 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 4 | 1 | 3 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 2 | 2 | 0 |
What Hacker News says
8 sourcesList of companies that use Haskell
5 points · Open discussionAs mentioned on https://github.com/erkmos/haskell-companies, IMVU uses Haskell pretty extensively. Originally the server-side portion of the product was almost entirely PHP3 (with some bits of perl on the backend for things like Memcached) and then over time large portions were rewritten in Haskell (one service is/was Erlang, I think.) Part of the motivation for this was the incredible pain of the forced transition to newer PHP due to all the compatibility breaks.
In Companies That Use Haskell in ProductionThis list actually is longer:
https://github.com/erkmos/haskell-companies
Also, it might be a better list if the companies mainly used haskell. Having Meta or Microsoft doesn't mean all that much as they probably use every language under the sun somewhere.
In Companies That Use Haskell in ProductionHere’s a longer list: https://github.com/erkmos/haskell-companies
Our backend at Lumi (W15) is all Haskell. We’ve been happily building with Haskell since 2016. Lumi is making the world’s factories accessible online. The transactions that occur on Lumi are large and typically non-returnable because all of the products being manufactured are custom, mass-produced items. Haskell helps us in all kinds of ways, including performing safer migrations, and creating DSLs to define specifications of manufacturable products.
https://www.lumi.com
In Companies That Use Haskell in ProductionA List of companies that use Haskell
3 points · Open discussionWell... chances are you've made thousands of phone calls through switches running Erlang. You may have used Emacs, Discord, Facebook, Pinterest, Spotify, Font Awesome, xmonad or visited web sites running Elm or an Elixir backend... or even driven a Volvo.
Here's a list of companies using Haskell, with similar links to other functional languages: https://github.com/erkmos/haskell-companies. It includes names like Facebook, Tesla, Klarna, Target and Kaspersky.
Not to mention the FP paradigms used in Python, C++ and other languages. In fact, if you've never come across FP "in the wild doing something" then I suspect you're living very much off-grid.
In Monads are monoids in the category of endofunctorsI know of this list: https://github.com/erkmos/haskell-companies
In Introduction to Functional Programming in OCaml